Regulations last checked for updates: Feb 06, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 81Subpart C - Subpart C—Section 107 Attainment Status Designations
View all text of Subpart C [§ 81.300 - § 81.356]
§ 81.315 - Indiana.

Indiana—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Dearborn CountyX
Gibson County 1 X
Jefferson County 1 X
Lake CountyX
LaPorte CountyX
Marion CountyX
Porter County:
An area bound on the north by Lake Michigan, on the west by the Lake-Porter County line, on the south by I-80 and 90 and on the east by the LaPorte-Porter County line .....X
The remainder of Porter County......X
Vigo CountyX
Warrick County 1 X
Wayne CountyX
All portions of all other Indiana CountiesX

1 EPA designation replaces State designation.

Indiana-2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation
Date 2 Type
Huntington, IN1/9/2026, 91 FR 911Attainment.
Huntington County (part)
Huntington Township
Indianapolis, IN5/21/2020Attainment.
Marion County (part)
Wayne Township, Center Township, Perry Township
Morgan County, IN9/16/2020Attainment.
Morgan County (part)
Clay Township, Washington Township
Southwest Indiana, IN4/30/2021Attainment.
Daviess County (part)
Veale Township
Pike County (part)
Washington Township
Terre Haute, IN7/8/2019Attainment.
Vigo County
Fayette Township, Harrison Township
Gibson County, IN9/12/2016Attainment/Unclassifiable.
Gibson County
Jefferson County, IN9/12/2016Attainment/Unclassifiable.
Jefferson County (part)
Graham, Lancaster, Madison, Monroe, Republican, Shelby, and Smyrna Townships
LaPorte County, IN9/12/2016Attainment/Unclassifiable
LaPorte County
Posey County, IN9/12/2016Attainment/Unclassifiable.
Posey County (part)
Bethel, Center, Harmony, Lynn, Marrs, Robb, Robinson, and Smith Townships
Spencer County, IN9/12/2016Attainment/Unclassifiable.
Spencer County (part)
Ohio Township north of UTM 4187.580 km northing, and Carter, Clay, Grass, Hammond, Harrison, and Jackson Townships
Adams CountyAttainment/Unclassifiable.
Allen CountyAttainment/Unclassifiable.
Bartholomew CountyAttainment/Unclassifiable.
Benton CountyAttainment/Unclassifiable.
Blackford CountyAttainment/Unclassifiable.
Boone CountyAttainment/Unclassifiable.
Brown CountyAttainment/Unclassifiable.
Carroll CountyAttainment/Unclassifiable.
Cass CountyAttainment/Unclassifiable.
Clark CountyAttainment/Unclassifiable.
Clay CountyAttainment/Unclassifiable.
Clinton CountyAttainment/Unclassifiable.
Crawford CountyAttainment/Unclassifiable.
Daviess County (part) (remainder)Attainment/Unclassifiable.
Dearborn CountyAttainment/Unclassifiable.
Decatur CountyAttainment/Unclassifiable.
DeKalb CountyAttainment/Unclassifiable.
Delaware CountyAttainment/Unclassifiable.
Dubois CountyAttainment/Unclassifiable.
Elkhart CountyAttainment/Unclassifiable.
Fayette CountyAttainment/Unclassifiable.
Floyd CountyAttainment/Unclassifiable.
Fountain CountyAttainment/Unclassifiable.
Franklin CountyAttainment/Unclassifiable.
Fulton CountyAttainment/Unclassifiable.
Grant CountyAttainment/Unclassifiable.
Greene CountyAttainment/Unclassifiable.
Hamilton CountyAttainment/Unclassifiable.
Hancock CountyAttainment/Unclassifiable.
Harrison CountyAttainment/Unclassifiable.
Hendricks CountyAttainment/Unclassifiable.
Henry CountyAttainment/Unclassifiable.
Howard CountyAttainment/Unclassifiable.
Huntington County (part) (remainder)Attainment/Unclassifiable.
Jackson CountyAttainment/Unclassifiable.
Jasper CountyAttainment/Unclassifiable.
Jay CountyAttainment/Unclassifiable.
Jefferson CountyAttainment/Unclassifiable.
Jennings CountyAttainment/Unclassifiable.
Johnson CountyAttainment/Unclassifiable.
Knox CountyAttainment/Unclassifiable.
Kosciusko CountyAttainment/Unclassifiable.
LaGrange CountyAttainment/Unclassifiable.
Lake CountyAttainment/Unclassifiable.
Lawrence CountyAttainment/Unclassifiable.
Madison CountyAttainment/Unclassifiable.
Marion County (part) (remainder)Attainment/Unclassifiable.
Marshall CountyAttainment/Unclassifiable.
Martin CountyAttainment/Unclassifiable.
Miami CountyAttainment/Unclassifiable.
Monroe CountyAttainment/Unclassifiable.
Montgomery CountyAttainment/Unclassifiable.
Morgan County (part) (remainder)Attainment/Unclassifiable.
Newton CountyAttainment/Unclassifiable.
Noble CountyAttainment/Unclassifiable.
Ohio CountyAttainment/Unclassifiable.
Orange CountyAttainment/Unclassifiable.
Owen CountyAttainment/Unclassifiable.
Parke CountyAttainment/Unclassifiable.
Perry CountyAttainment/Unclassifiable.
Pike County (part) (remainder)Attainment/Unclassifiable.
Porter County4/30/2021Attainment/Unclassifiable.
Posey CountyAttainment/Unclassifiable.
Pulaski CountyAttainment/Unclassifiable.
Putnam CountyAttainment/Unclassifiable.
Randolph CountyAttainment/Unclassifiable.
Ripley CountyAttainment/Unclassifiable.
Rush CountyAttainment/Unclassifiable.
St. Joseph CountyAttainment/Unclassifiable.
Scott CountyAttainment/Unclassifiable.
Shelby CountyAttainment/Unclassifiable.
Spencer CountyAttainment/Unclassifiable.
Starke CountyAttainment/Unclassifiable.
Steuben CountyAttainment/Unclassifiable.
Sullivan CountyAttainment/Unclassifiable.
Switzerland CountyAttainment/Unclassifiable.
Tippecanoe CountyAttainment/Unclassifiable.
Tipton CountyAttainment/Unclassifiable.
Union CountyAttainment/Unclassifiable.
Vanderburgh CountyAttainment/Unclassifiable.
Vermillion CountyAttainment/Unclassifiable.
Vigo County (part) (remainder)Attainment/Unclassifiable.
Wabash CountyAttainment/Unclassifiable.
Warren CountyAttainment/Unclassifiable.
Warrick CountyAttainment/Unclassifiable.
Washington CountyAttainment/Unclassifiable.
Wayne CountyAttainment/Unclassifiable.
Wells CountyAttainment/Unclassifiable.
White CountyAttainment/Unclassifiable.
Whitley CountyAttainment/Unclassifiable.

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is April 9, 2018, unless otherwise noted.

Indiana—Carbon Monoxide

Designated Area Designation Classification
Date 1 Type Date 1 Type
East Chicago Area:
Lake County (part)February 18, 2000Attainment
Part of City of East Chicago (area bounded by Columbus Drive on the north, the Indiana Harbor Canal on the west, 148th St. if extended, on the south, and Euclid Ave, on the east.
Indianapolis Area:
Marion County (part)February 18, 2000Attainment
Part of City of Indianapolis (area bounded by 11th St, on the north, Capital on the west, Georgia St. on the south, and Delaware on the east).
Lake County (part):
The remainder of East Chicago and Lake CountyUnclassifiable/Attainment
Marion County (part)
The remainder of Indianapolis and Marion CountyUnclassifiable/Attainment
Adams CountyUnclassifiable/Attainment
Allen CountyUnclassifiable/Attainment
Bartholomew CountyUnclassifiable/Attainment
Benton CountyUnclassifiable/Attainment
Blackford CountyUnclassifiable/Attainment
Boone CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Carroll CountyUnclassifiable/Attainment
Cass CountyUnclassifiable/Attainment
Clark CountyUnclassifiable/Attainment
Clay CountyUnclassifiable/Attainment
Clinton CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Daviess CountyUnclassifiable/Attainment
De Kalb CountyUnclassifiable/Attainment
Dearborn CountyUnclassifiable/Attainment
Decatur CountyUnclassifiable/Attainment
Delaware CountyUnclassifiable/Attainment
Dubois CountyUnclassifiable/Attainment
Elkhart CountyUnclassifiable/Attainment
Fayette CountyUnclassifiable/Attainment
Floyd CountyUnclassifiable/Attainment
Fountain CountyUnclassifiable/Attainment
Franklin CountyUnclassifiable/Attainment
Fulton CountyUnclassifiable/Attainment
Gibson CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Greene CountyUnclassifiable/Attainment
Hamilton CountyUnclassifiable/Attainment
Hancock CountyUnclassifiable/Attainment
Harrison CountyUnclassifiable/Attainment
Hendricks CountyUnclassifiable/Attainment
Henry CountyUnclassifiable/Attainment
Howard CountyUnclassifiable/Attainment
Huntington CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jasper CountyUnclassifiable/Attainment
Jay CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Jennings CountyUnclassifiable/Attainment
Johnson CountyUnclassifiable/Attainment
Knox CountyUnclassifiable/Attainment
Kosciusko CountyUnclassifiable/Attainment
La Porte CountyUnclassifiable/Attainment
Lagrange CountyUnclassifiable/Attainment
Lawrence CountyUnclassifiable/Attainment
Madison CountyUnclassifiable/Attainment
Marshall CountyUnclassifiable/Attainment
Martin CountyUnclassifiable/Attainment
Miami CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Montgomery CountyUnclassifiable/Attainment
Morgan CountyUnclassifiable/Attainment
Newton CountyUnclassifiable/Attainment
Noble CountyUnclassifiable/Attainment
Ohio CountyUnclassifiable/Attainment
Orange CountyUnclassifiable/Attainment
Owen CountyUnclassifiable/Attainment
Parke CountyUnclassifiable/Attainment
Perry CountyUnclassifiable/Attainment
Pike CountyUnclassifiable/Attainment
Porter CountyUnclassifiable/Attainment
Posey CountyUnclassifiable/Attainment
Pulaski CountyUnclassifiable/Attainment
Putnam CountyUnclassifiable/Attainment
Randolph CountyUnclassifiable/Attainment
Ripley CountyUnclassifiable/Attainment
Rush CountyUnclassifiable/Attainment
Scott CountyUnclassifiable/Attainment
Shelby CountyUnclassifiable/Attainment
Spencer CountyUnclassifiable/Attainment
St. Joseph CountyUnclassifiable/Attainment
Starke CountyUnclassifiable/Attainment
Steuben CountyUnclassifiable/Attainment
Sullivan CountyUnclassifiable/Attainment
Switzerland CountyUnclassifiable/Attainment
Tippecanoe CountyUnclassifiable/Attainment
Tipton CountyUnclassifiable/Attainment
Union CountyUnclassifiable/Attainment
Vanderburgh CountyUnclassifiable/Attainment
Vermillion CountyUnclassifiable/Attainment
Vigo CountyUnclassifiable/Attainment
Wabash CountyUnclassifiable/Attainment
Warren CountyUnclassifiable/Attainment
Warrick CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Wayne CountyUnclassifiable/Attainment
Wells CountyUnclassifiable/Attainment
White CountyUnclassifiable/Attainment
Whitley CountyUnclassifiable/Attainment

1 This date is November 15, 1990, unless otherwise noted.

Indiana—Ozone (1-Hour Standard) 2

Designated area Designation Classification
Date 1 Type Date 1 Type
Chicago-Gary-Lake County Area:
Lake County11/15/1990Nonattainment11/15/1990Severe-17
Porter County11/15/1990Nonattainment11/15/1990Severe-17
Evansville Area:
Vanderburgh CountyAttainment
Indianapolis Area:
Marion CountyAttainment
Louisville Area:
Clark County10/23/2001Attainment
Floyd County10/23/2001Attainment
South Bend-Elkhart Area:
Elkhart CountyAttainment
St Joseph CountyAttainment
Allen CountyUnclassifiable/Attainment
Adams CountyUnclassifiable/Attainment
Bartholomew CountyUnclassifiable/Attainment
Benton CountyUnclassifiable/Attainment
Blackford CountyUnclassifiable/Attainment
Boone CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Carroll CountyUnclassifiable/Attainment
Cass CountyUnclassifiable/Attainment
Clay CountyUnclassifiable/Attainment
Clinton CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Daviess CountyUnclassifiable/Attainment
De Kalb CountyUnclassifiable/Attainment
Dearborn CountyUnclassifiable/Attainment
Decatur CountyUnclassifiable/Attainment
Delaware CountyUnclassifiable/Attainment
Dubois CountyUnclassifiable/Attainment
Fayette CountyUnclassifiable/Attainment
Fountain CountyUnclassifiable/Attainment
Franklin CountyUnclassifiable/Attainment
Fulton CountyUnclassifiable/Attainment
Gibson CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Greene CountyUnclassifiable/Attainment
Hamilton CountyUnclassifiable/Attainment
Hancock CountyUnclassifiable/Attainment
Harrison CountyUnclassifiable/Attainment
Hendricks CountyUnclassifiable/Attainment
Henry CountyUnclassifiable/Attainment
Howard CountyUnclassifiable/Attainment
Huntington CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jasper CountyUnclassifiable/Attainment
Jay CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Jennings CountyUnclassifiable/Attainment
Johnson CountyUnclassifiable/Attainment
Knox CountyUnclassifiable/Attainment
Kosciusko CountyUnclassifiable/Attainment
La Porte County11/15/1990Unclassifiable/Attainment11/15/90
Lagrange CountyUnclassifiable/Attainment
Lawrence CountyUnclassifiable/Attainment
Madison CountyUnclassifiable/Attainment
Marshall CountyUnclassifiable/Attainment
Martin CountyUnclassifiable/Attainment
Miami CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Montgomery CountyUnclassifiable/Attainment
Morgan CountyUnclassifiable/Attainment
Newton CountyUnclassifiable/Attainment
Noble CountyUnclassifiable/Attainment
Ohio CountyUnclassifiable/Attainment
Orange CountyUnclassifiable/Attainment
Owen CountyUnclassifiable/Attainment
Parke CountyUnclassifiable/Attainment
Perry CountyUnclassifiable/Attainment
Pike CountyUnclassifiable/Attainment
Posey CountyUnclassifiable/Attainment
Pulaski CountyUnclassifiable/Attainment
Putnam CountyUnclassifiable/Attainment
Randolph CountyUnclassifiable/Attainment
Ripley CountyUnclassifiable/Attainment
Rush CountyUnclassifiable/Attainment
Scott CountyUnclassifiable/Attainment
Shelby CountyUnclassifiable/Attainment
Spencer CountyUnclassifiable/Attainment
Starke CountyUnclassifiable/Attainment
Steuben CountyUnclassifiable/Attainment
Sullivan CountyUnclassifiable/Attainment
Switzerland CountyUnclassifiable/Attainment
Tippecanoe CountyUnclassifiable/Attainment
Tipton CountyUnclassifiable/Attainment
Union CountyUnclassifiable/Attainment
Vermillion CountyUnclassifiable/Attainment
Vigo CountyUnclassifiable/Attainment
Wabash CountyUnclassifiable/Attainment
Warren CountyUnclassifiable/Attainment
Warrick CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Wayne CountyUnclassifiable/Attainment
Wells CountyUnclassifiable/Attainment
White CountyUnclassifiable/Attainment
Whitley CountyUnclassifiable/Attainment

1 This date is October 18, 2000, unless otherwise noted.

2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Indiana. The Evansville, Indianapolis, Louisville, and South Bend-Elkhart areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Indiana—PM-10

Designated Area Designation Classification
Date Type Date Type
Lake County: Cities of East Chicago, Hammond, Whiting, and Gary03/11/2003Attainment.
Vermillion County: Part of Clinton Township, Unclassifiable including sections 15, 16, 21, 22, 27, 28, 33, and 3410/27/1997Attainment.
Rest of State11/15/1990Unclassifiable.

Indiana—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date 2 Type
Chicago-Gary-Lake County, IL-IN02/06/2012Attainment.
Lake County
Porter County
Cincinnati-Hamilton, IN:
Dearborn County (part): Lawrenceburg Township9/1/2017Attainment
Elkhart, IN:
Elkhart CountyUnclassifiable/Attainment.
St. Joseph CountyUnclassifiable/Attainment.
Evansville, IN10/27/2011Attainment.
Dubois County
Gibson County (part):
Montgomery Township
Pike County (part):
Washington Township
Spencer County (part):
Ohio Township
Vanderburgh County
Warrick County
Indianapolis, IN7/11/2013Attainment.
Hamilton County
Hendricks County
Johnson County
Marion County
Morgan County
Louisville, KY-IN9/9/2016AttainmentModerate.
Clark County
Floyd County
Jefferson County (part) Madison Township
Muncie, IN:
Delaware CountyUnclassifiable/Attainment.
Rest of State:
Adams CountyUnclassifiable/Attainment.
Allen CountyUnclassifiable/Attainment.
Bartholomew CountyUnclassifiable/Attainment.
Benton CountyUnclassifiable/Attainment.
Blackford CountyUnclassifiable/Attainment.
Boone CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Cass CountyUnclassifiable/Attainment.
Clay CountyUnclassifiable/Attainment.
Clinton CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Daviess CountyUnclassifiable/Attainment.
Dearborn County (remainder)Unclassifiable/Attainment.
Decatur CountyUnclassifiable/Attainment.
De Kalb CountyUnclassifiable/Attainment.
Fayette CountyUnclassifiable/Attainment.
Fountain CountyUnclassifiable/Attainment.
Franklin CountyUnclassifiable/Attainment.
Fulton CountyUnclassifiable/Attainment.
Gibson County (remainder)Unclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Greene CountyUnclassifiable/Attainment.
Hancock CountyUnclassifiable/Attainment.
Harrison CountyUnclassifiable/Attainment.
Henry CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
Huntington CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jasper CountyUnclassifiable/Attainment.
Jay CountyUnclassifiable/Attainment.
Jefferson County (remainder)Unclassifiable/Attainment.
Jennings CountyUnclassifiable/Attainment.
Knox CountyUnclassifiable/Attainment.
Kosciusko CountyUnclassifiable/Attainment.
LaGrange CountyUnclassifiable/Attainment.
La Porte CountyUnclassifiable/Attainment.
Lawrence CountyUnclassifiable/Attainment.
Madison CountyUnclassifiable/Attainment.
Marshall CountyUnclassifiable/Attainment.
Martin CountyUnclassifiable/Attainment.
Miami CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Montgomery CountyUnclassifiable/Attainment.
Newton CountyUnclassifiable/Attainment.
Noble CountyUnclassifiable/Attainment.
Ohio CountyUnclassifiable/Attainment.
Orange CountyUnclassifiable/Attainment.
Owen CountyUnclassifiable/Attainment.
Parke CountyUnclassifiable/Attainment.
Perry CountyUnclassifiable/Attainment.
Pike County (remainder)Unclassifiable/Attainment.
Posey CountyUnclassifiable/Attainment.
Pulaski CountyUnclassifiable/Attainment.
Putnam CountyUnclassifiable/Attainment.
Randolph CountyUnclassifiable/Attainment.
Ripley CountyUnclassifiable/Attainment.
Rush CountyUnclassifiable/Attainment.
Scott CountyUnclassifiable/Attainment.
Shelby CountyUnclassifiable/Attainment.
Spencer County (remainder)Unclassifiable/Attainment.
Starke CountyUnclassifiable/Attainment.
Steuben CountyUnclassifiable/Attainment.
Sullivan CountyUnclassifiable/Attainment.
Switzerland CountyUnclassifiable/Attainment.
Tippecanoe CountyUnclassifiable/Attainment.
Tipton CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Vermillion CountyUnclassifiable/Attainment.
Vigo CountyUnclassifiable/Attainment.
Wabash CountyUnclassifiable/Attainment.
Warren CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Wayne CountyUnclassifiable/Attainment.
Wells CountyUnclassifiable/Attainment.
White CountyUnclassifiable/Attainment.
Whitley CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

2 This date is July 2, 2014, unless otherwise noted.

Indiana—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Louisville, KY-IN:
Clark County1/28/2019Unclassifiable/Attainment.
Floyd County1/28/2019Unclassifiable/Attainment.
Chicago Area, IL-IN:
Lake County1/28/2019Unclassifiable/Attainment.
Porter County1/28/2019Unclassifiable/Attainment.
Rest of State:
Adams CountyUnclassifiable/Attainment
Allen CountyUnclassifiable/Attainment
Bartholomew CountyUnclassifiable/Attainment
Benton CountyUnclassifiable/Attainment
Blackford CountyUnclassifiable/Attainment
Boone CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Carroll CountyUnclassifiable/Attainment
Cass CountyUnclassifiable/Attainment
Clay CountyUnclassifiable/Attainment
Clinton CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Daviess CountyUnclassifiable/Attainment
DeKalb CountyUnclassifiable/Attainment
Dearborn CountyUnclassifiable/Attainment
Decatur CountyUnclassifiable/Attainment
Delaware CountyUnclassifiable/Attainment
Dubois CountyUnclassifiable/Attainment
Elkhart CountyUnclassifiable/Attainment
Fayette CountyUnclassifiable/Attainment
Fountain CountyUnclassifiable/Attainment
Franklin CountyUnclassifiable/Attainment
Fulton CountyUnclassifiable/Attainment
Gibson CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Greene CountyUnclassifiable/Attainment
Hamilton CountyUnclassifiable/Attainment
Hancock CountyUnclassifiable/Attainment
Harrison CountyUnclassifiable/Attainment
Hendricks CountyUnclassifiable/Attainment
Henry CountyUnclassifiable/Attainment
Howard CountyUnclassifiable/Attainment
Huntington CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jasper CountyUnclassifiable/Attainment
Jay CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Jennings CountyUnclassifiable/Attainment
Johnson CountyUnclassifiable/Attainment
Knox CountyUnclassifiable/Attainment
Kosciusko CountyUnclassifiable/Attainment
LaGrange CountyUnclassifiable/Attainment
La Porte CountyUnclassifiable/Attainment
Lawrence CountyUnclassifiable/Attainment
Madison CountyUnclassifiable/Attainment
Marion CountyUnclassifiable/Attainment
Marshall CountyUnclassifiable/Attainment
Martin CountyUnclassifiable/Attainment
Miami CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Montgomery CountyUnclassifiable/Attainment
Morgan CountyUnclassifiable/Attainment
Newton CountyUnclassifiable/Attainment
Noble CountyUnclassifiable/Attainment
Ohio CountyUnclassifiable/Attainment
Orange CountyUnclassifiable/Attainment
Owen CountyUnclassifiable/Attainment
Parke CountyUnclassifiable/Attainment
Perry CountyUnclassifiable/Attainment
Pike CountyUnclassifiable/Attainment
Posey CountyUnclassifiable/Attainment
Pulaski CountyUnclassifiable/Attainment
Putnam CountyUnclassifiable/Attainment
Randolph CountyUnclassifiable/Attainment
Ripley CountyUnclassifiable/Attainment
Rush CountyUnclassifiable/Attainment
Scott CountyUnclassifiable/Attainment
Shelby CountyUnclassifiable/Attainment
Spencer CountyUnclassifiable/Attainment
St. Joseph CountyUnclassifiable/Attainment
Starke CountyUnclassifiable/Attainment
Steuben CountyUnclassifiable/Attainment
Sullivan CountyUnclassifiable/Attainment
Switzerland CountyUnclassifiable/Attainment
Tippecanoe CountyUnclassifiable/Attainment
Tipton CountyUnclassifiable/Attainment
Union CountyUnclassifiable/Attainment
Vanderburgh CountyUnclassifiable/Attainment
Vermillion CountyUnclassifiable/Attainment
Vigo CountyUnclassifiable/Attainment
Wabash CountyUnclassifiable/Attainment
Warren CountyUnclassifiable/Attainment
Warrick CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Wayne CountyUnclassifiable/Attainment
Wells CountyUnclassifiable/Attainment
White CountyUnclassifiable/Attainment
Whitley CountyUnclassifiable/Attainment

1 Includes areas of Indian country located in each county or area, except as otherwise specified.

2 This date is April 15, 2015, unless otherwise noted.

Indiana—1997 24-Hour PM2.5

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
Statewide:
Adams CountyUnclassifiable/Attainment.
Allen CountyUnclassifiable/Attainment.
Bartholomew CountyUnclassifiable/Attainment.
Benton CountyUnclassifiable/Attainment.
Blackford CountyUnclassifiable/Attainment.
Boone CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Cass CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Clay CountyUnclassifiable/Attainment.
Clinton CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Daviess CountyUnclassifiable/Attainment.
Dearborn CountyUnclassifiable/Attainment.
Decatur CountyUnclassifiable/Attainment.
De Kalb CountyUnclassifiable/Attainment.
Elkhart CountyUnclassifiable/Attainment.
Delaware CountyUnclassifiable/Attainment.
Dubois CountyUnclassifiable/Attainment.
Elkhart CountyUnclassifiable/Attainment.
Fayette CountyUnclassifiable/Attainment.
Floyd CountyUnclassifiable/Attainment.
Fountain CountyUnclassifiable/Attainment.
Franklin CountyUnclassifiable/Attainment.
Fulton CountyUnclassifiable/Attainment.
Gibson CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Greene CountyUnclassifiable/Attainment.
Hamilton CountyUnclassifiable/Attainment.
Hancock CountyUnclassifiable/Attainment.
Harrison CountyUnclassifiable/Attainment.
Hendricks CountyUnclassifiable/Attainment.
Henry CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
Huntington CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jasper CountyUnclassifiable/Attainment.
Jay CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Jennings CountyUnclassifiable/Attainment.
Johnson CountyUnclassifiable/Attainment.
Knox CountyUnclassifiable/Attainment.
Kosciusko CountyUnclassifiable/Attainment.
LaGrange CountyUnclassifiable/Attainment.
La Porte CountyUnclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
Lawrence CountyUnclassifiable/Attainment.
Madison CountyUnclassifiable/Attainment.
Marion CountyUnclassifiable/Attainment.
Marshall CountyUnclassifiable/Attainment.
Martin CountyUnclassifiable/Attainment.
Miami CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Montgomery CountyUnclassifiable/Attainment.
Morgan CountyUnclassifiable/Attainment.
Newton CountyUnclassifiable/Attainment.
Noble CountyUnclassifiable/Attainment.
Ohio CountyUnclassifiable/Attainment.
Orange CountyUnclassifiable/Attainment.
Owen CountyUnclassifiable/Attainment.
Parke CountyUnclassifiable/Attainment.
Perry CountyUnclassifiable/Attainment.
Pike CountyUnclassifiable/Attainment.
Porter CountyUnclassifiable/Attainment.
Posey CountyUnclassifiable/Attainment.
Pulaski CountyUnclassifiable/Attainment.
Putnam CountyUnclassifiable/Attainment.
Randolph CountyUnclassifiable/Attainment.
Ripley CountyUnclassifiable/Attainment.
Rush CountyUnclassifiable/Attainment.
St Joseph CountyUnclassifiable/Attainment.
Scott CountyUnclassifiable/Attainment.
Shelby CountyUnclassifiable/Attainment.
Spencer CountyUnclassifiable/Attainment.
Starke CountyUnclassifiable/Attainment.
Steuben CountyUnclassifiable/Attainment.
Sullivan CountyUnclassifiable/Attainment.
Switzerland CountyUnclassifiable/Attainment.
Tippecanoe CountyUnclassifiable/Attainment.
Tipton CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Vandenberg CountyUnclassifiable/Attainment.
Vermillion CountyUnclassifiable/Attainment.
Vigo CountyUnclassifiable/Attainment.
Wabash CountyUnclassifiable/Attainment.
Warren CountyUnclassifiable/Attainment.
Warrick CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Wayne CountyUnclassifiable/Attainment.
Wells CountyUnclassifiable/Attainment.
White CountyUnclassifiable/Attainment.
Whitley CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Indiana—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
Statewide:
Adams CountyUnclassifiable/Attainment.
Allen CountyUnclassifiable/Attainment.
Bartholomew CountyUnclassifiable/Attainment.
Benton CountyUnclassifiable/Attainment.
Blackford CountyUnclassifiable/Attainment.
Boone CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Cass CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Clay CountyUnclassifiable/Attainment.
Clinton CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Daviess CountyUnclassifiable/Attainment.
Dearborn CountyUnclassifiable/Attainment.
Decatur CountyUnclassifiable/Attainment.
De Kalb CountyUnclassifiable/Attainment.
Elkhart CountyUnclassifiable/Attainment.
Delaware CountyUnclassifiable/Attainment.
Dubois CountyUnclassifiable/Attainment.
Elkhart CountyUnclassifiable/Attainment.
Fayette CountyUnclassifiable/Attainment.
Floyd CountyUnclassifiable/Attainment.
Fountain CountyUnclassifiable/Attainment.
Franklin CountyUnclassifiable/Attainment.
Fulton CountyUnclassifiable/Attainment.
Gibson CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Greene CountyUnclassifiable/Attainment.
Hamilton CountyUnclassifiable/Attainment.
Hancock CountyUnclassifiable/Attainment.
Harrison CountyUnclassifiable/Attainment.
Hendricks CountyUnclassifiable/Attainment.
Henry CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
Huntington CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jasper CountyUnclassifiable/Attainment.
Jay CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Jennings CountyUnclassifiable/Attainment.
Johnson CountyUnclassifiable/Attainment.
Knox CountyUnclassifiable/Attainment.
Kosciusko CountyUnclassifiable/Attainment.
LaGrange CountyUnclassifiable/Attainment.
La Porte CountyUnclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
Lawrence CountyUnclassifiable/Attainment.
Madison CountyUnclassifiable/Attainment.
Marion CountyUnclassifiable/Attainment.
Marshall CountyUnclassifiable/Attainment.
Martin CountyUnclassifiable/Attainment.
Miami CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Montgomery CountyUnclassifiable/Attainment.
Morgan CountyUnclassifiable/Attainment.
Newton CountyUnclassifiable/Attainment.
Noble CountyUnclassifiable/Attainment.
Ohio CountyUnclassifiable/Attainment.
Orange CountyUnclassifiable/Attainment.
Owen CountyUnclassifiable/Attainment.
Parke CountyUnclassifiable/Attainment.
Perry CountyUnclassifiable/Attainment.
Pike CountyUnclassifiable/Attainment.
Porter CountyUnclassifiable/Attainment.
Posey CountyUnclassifiable/Attainment.
Pulaski CountyUnclassifiable/Attainment.
Putnam CountyUnclassifiable/Attainment.
Randolph CountyUnclassifiable/Attainment.
Ripley CountyUnclassifiable/Attainment.
Rush CountyUnclassifiable/Attainment.
St Joseph CountyUnclassifiable/Attainment.
Scott CountyUnclassifiable/Attainment.
Shelby CountyUnclassifiable/Attainment.
Spencer CountyUnclassifiable/Attainment.
Starke CountyUnclassifiable/Attainment.
Steuben CountyUnclassifiable/Attainment.
Sullivan CountyUnclassifiable/Attainment.
Switzerland CountyUnclassifiable/Attainment.
Tippecanoe CountyUnclassifiable/Attainment.
Tipton CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Vandenberg CountyUnclassifiable/Attainment.
Vermillion CountyUnclassifiable/Attainment.
Vigo CountyUnclassifiable/Attainment.
Wabash CountyUnclassifiable/Attainment.
Warren CountyUnclassifiable/Attainment.
Warrick CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Wayne CountyUnclassifiable/Attainment.
Wells CountyUnclassifiable/Attainment.
White CountyUnclassifiable/Attainment.
Whitley CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

Indiana—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
All portions of all Indiana CountiesX

Indiana—NO2

[2010 1-Hour standard]

Designated area Designation a
Date 1 Type
Adams CountyUnclassifiable/Attainment.
Allen CountyUnclassifiable/Attainment.
Bartholomew CountyUnclassifiable/Attainment.
Benton CountyUnclassifiable/Attainment.
Blackford CountyUnclassifiable/Attainment.
Boone CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Cass CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Clay CountyUnclassifiable/Attainment.
Clinton CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Daviess CountyUnclassifiable/Attainment.
Dearborn CountyUnclassifiable/Attainment.
Decatur CountyUnclassifiable/Attainment.
Dekalb CountyUnclassifiable/Attainment.
Delaware CountyUnclassifiable/Attainment.
Dubois CountyUnclassifiable/Attainment.
Elkhart CountyUnclassifiable/Attainment.
Fayette CountyUnclassifiable/Attainment.
Floyd CountyUnclassifiable/Attainment.
Fountain CountyUnclassifiable/Attainment.
Franklin CountyUnclassifiable/Attainment.
Fulton CountyUnclassifiable/Attainment.
Gibson CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Greene CountyUnclassifiable/Attainment.
Hamilton CountyUnclassifiable/Attainment.
Hancock CountyUnclassifiable/Attainment.
Harrison CountyUnclassifiable/Attainment.
Hendricks CountyUnclassifiable/Attainment.
Henry CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
Huntington CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jasper CountyUnclassifiable/Attainment.
Jay CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Jennings CountyUnclassifiable/Attainment.
Johnson CountyUnclassifiable/Attainment.
Knox CountyUnclassifiable/Attainment.
Kosciusko CountyUnclassifiable/Attainment.
Lagrange CountyUnclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
La Porte CountyUnclassifiable/Attainment.
Lawrence CountyUnclassifiable/Attainment.
Madison CountyUnclassifiable/Attainment.
Marion CountyUnclassifiable/Attainment.
Marshall CountyUnclassifiable/Attainment.
Martin CountyUnclassifiable/Attainment.
Miami CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Montgomery CountyUnclassifiable/Attainment.
Morgan CountyUnclassifiable/Attainment.
Newton CountyUnclassifiable/Attainment.
Noble CountyUnclassifiable/Attainment.
Ohio CountyUnclassifiable/Attainment.
Orange CountyUnclassifiable/Attainment.
Owen CountyUnclassifiable/Attainment.
Parke CountyUnclassifiable/Attainment.
Perry CountyUnclassifiable/Attainment.
Pike CountyUnclassifiable/Attainment.
Porter CountyUnclassifiable/Attainment.
Posey CountyUnclassifiable/Attainment.
Pulaski CountyUnclassifiable/Attainment.
Putnam CountyUnclassifiable/Attainment.
Randolph CountyUnclassifiable/Attainment.
Ripley CountyUnclassifiable/Attainment.
Rush CountyUnclassifiable/Attainment.
St. Joseph CountyUnclassifiable/Attainment.
Scott CountyUnclassifiable/Attainment.
Shelby CountyUnclassifiable/Attainment.
Spencer CountyUnclassifiable/Attainment.
Starke CountyUnclassifiable/Attainment.
Steuben CountyUnclassifiable/Attainment.
Sullivan CountyUnclassifiable/Attainment.
Switzerland CountyUnclassifiable/Attainment.
Tippecanoe CountyUnclassifiable/Attainment.
Tipton CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Vanderburgh CountyUnclassifiable/Attainment.
Vermillion CountyUnclassifiable/Attainment.
Vigo CountyUnclassifiable/Attainment.
Wabash CountyUnclassifiable/Attainment.
Warren CountyUnclassifiable/Attainment.
Warrick CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Wayne CountyUnclassifiable/Attainment.
Wells CountyUnclassifiable/Attainment.
White CountyUnclassifiable/Attainment.
Whitley CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after October 31, 2011, unless otherwise noted.

Indiana—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Chicago-Gary-Lake County, IL-IN:
Lake CountyMay 11, 2010Attainment.
Porter County
Cincinnati-Hamilton, OH-KY-IN:
Dearborn County (part)May 11, 2010Attainment
Evansville, IN:
Vanderburgh County1/30/2006Attainment
Warrick County1/30/2006Attainment
Fort Wayne, IN:
Allen County2/12/2007Attainment
Greene Co., IN:
Greene County12/29/2005Attainment
Indianapolis, IN:10/19/2007
Boone CountyAttainment
Hamilton CountyAttainment
Hancock CountyAttainment
Hendricks CountyAttainment
Johnson CountyAttainment
Madison CountyAttainment
Marion CountyAttainment
Morgan CountyAttainment
Shelby CountyAttainment
Jackson Co., IN:
Jackson County12/29/2005Attainment
LaPorte CO., IN:
LaPorte County7/19/2007Attainment.
Louisville, KY-IN:
Clark County.
Floyd County7/19/2007Attainment.
Muncie, IN:
Delaware County1/3/2006Attainment
South Bend-Elkhart, IN:7/19/2007Attainment
Elkhart County.
St. Joseph County.
Terre Haute, IN:
Vigo County2/6/2006Attainment
Rest of State
Adams CountyUnclassifiable/Attainment
Bartholomew CountyUnclassifiable/Attainment
Benton CountyUnclassifiable/Attainment
Blackford CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Carroll CountyUnclassifiable/Attainment
Cass CountyUnclassifiable/Attainment
Clay CountyUnclassifiable/Attainment
Clinton CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Daviess CountyUnclassifiable/Attainment
De Kalb CountyUnclassifiable/Attainment
Dearborn County (part) remainderUnclassifiable/Attainment
Decatur CountyUnclassifiable/Attainment
Dubois CountyUnclassifiable/Attainment
Fayette CountyUnclassifiable/Attainment
Fountain CountyUnclassifiable/Attainment
Franklin CountyUnclassifiable/Attainment
Fulton CountyUnclassifiable/Attainment
Gibson CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Harrison CountyUnclassifiable/Attainment
Henry CountyUnclassifiable/Attainment
Howard CountyUnclassifiable/Attainment
Huntington CountyUnclassifiable/Attainment
Jasper CountyUnclassifiable/Attainment
Jay CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Jennings CountyUnclassifiable/Attainment
Knox CountyUnclassifiable/Attainment
Kosciusko CountyUnclassifiable/Attainment
LaGrange CountyUnclassifiable/Attainment
Lawrence CountyUnclassifiable/Attainment
Marshall CountyUnclassifiable/Attainment
Martin CountyUnclassifiable/Attainment
Miami CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Montgomery CountyUnclassifiable/Attainment
Newton CountyUnclassifiable/Attainment
Noble CountyUnclassifiable/Attainment
Ohio CountyUnclassifiable/Attainment
Orange CountyUnclassifiable/Attainment
Owen CountyUnclassifiable/Attainment
Parke CountyUnclassifiable/Attainment
Perry CountyUnclassifiable/Attainment
Pike CountyUnclassifiable/Attainment
Posey CountyUnclassifiable/Attainment
Pulaski CountyUnclassifiable/Attainment
Putnam CountyUnclassifiable/Attainment
Randolph CountyUnclassifiable/Attainment
Ripley CountyUnclassifiable/Attainment
Rush CountyUnclassifiable/Attainment
Scott CountyUnclassifiable/Attainment
Spencer CountyUnclassifiable/Attainment
Starke CountyUnclassifiable/Attainment
Steuben CountyUnclassifiable/Attainment
Sullivan CountyUnclassifiable/Attainment
Switzerland CountyUnclassifiable/Attainment
Tippecanoe CountyUnclassifiable/Attainment
Tipton CountyUnclassifiable/Attainment
Union CountyUnclassifiable/Attainment
Vermillion CountyUnclassifiable/Attainment
Wabash CountyUnclassifiable/Attainment
Warren CountyUnclassifiable/Attainment
Warrick CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Wayne CountyUnclassifiable/Attainment
Wells CountyUnclassifiable/Attainment
White CountyUnclassifiable/Attainment
Whitley CountyUnclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is June 15, 2004, unless otherwise noted.

2 November 22, 2004.

Indiana—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designation area Designation Classification
Date 1 Type Date 1 Type
Chicago-Naperville, IL-IN-WI 25/20/2022Attainment9/23/2019Serious.
Lake County.
Porter County.
Cincinnati, OH-KY-IN: 2 Dearborn County (part) Lawrenceburg Township4/7/2017Attainment.
Adams County 3Unclassifiable/Attainment
Allen County 3Unclassifiable/Attainment
Bartholomew County 3Unclassifiable/Attainment
Benton County 3Unclassifiable/Attainment
Blackford County 3Unclassifiable/Attainment
Boone County 3Unclassifiable/Attainment
Brown County 3Unclassifiable/Attainment
Carroll County 3Unclassifiable/Attainment
Cass County 3Unclassifiable/Attainment
Clark County 3Unclassifiable/Attainment
Clay County 3Unclassifiable/Attainment
Clinton County 3Unclassifiable/Attainment
Crawford County 3Unclassifiable/Attainment
Daviess County 3Unclassifiable/Attainment
Dearborn County (remainder) 3Unclassifiable/Attainment
Decatur County 3Unclassifiable/Attainment
De Kalb County 3Unclassifiable/Attainment
Delaware County 3Unclassifiable/Attainment
Dubois County 3Unclassifiable/Attainment
Elkhart County 3Unclassifiable/Attainment
Fayette County 3Unclassifiable/Attainment
Floyd County 3Unclassifiable/Attainment
Fountain County 3Unclassifiable/Attainment
Franklin County 3Unclassifiable/Attainment
Fulton County 3Unclassifiable/Attainment
Gibson County 3Unclassifiable/Attainment
Grant County 3Unclassifiable/Attainment
Greene County 3Unclassifiable/Attainment
Hamilton County 3Unclassifiable/Attainment
Hancock County 3Unclassifiable/Attainment
Harrison County 3Unclassifiable/Attainment
Hendricks County 3Unclassifiable/Attainment
Henry County 3Unclassifiable/Attainment
Howard County 3Unclassifiable/Attainment
Huntington County 3Unclassifiable/Attainment
Jackson County 3Unclassifiable/Attainment
Jasper County 3Unclassifiable/Attainment
Jay County 3Unclassifiable/Attainment
Jefferson County 3Unclassifiable/Attainment
Jennings County 3Unclassifiable/Attainment
Johnson County 3Unclassifiable/Attainment
Knox County 3Unclassifiable/Attainment
Kosciusko County 3Unclassifiable/Attainment
LaGrange County 3Unclassifiable/Attainment
La Porte County 3Unclassifiable/Attainment
Lawrence County 3Unclassifiable/Attainment
Madison County 3Unclassifiable/Attainment
Marion County 3Unclassifiable/Attainment
Marshall County 3Unclassifiable/Attainment
Martin County 3Unclassifiable/Attainment
Miami County 3Unclassifiable/Attainment
Monroe County 3Unclassifiable/Attainment
Montgomery County 3Unclassifiable/Attainment
Morgan County 3Unclassifiable/Attainment
Newton County 3Unclassifiable/Attainment
Noble County 3Unclassifiable/Attainment
Ohio County 3Unclassifiable/Attainment
Orange County 3Unclassifiable/Attainment
Owen County 3Unclassifiable/Attainment
Parke County 3Unclassifiable/Attainment
Perry County 3Unclassifiable/Attainment
Pike County 3Unclassifiable/Attainment
Posey County 3Unclassifiable/Attainment
Pulaski County 3Unclassifiable/Attainment
Putnam County 3Unclassifiable/Attainment
Randolph County 3Unclassifiable/Attainment
Ripley County 3Unclassifiable/Attainment
Rush County 3Unclassifiable/Attainment
St Joseph County 3Unclassifiable/Attainment
Scott County 3Unclassifiable/Attainment
Shelby County 3Unclassifiable/Attainment
Spencer County 3Unclassifiable/Attainment
Starke County 3Unclassifiable/Attainment
Steuben County 3Unclassifiable/Attainment
Sullivan County 3Unclassifiable/Attainment
Switzerland County 3Unclassifiable/Attainment
Tippecanoe County 3Unclassifiable/Attainment
Tipton County 3Unclassifiable/Attainment
Union County 3Unclassifiable/Attainment
Vanderburgh County 3Unclassifiable/Attainment
Vermillion County 3Unclassifiable/Attainment
Vigo County 3Unclassifiable/Attainment
Wabash County 3Unclassifiable/Attainment
Warren County 3Unclassifiable/Attainment
Warrick County 3Unclassifiable/Attainment
Washington County 3Unclassifiable/Attainment
Wayne County 3Unclassifiable/Attainment
Wells County 3Unclassifiable/Attainment
White County 3Unclassifiable/Attainment
Whitley County 3Unclassifiable/Attainment

1 This date is July 20, 2012, unless otherwise noted.

2 Excludes Indian country located in each area, unless otherwise noted.

3 Includes any Indian country in each county or area, unless otherwise specified.

Indiana—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Chicago, IL-IN-WI: 3 7/14/2021Nonattainment1/16/2025Serious.
Lake County (part):
Calumet Township, Hobart Township, North Township, Ross Township, and St. John Township.
Porter County (part):
Center Township, Jackson Township, Liberty Township, Pine Township, Portage Township, Union Township, Washington Township, and Westchester Township.
Louisville, KY-INJuly 5, 2022AttainmentMarginal.
Clark County
Floyd County
Adams County1/16/2018Attainment/Unclassifiable
Allen County1/16/2018Attainment/Unclassifiable
Bartholomew County1/16/2018Attainment/Unclassifiable
Benton County1/16/2018Attainment/Unclassifiable
Blackford County1/16/2018Attainment/Unclassifiable
Boone County1/16/2018Attainment/Unclassifiable
Brown County1/16/2018Attainment/Unclassifiable
Carroll County1/16/2018Attainment/Unclassifiable
Cass County1/16/2018Attainment/Unclassifiable
Clay County1/16/2018Attainment/Unclassifiable
Clinton County1/16/2018Attainment/Unclassifiable
Crawford County1/16/2018Attainment/Unclassifiable
Daviess County1/16/2018Attainment/Unclassifiable
Dearborn CountyAttainment/Unclassifiable
Decatur County1/16/2018Attainment/Unclassifiable
DeKalb County1/16/2018Attainment/Unclassifiable
Delaware County1/16/2018Attainment/Unclassifiable
Dubois County1/16/2018Attainment/Unclassifiable
Elkhart CountyAttainment/Unclassifiable
Fayette County1/16/2018Attainment/Unclassifiable
Fountain County1/16/2018Attainment/Unclassifiable
Franklin CountyAttainment/Unclassifiable
Fulton County1/16/2018Attainment/Unclassifiable
Gibson County1/16/2018Attainment/Unclassifiable
Grant County1/16/2018Attainment/Unclassifiable
Greene County1/16/2018Attainment/Unclassifiable
Hamilton County1/16/2018Attainment/Unclassifiable
Hancock County1/16/2018Attainment/Unclassifiable
Harrison CountyAttainment/Unclassifiable
Hendricks County1/16/2018Attainment/Unclassifiable
Henry County1/16/2018Attainment/Unclassifiable
Howard County1/16/2018Attainment/Unclassifiable
Huntington County1/16/2018Attainment/Unclassifiable
Jackson County1/16/2018Attainment/Unclassifiable
Jasper CountyAttainment/Unclassifiable
Jay County1/16/2018Attainment/Unclassifiable
Jefferson CountyAttainment/Unclassifiable
Jennings County1/16/2018Attainment/Unclassifiable
Johnson County1/16/2018Attainment/Unclassifiable
Knox County1/16/2018Attainment/Unclassifiable
Kosciusko County1/16/2018Attainment/Unclassifiable
LaGrange County1/16/2018Attainment/Unclassifiable
Lake County (part) remainderAttainment/Unclassifiable
La Porte CountyAttainment/Unclassifiable
Lawrence County1/16/2018Attainment/Unclassifiable
Madison County1/16/2018Attainment/Unclassifiable
Marion County1/16/2018Attainment/Unclassifiable
Marshall CountyAttainment/Unclassifiable
Martin County1/16/2018Attainment/Unclassifiable
Miami County1/16/2018Attainment/Unclassifiable
Monroe County1/16/2018Attainment/Unclassifiable
Montgomery County1/16/2018Attainment/Unclassifiable
Morgan County1/16/2018Attainment/Unclassifiable
Newton CountyAttainment/Unclassifiable
Noble County1/16/2018Attainment/Unclassifiable
Ohio CountyAttainment/Unclassifiable
Orange County1/16/2018Attainment/Unclassifiable
Owen County1/16/2018Attainment/Unclassifiable
Parke County1/16/2018Attainment/Unclassifiable
Perry County1/16/2018Attainment/Unclassifiable
Pike County1/16/2018Attainment/Unclassifiable
Porter County (part) remainderAttainment/Unclassifiable
Posey County1/16/2018Attainment/Unclassifiable
Pulaski County1/16/2018Attainment/Unclassifiable
Putnam County1/16/2018Attainment/Unclassifiable
Randolph County1/16/2018Attainment/Unclassifiable
Ripley County1/16/2018Attainment/Unclassifiable
Rush County1/16/2018Attainment/Unclassifiable
St. Joseph CountyAttainment/Unclassifiable
Scott CountyAttainment/Unclassifiable
Shelby County1/16/2018Attainment/Unclassifiable
Spencer County1/16/2018Attainment/Unclassifiable
Starke County1/16/2018Attainment/Unclassifiable
Steuben County1/16/2018Attainment/Unclassifiable
Sullivan County1/16/2018Attainment/Unclassifiable
Switzerland County1/16/2018Attainment/Unclassifiable
Tippecanoe County1/16/2018Attainment/Unclassifiable
Tipton County1/16/2018Attainment/Unclassifiable
Union CountyAttainment/Unclassifiable
Vanderburgh County1/16/2018Attainment/Unclassifiable
Vermillion County1/16/2018Attainment/Unclassifiable
Vigo County1/16/2018Attainment/Unclassifiable
Wabash County1/16/2018Attainment/Unclassifiable
Warren County1/16/2018Attainment/Unclassifiable
Warrick County1/16/2018Attainment/Unclassifiable
Washington CountyAttainment/Unclassifiable
Wayne County1/16/2018Attainment/Unclassifiable
Wells County1/16/2018Attainment/Unclassifiable
White County1/16/2018Attainment/Unclassifiable
Whitley County1/16/2018Attainment/Unclassifiable

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is August 3, 2018, unless otherwise noted.

3 EPA revised the nonattainment boundary in response to a court decision, which did not vacate any designations for the 2015 ozone NAAQS, but which remanded the designation for the identified county. Because this additional area is part of a previously designated nonattainment area, the implementation dates for the overall nonattainment area (e.g., the August 3, 2021 attainment date) remain unchanged regardless of this later designation date.

Indiana—1978 Lead NAAQS

Designated area Designation Classification
Date Type Date Type
Marion County (Part)—7/10/2000Attainment
Part of Franklin Township: Thompson Road on the south; Emerson Avenue on the west; Five Points Road on the east; and Troy Avenue on the north.
Marion County (Part)—7/10/2000Attainment
Part of Wayne Township: Rockville Road on the north; Girls School Road on the east; Washington Street on the south; and Bridgeport Road on the west.
Rest of State Not Designated.

Indiana—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS a
Date 1 Type
Muncie, IN
Delaware County (part)May 15, 2020Attainment.
A portion of the City of Muncie, Indiana bounded to the north by West 26th Street/Hines Road, to the east by Cowan Road, to the south by West Fuson Road, and to the west by a line running south from the eastern edge of Victory Temple's driveway to South Hoyt Avenue and then along South Hoyt Avenue
Rest of StateUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[43 FR 8964, Mar. 3, 1978] Editorial Note:For Federal Register citations affecting § 81.315, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.
authority: 42 U.S.C. 7401,
source: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 81.315
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