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]
§ 81.350 - Wisconsin.

Wisconsin—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
AQCR 68:
Grant CountyX
AQCR 73:
Rock CountyX
AQCR 123:
Barron CountyX
Buffalo CountyX
Chippewa CountyX
Clark CountyX
Crawford CountyX
Dunn CountyX
Eau Claire CountyX
Jackson CountyX
LaCrosse CountyX
Monroe CountyX
Pepin CountyX
Pierce CountyX
Polk CountyX
St. Croix CountyX
Trempealeau CountyX
Vernon CountyX
AQCR 129:
Ashland CountyX
Bayfield CountyX
Burnett CountyX
Douglas CountyX
Iron CountyX
Price CountyX
Rusk CountyX
Sawyer CountyX
Taylor CountyX
Washburn CountyX
AQCR 237:
Brown County (city of Green Bay): Subcity area defined as followsX
North: Green Bay
West: W. Mason St. and Ashland Ave., along Ashland north to Matter St., west to Crocker St., north on Crocker St. to Bylsby St., then to Green Bay
South: W. Mason St. and Ashland Ave., east along Mason to Irwin Ave.
East: W. Mason St., and Irwin Ave., along Irwin Ave. north to Green Bay
Remainder of corporate limits of Green BayX
Remainder of Brown CountyX
AQCR 238:
Adams CountyX
Florence CountyX
Forest CountyX
Juneau CountyX
Langlade CountyX
Lincoln CountyX
Marathon CountyX
Oneida CountyX
Portage CountyX
Vilas CountyX
Wood CountyX
AQCR 239:
Kenosha CountyX
Milwaukee CountyX
Ozaukee CountyX
Racine CountyX
Walworth CountyX
Washington CountyX
Waukesha CountyX
AQCR 240:
Columbia CountyX
Dane CountyX
Dodge CountyX
Green CountyX
Iowa CountyX
Jefferson CountyX
Lafayette CountyX
Richland CountyX
Sauk CountyX

Wisconsin—2010 Sulfur Dioxide NAAQS

[Primary]

Designated Area 1 Designation
Date 2 Type
Rhinelander, WI1/12/2022Attainment.
Oneida County (part)
City of Rhinelander, Crescent Town, Newbold Town, Pine Lake Town, and Pelican Town.
Columbia County, WI9/12/2016Attainment/Unclassifiable.
Columbia County
Adams CountyAttainment/Unclassifiable.
Ashland CountyAttainment/Unclassifiable.
Barron CountyAttainment/Unclassifiable.
Bayfield CountyAttainment/Unclassifiable.
Brown CountyAttainment/Unclassifiable.
Buffalo CountyAttainment/Unclassifiable.
Burnett CountyAttainment/Unclassifiable.
Calment CountyAttainment/Unclassifiable.
Chippewa CountyAttainment/Unclassifiable.
Clark CountyAttainment/Unclassifiable.
Crawford CountyAttainment/Unclassifiable.
Dane CountyAttainment/Unclassifiable.
Dodge CountyAttainment/Unclassifiable.
Door CountyAttainment/Unclassifiable.
Douglas CountyAttainment/Unclassifiable.
Dunn CountyAttainment/Unclassifiable.
Eau Claire CountyAttainment/Unclassifiable.
Florence CountyAttainment/Unclassifiable.
Fond du Lac CountyAttainment/Unclassifiable.
Forest CountyAttainment/Unclassifiable.
Grant CountyAttainment/Unclassifiable.
Green CountyAttainment/Unclassifiable.
Green Lake CountyAttainment/Unclassifiable.
Iowa CountyAttainment/Unclassifiable.
Iron CountyAttainment/Unclassifiable.
Jackson CountyAttainment/Unclassifiable.
Jefferson CountyAttainment/Unclassifiable.
Juneau CountyAttainment/Unclassifiable.
Kenosha CountyAttainment/Unclassifiable.
Kewaunee CountyAttainment/Unclassifiable.
La Crosse CountyAttainment/Unclassifiable.
Lafayette CountyAttainment/Unclassifiable.
Langlade CountyAttainment/Unclassifiable.
Lincoln CountyAttainment/Unclassifiable.
Manitowoc CountyAttainment/Unclassifiable.
Marathon CountyAttainment/Unclassifiable.
Marinette CountyAttainment/Unclassifiable.
Marquette CountyAttainment/Unclassifiable.
Menominee CountyAttainment/Unclassifiable.
Milwaukee CountyAttainment/Unclassifiable.
Monroe CountyAttainment/Unclassifiable.
Oconto CountyAttainment/Unclassifiable.
Oneida County (remainder)Attainment/Unclassifiable.
Outagamie County4/30/2021Attainment/Unclassifiable.
Ozaukee CountyAttainment/Unclassifiable.
Pepin CountyAttainment/Unclassifiable.
Pierce CountyAttainment/Unclassifiable.
Polk CountyAttainment/Unclassifiable.
Portage CountyAttainment/Unclassifiable.
Price CountyAttainment/Unclassifiable.
Racine CountyAttainment/Unclassifiable.
Richland CountyAttainment/Unclassifiable.
Rock CountyAttainment/Unclassifiable.
Rusk CountyAttainment/Unclassifiable.
St. Croix CountyAttainment/Unclassifiable.
Sauk CountyAttainment/Unclassifiable.
Sawyer CountyAttainment/Unclassifiable.
Shawano CountyAttainment/Unclassifiable.
Sheboygan CountyAttainment/Unclassifiable.
Taylor CountyAttainment/Unclassifiable.
Trempealeau CountyAttainment/Unclassifiable.
Vernon CountyAttainment/Unclassifiable.
Vilas CountyAttainment/Unclassifiable.
Walworth CountyAttainment/Unclassifiable.
Washburn CountyAttainment/Unclassifiable.
Washington CountyAttainment/Unclassifiable.
Waukesha CountyAttainment/Unclassifiable.
Waupaca CountyAttainment/Unclassifiable.
Waushara CountyAttainment/Unclassifiable.
Winnebago CountyAttainment/Unclassifiable.
Wood CountyAttainment/Unclassifiable.
Forest County Potawatomi Community Indian Tribe 3Attainment/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.

3 Includes Indian country of the tribe listed in this table located in Forest County, Wisconsin. Information pertaining to areas of Indian country in this table is intended for Clean Air Act planning purposes only and is not an EPA determination of Indian country status or any Indian country boundary. EPA lacks the authority to establish Indian country land status, and is making no determination of Indian country boundaries, in this table.

Wisconsin—Carbon Monoxide

Designated Area Designation Classification
Date 1 Type Date 1 Type
Oshkosh Area
Winnebago County (part)
City of Oshkosh1/6/1992Unclassifiable1/6/1992
Adams CountyUnclassifiable/Attainment
Ashland CountyUnclassifiable/Attainment
Barron CountyUnclassifiable/Attainment
Bayfield CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Buffalo CountyUnclassifiable/Attainment
Burnett CountyUnclassifiable/Attainment
Calumet CountyUnclassifiable/Attainment
Chippewa CountyUnclassifiable/Attainment
Clark CountyUnclassifiable/Attainment
Columbia CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Dane CountyUnclassifiable/Attainment
Dodge CountyUnclassifiable/Attainment
Door CountyUnclassifiable/Attainment
Douglas CountyUnclassifiable/Attainment
Dunn CountyUnclassifiable/Attainment
Eau Claire CountyUnclassifiable/Attainment
Florence CountyUnclassifiable/Attainment
Fond du Lac CountyUnclassifiable/Attainment
Forest CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Green CountyUnclassifiable/Attainment
Green Lake CountyUnclassifiable/Attainment
Iowa CountyUnclassifiable/Attainment
Iron CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Juneau CountyUnclassifiable/Attainment
Kenosha CountyUnclassifiable/Attainment
Kewaunee CountyUnclassifiable/Attainment
La Crosse CountyUnclassifiable/Attainment
Lafayette CountyUnclassifiable/Attainment
Langlade CountyUnclassifiable/Attainment
Lincoln CountyUnclassifiable/Attainment
Manitowoc CountyUnclassifiable/Attainment
Marathon CountyUnclassifiable/Attainment
Marinette CountyUnclassifiable/Attainment
Marquette CountyUnclassifiable/Attainment
Menominee CountyUnclassifiable/Attainment
Milwaukee CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Oconto CountyUnclassifiable/Attainment
Oneida CountyUnclassifiable/Attainment
Outagamie CountyUnclassifiable/Attainment
Ozaukee CountyUnclassifiable/Attainment
Pepin CountyUnclassifiable/Attainment
Pierce CountyUnclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
Portage CountyUnclassifiable/Attainment
Price CountyUnclassifiable/Attainment
Racine CountyUnclassifiable/Attainment
Richland CountyUnclassifiable/Attainment
Rock CountyUnclassifiable/Attainment
Rusk CountyUnclassifiable/Attainment
St. Croix CountyUnclassifiable/Attainment
Sauk CountyUnclassifiable/Attainment
Sawyer CountyUnclassifiable/Attainment
Shawano CountyUnclassifiable/Attainment
Sheboygan CountyUnclassifiable/Attainment
Taylor CountyUnclassifiable/Attainment
Trempealeau CountyUnclassifiable/Attainment
Vernon CountyUnclassifiable/Attainment
Vilas CountyUnclassifiable/Attainment
Walworth CountyUnclassifiable/Attainment
Washburn CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Waukesha CountyUnclassifiable/Attainment
Waupaca CountyUnclassifiable/Attainment
Waushara CountyUnclassifiable/Attainment
Winnebago County10/17/1994Unclassifiable/Attainment10/17/1994
Wood CountyUnclassifiable/Attainment

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

Wisconsin—Ozone (1-Hour Standard) 4

Designated area Designation Classification
Date 1 Type Date 1 Type
Door County Area:
Door County6/16/2003Attainment.
Kewaunee County Area:
Kewaunee CountyAttainment
Manitowoc County Area:
Manitowoc County6/16/2003Attainment.
Milwaukee-Racine Area:
Kenosha County11/15/1990Nonattainment11/15/1990Severe-17.
Milwaukee County11/15/1990Nonattainment11/15/1990Severe-17.
Ozaukee County11/15/1990Nonattainment11/15/1990Severe-17.
Racine County11/15/1990Nonattainment11/15/1990Severe-17.
Washington County11/15/1990Nonattainment11/15/1990Severe-17.
Waukesha County11/15/1990Nonattainment11/15/1990Severe-17.
Sheboygan County Area:
Sheboygan CountyAttainment
Walworth County Area:
Walworth CountyAttainment
Adams CountyUnclassifiable/Attainment
Ashland CountyUnclassifiable/Attainment
Barron CountyUnclassifiable/Attainment
Bayfield CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Buffalo CountyUnclassifiable/Attainment
Burnett CountyUnclassifiable/Attainment
Calumet CountyUnclassifiable/Attainment
Chippewa CountyUnclassifiable/Attainment
Clark CountyUnclassifiable/Attainment
Columbia CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Dane CountyUnclassifiable/Attainment
Dodge CountyUnclassifiable/Attainment
Douglas CountyUnclassifiable/Attainment
Dunn CountyUnclassifiable/Attainment
Eau Claire CountyUnclassifiable/Attainment
Florence CountyUnclassifiable/Attainment
Fond du Lac CountyUnclassifiable/Attainment
Forest CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Green CountyUnclassifiable/Attainment
Green Lake CountyUnclassifiable/Attainment
Iowa CountyUnclassifiable/Attainment
Iron CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Juneau CountyUnclassifiable/Attainment
La Crosse CountyUnclassifiable/Attainment
Lafayette CountyUnclassifiable/Attainment
Langlade CountyUnclassifiable/Attainment
Lincoln CountyUnclassifiable/Attainment
Marathon CountyUnclassifiable/Attainment
Marinette CountyUnclassifiable/Attainment
Marquette CountyUnclassifiable/Attainment
Menominee CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Oconto CountyUnclassifiable/Attainment
Oneida CountyUnclassifiable/Attainment
Outagamie CountyUnclassifiable/Attainment
Pepin CountyUnclassifiable/Attainment
Pierce CountyUnclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
Portage CountyUnclassifiable/Attainment
Price CountyUnclassifiable/Attainment
Richland CountyUnclassifiable/Attainment
Rock CountyUnclassifiable/Attainment
Rusk CountyUnclassifiable/Attainment
St. Croix CountyUnclassifiable/Attainment
Sauk CountyUnclassifiable/Attainment
Sawyer CountyUnclassifiable/Attainment
Shawano CountyUnclassifiable/Attainment
Taylor CountyUnclassifiable/Attainment
Trempealeau CountyUnclassifiable/Attainment
Vernon CountyUnclassifiable/Attainment
Vilas CountyUnclassifiable/Attainment
Washburn CountyUnclassifiable/Attainment
Waupaca CountyUnclassifiable/Attainment
Waushara CountyUnclassifiable/Attainment
Winnebago CountyUnclassifiable/Attainment
Wood CountyUnclassifiable/Attainment

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

2 Attainment date temporarily delayed until November 15, 2007.

3 This date is January 16, 2001.

4 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Wisconsin. The Door Co., Kewaunee Co., Manitowoc Co., Sheboygan, and Walworth Co. areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Wisconsin—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date 2 Type
Statewide:
Adams CountyUnclassifiable/Attainment.
Ashland CountyUnclassifiable/Attainment.
Barron CountyUnclassifiable/Attainment.
Bayfield CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Buffalo CountyUnclassifiable/Attainment.
Burnett CountyUnclassifiable/Attainment.
Calumet CountyUnclassifiable/Attainment.
Chippewa CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Dane CountyUnclassifiable/Attainment.
Dodge CountyUnclassifiable/Attainment.
Door CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Dunn CountyUnclassifiable/Attainment.
Eau Claire CountyUnclassifiable/Attainment.
Florence CountyUnclassifiable/Attainment.
Fond du Lac CountyUnclassifiable/Attainment.
Forest CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Green CountyUnclassifiable/Attainment.
Green Lake CountyUnclassifiable/Attainment.
Iowa CountyUnclassifiable/Attainment.
Iron CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Juneau CountyUnclassifiable/Attainment.
Kenosha CountyUnclassifiable/Attainment.
Kewaunee CountyUnclassifiable/Attainment.
La Crosse CountyUnclassifiable/Attainment.
Lafayette CountyUnclassifiable/Attainment.
Langlade CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Manitowoc CountyUnclassifiable/Attainment.
Marathon CountyUnclassifiable/Attainment.
Marinette CountyUnclassifiable/Attainment.
Marquette CountyUnclassifiable/Attainment.
Menominee CountyUnclassifiable/Attainment.
Milwaukee CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Oconto CountyUnclassifiable/Attainment.
Oneida CountyUnclassifiable/Attainment.
Outagamie CountyUnclassifiable/Attainment.
Ozaukee CountyUnclassifiable/Attainment.
Pepin CountyUnclassifiable/Attainment.
Pierce CountyUnclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
Portage CountyUnclassifiable/Attainment.
Price CountyUnclassifiable/Attainment.
Racine CountyUnclassifiable/Attainment.
Richland CountyUnclassifiable/Attainment.
Rock CountyUnclassifiable/Attainment.
Rusk CountyUnclassifiable/Attainment.
St. Croix CountyUnclassifiable/Attainment.
Sauk CountyUnclassifiable/Attainment.
Sawyer CountyUnclassifiable/Attainment.
Shawano CountyUnclassifiable/Attainment.
Sheboygan CountyUnclassifiable/Attainment.
Taylor CountyUnclassifiable/Attainment.
Trempealeau CountyUnclassifiable/Attainment.
Vernon CountyUnclassifiable/Attainment.
Vilas CountyUnclassifiable/Attainment.
Walworth CountyUnclassifiable/Attainment.
Washburn CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Waukesha CountyUnclassifiable/Attainment.
Waupaca CountyUnclassifiable/Attainment.
Waushara CountyUnclassifiable/Attainment.
Winnebago CountyUnclassifiable/Attainment.
Wood 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.

Wisconsin—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Statewide:
Adams CountyUnclassifiable/Attainment
Ashland CountyUnclassifiable/Attainment
Barron CountyUnclassifiable/Attainment
Bayfield CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Buffalo CountyUnclassifiable/Attainment
Burnett CountyUnclassifiable/Attainment
Calumet CountyUnclassifiable/Attainment
Chippewa CountyUnclassifiable/Attainment
Clark CountyUnclassifiable/Attainment
Columbia CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Dane CountyUnclassifiable/Attainment
Dodge CountyUnclassifiable/Attainment
Door CountyUnclassifiable/Attainment
Douglas CountyUnclassifiable/Attainment
Dunn CountyUnclassifiable/Attainment
Eau Claire CountyUnclassifiable/Attainment
Florence CountyUnclassifiable/Attainment
Fond du Lac CountyUnclassifiable/Attainment
Forest CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Green CountyUnclassifiable/Attainment
Green Lake CountyUnclassifiable/Attainment
Iowa CountyUnclassifiable/Attainment
Iron CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Juneau CountyUnclassifiable/Attainment
Kenosha CountyUnclassifiable/Attainment
Kewaunee CountyUnclassifiable/Attainment
La Crosse CountyUnclassifiable/Attainment
Lafayette CountyUnclassifiable/Attainment
Langlade CountyUnclassifiable/Attainment
Lincoln CountyUnclassifiable/Attainment
Manitowoc CountyUnclassifiable/Attainment
Marathon CountyUnclassifiable/Attainment
Marinette CountyUnclassifiable/Attainment
Marquette CountyUnclassifiable/Attainment
Menominee CountyUnclassifiable/Attainment
Milwaukee CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Oconto CountyUnclassifiable/Attainment
Oneida CountyUnclassifiable/Attainment
Outagamie CountyUnclassifiable/Attainment
Ozaukee CountyUnclassifiable/Attainment
Pepin CountyUnclassifiable/Attainment
Pierce CountyUnclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
Portage CountyUnclassifiable/Attainment
Price CountyUnclassifiable/Attainment
Racine CountyUnclassifiable/Attainment
Richland CountyUnclassifiable/Attainment
Rock CountyUnclassifiable/Attainment
Rusk CountyUnclassifiable/Attainment
St. Croix CountyUnclassifiable/Attainment
Sauk CountyUnclassifiable/Attainment
Sawyer CountyUnclassifiable/Attainment
Shawano CountyUnclassifiable/Attainment
Sheboygan CountyUnclassifiable/Attainment
Taylor CountyUnclassifiable/Attainment
Trempealeau CountyUnclassifiable/Attainment
Vernon CountyUnclassifiable/Attainment
Vilas CountyUnclassifiable/Attainment
Walworth CountyUnclassifiable/Attainment
Washburn CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Waukesha CountyUnclassifiable/Attainment
Waupaca CountyUnclassifiable/Attainment
Waushara CountyUnclassifiable/Attainment
Winnebago CountyUnclassifiable/Attainment
Wood 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.

Wisconsin—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date 2 Type
Milwaukee-Racine, WI:
Milwaukee CountyUnclassifiable/Attainment.
Racine CountyUnclassifiable/Attainment.
Waukesha CountyUnclassifiable/Attainment.
Rest of State:
Adams CountyUnclassifiable/Attainment.
Ashland CountyUnclassifiable/Attainment.
Barron CountyUnclassifiable/Attainment.
Bayfield CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Buffalo CountyUnclassifiable/Attainment.
Burnett CountyUnclassifiable/Attainment.
Calumet CountyUnclassifiable/Attainment.
Chippewa CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Dane CountyUnclassifiable/Attainment.
Dodge CountyUnclassifiable/Attainment.
Door CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Dunn CountyUnclassifiable/Attainment.
Eau Claire CountyUnclassifiable/Attainment.
Florence CountyUnclassifiable/Attainment.
Fond du Lac CountyUnclassifiable/Attainment.
Forest CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Green CountyUnclassifiable/Attainment.
Green Lake CountyUnclassifiable/Attainment.
Iowa CountyUnclassifiable/Attainment.
Iron CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Juneau CountyUnclassifiable/Attainment.
Kenosha CountyUnclassifiable/Attainment.
Kewaunee CountyUnclassifiable/Attainment.
La Crosse CountyUnclassifiable/Attainment.
Lafayette CountyUnclassifiable/Attainment.
Langlade CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Manitowoc CountyUnclassifiable/Attainment.
Marathon CountyUnclassifiable/Attainment.
Marinette CountyUnclassifiable/Attainment.
Marquette CountyUnclassifiable/Attainment.
Menominee CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Oconto CountyUnclassifiable/Attainment.
Oneida CountyUnclassifiable/Attainment.
Outagamie CountyUnclassifiable/Attainment.
Ozaukee CountyUnclassifiable/Attainment.
Pepin CountyUnclassifiable/Attainment.
Pierce CountyUnclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
Portage CountyUnclassifiable/Attainment.
Price CountyUnclassifiable/Attainment.
Richland CountyUnclassifiable/Attainment.
Rock CountyUnclassifiable/Attainment.
Rusk CountyUnclassifiable/Attainment.
St. Croix CountyUnclassifiable/Attainment.
Sauk CountyUnclassifiable/Attainment.
Sawyer CountyUnclassifiable/Attainment.
Shawano CountyUnclassifiable/Attainment.
Sheboygan CountyUnclassifiable/Attainment.
Taylor CountyUnclassifiable/Attainment.
Trempealeau CountyUnclassifiable/Attainment.
Vernon CountyUnclassifiable/Attainment.
Vilas CountyUnclassifiable/Attainment.
Walworth CountyUnclassifiable/Attainment.
Washburn CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Waupaca CountyUnclassifiable/Attainment.
Waushara CountyUnclassifiable/Attainment.
Winnebago CountyUnclassifiable/Attainment.
Wood 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.

Wisconsin—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date 2 Type
Milwaukee-Racine, WI:
Milwaukee County4/22/2014Attainment
Racine County4/22/2014Attainment
Waukesha County4/22/2014Attainment
Rest of State:
Adams CountyUnclassifiable/Attainment.
Ashland CountyUnclassifiable/Attainment.
Barron CountyUnclassifiable/Attainment.
Bayfield CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Buffalo CountyUnclassifiable/Attainment.
Burnett CountyUnclassifiable/Attainment.
Calumet CountyUnclassifiable/Attainment.
Chippewa CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Dane CountyUnclassifiable/Attainment.
Dodge CountyUnclassifiable/Attainment.
Door CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Dunn CountyUnclassifiable/Attainment.
Eau Claire CountyUnclassifiable/Attainment.
Florence CountyUnclassifiable/Attainment.
Fond du Lac CountyUnclassifiable/Attainment.
Forest CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Green CountyUnclassifiable/Attainment.
Green Lake CountyUnclassifiable/Attainment.
Iowa CountyUnclassifiable/Attainment.
Iron CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Juneau CountyUnclassifiable/Attainment.
Kenosha CountyUnclassifiable/Attainment.
Kewaunee CountyUnclassifiable/Attainment.
La Crosse CountyUnclassifiable/Attainment.
Lafayette CountyUnclassifiable/Attainment.
Langlade CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Manitowoc CountyUnclassifiable/Attainment.
Marathon CountyUnclassifiable/Attainment.
Marinette CountyUnclassifiable/Attainment.
Marquette CountyUnclassifiable/Attainment.
Menominee CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Oconto CountyUnclassifiable/Attainment.
Oneida CountyUnclassifiable/Attainment.
Outagamie CountyUnclassifiable/Attainment.
Ozaukee CountyUnclassifiable/Attainment.
Pepin CountyUnclassifiable/Attainment.
Pierce CountyUnclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
Portage CountyUnclassifiable/Attainment.
Price CountyUnclassifiable/Attainment.
Richland CountyUnclassifiable/Attainment.
Rock CountyUnclassifiable/Attainment.
Rusk CountyUnclassifiable/Attainment.
St. Croix CountyUnclassifiable/Attainment.
Sauk CountyUnclassifiable/Attainment.
Sawyer CountyUnclassifiable/Attainment.
Shawano CountyUnclassifiable/Attainment.
Sheboygan CountyUnclassifiable/Attainment.
Taylor CountyUnclassifiable/Attainment.
Trempealeau CountyUnclassifiable/Attainment.
Vernon CountyUnclassifiable/Attainment.
Vilas CountyUnclassifiable/Attainment.
Walworth CountyUnclassifiable/Attainment.
Washburn CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Waupaca CountyUnclassifiable/Attainment.
Waushara CountyUnclassifiable/Attainment.
Winnebago CountyUnclassifiable/Attainment.
Wood 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.

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

Wisconsin—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
State of WisconsinX

Wisconsin—NO2 (2010 1-Hour Standard)

Designated area Designation a
Date 1 Type
Adams CountyUnclassifiable/Attainment.
Ashland CountyUnclassifiable/Attainment.
Barron CountyUnclassifiable/Attainment.
Bayfield CountyUnclassifiable/Attainment.
Brown CountyUnclassifiable/Attainment.
Buffalo CountyUnclassifiable/Attainment.
Burnett CountyUnclassifiable/Attainment.
Calumet CountyUnclassifiable/Attainment.
Chippewa CountyUnclassifiable/Attainment.
Clark CountyUnclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Crawford CountyUnclassifiable/Attainment.
Dane CountyUnclassifiable/Attainment.
Dodge CountyUnclassifiable/Attainment.
Door CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Dunn CountyUnclassifiable/Attainment.
Eau Claire CountyUnclassifiable/Attainment.
Florence CountyUnclassifiable/Attainment.
Fond du Lac CountyUnclassifiable/Attainment.
Forest CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Green CountyUnclassifiable/Attainment.
Green Lake CountyUnclassifiable/Attainment.
Iowa CountyUnclassifiable/Attainment.
Iron CountyUnclassifiable/Attainment.
Jackson CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Juneau CountyUnclassifiable/Attainment.
Kenosha CountyUnclassifiable/Attainment.
Kewaunee CountyUnclassifiable/Attainment.
La Crosse CountyUnclassifiable/Attainment.
Lafayette CountyUnclassifiable/Attainment.
Langlade CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Manitowoc CountyUnclassifiable/Attainment.
Marathon CountyUnclassifiable/Attainment.
Marinette CountyUnclassifiable/Attainment.
Marquette CountyUnclassifiable/Attainment.
Menominee CountyUnclassifiable/Attainment.
Milwaukee CountyUnclassifiable/Attainment.
Monroe CountyUnclassifiable/Attainment.
Oconto CountyUnclassifiable/Attainment.
Oneida CountyUnclassifiable/Attainment.
Outagamie CountyUnclassifiable/Attainment.
Ozaukee CountyUnclassifiable/Attainment.
Pepin CountyUnclassifiable/Attainment.
Pierce CountyUnclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
Portage CountyUnclassifiable/Attainment.
Price CountyUnclassifiable/Attainment.
Racine CountyUnclassifiable/Attainment.
Richland CountyUnclassifiable/Attainment.
Rock CountyUnclassifiable/Attainment.
Rusk CountyUnclassifiable/Attainment.
St. Croix CountyUnclassifiable/Attainment.
Sauk CountyUnclassifiable/Attainment.
Sawyer CountyUnclassifiable/Attainment.
Shawano CountyUnclassifiable/Attainment.
Sheboygan CountyUnclassifiable/Attainment.
Taylor CountyUnclassifiable/Attainment.
Trempealeau CountyUnclassifiable/Attainment.
Vernon CountyUnclassifiable/Attainment.
Vilas CountyUnclassifiable/Attainment.
Walworth CountyUnclassifiable/Attainment.
Washburn CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Waukesha CountyUnclassifiable/Attainment.
Waupaca CountyUnclassifiable/Attainment.
Waushara CountyUnclassifiable/Attainment.
Winnebago CountyUnclassifiable/Attainment.
Wood 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.

Wisconsin—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Door County, WI: Door CountyJuly 12, 2010Attainment.
Kewaunee County, WI:
Kewaunee County.5/21/2008Attainment
Manitowoc County, WI:
Manitowoc County, WI: Manitowoc CountyJuly 12, 2010Attainment.
Milwaukee-Racine, WI:
Kenosha County7/31/2012Attainment
Milwaukee County
Ozaukee County
Racine County
Washington County
Waukesha County
Inland Sheboygan County, WI7/15/2019NonattainmentSubpart 2/Moderate.
Sheboygan County (part):
Exclusive and west of the following roadways going from the northern county boundary to the southern county boundary: Highway 43, Wilson Lima Road, Minderhaud Road, County Road KK/Town Line Road, N 10th Street, County Road A S/Center Avenue, Gibbons Road, Hoftiezer Road, Highway 32, Palmer Road/Smies Road/Palmer Road, Amsterdam Road/County Road RR, Termaat Road
Shoreline Sheboygan County, WI7/15/2019NonattainmentSubpart 2/Moderate.
Sheboygan County (part):
Inclusive and east of the following roadways going from the northern county boundary to the southern county boundary: Highway 43, Wilson Lima Road, Minderhaud Road, County Road KK/Town Line Road, N 10th Street, County Road A S/Center Avenue, Gibbons Road, Hoftiezer Road, Highway 32, Palmer Road/Smies Road/Palmer Road, Amsterdam Road/County Road RR, Termaat Road
Rest of State:
Adams CountyUnclassifiable/Attainment
Ashland CountyUnclassifiable/Attainment
Barron CountyUnclassifiable/Attainment
Bayfield CountyUnclassifiable/Attainment
Brown CountyUnclassifiable/Attainment
Buffalo CountyUnclassifiable/Attainment
Burnett CountyUnclassifiable/Attainment
Calumet CountyUnclassifiable/Attainment
Chippewa CountyUnclassifiable/Attainment
Clark CountyUnclassifiable/Attainment
Columbia CountyUnclassifiable/Attainment
Crawford CountyUnclassifiable/Attainment
Dane CountyUnclassifiable/Attainment
Dodge CountyUnclassifiable/Attainment
Douglas CountyUnclassifiable/Attainment
Dunn CountyUnclassifiable/Attainment
Eau Claire County.Unclassifiable/Attainment
Florence CountyUnclassifiable/Attainment
Fond du Lac CountyUnclassifiable/Attainment
Forest CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Green CountyUnclassifiable/Attainment
Green Lake CountyUnclassifiable/Attainment
Iowa CountyUnclassifiable/Attainment
Iron CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Juneau CountyUnclassifiable/Attainment
La Crosse CountyUnclassifiable/Attainment
Lafayette CountyUnclassifiable/Attainment
Langlade CountyUnclassifiable/Attainment
Lincoln CountyUnclassifiable/Attainment
Marathon CountyUnclassifiable/Attainment
Marinette CountyUnclassifiable/Attainment
Marquette CountyUnclassifiable/Attainment
Menominee CountyUnclassifiable/Attainment
Monroe CountyUnclassifiable/Attainment
Oconto CountyUnclassifiable/Attainment
Oneida CountyUnclassifiable/Attainment
Outagamie CountyUnclassifiable/Attainment
Pepin CountyUnclassifiable/Attainment
Pierce CountyUnclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
Portage CountyUnclassifiable/Attainment
Price CountyUnclassifiable/Attainment
Richland CountyUnclassifiable/Attainment
Rock CountyUnclassifiable/Attainment
Rusk CountyUnclassifiable/Attainment
St. Croix CountyUnclassifiable/Attainment
Sauk CountyUnclassifiable/Attainment
Sawyer CountyUnclassifiable/Attainment
Shawano CountyUnclassifiable/Attainment
Taylor CountyUnclassifiable/Attainment
Trempealeau CountyUnclassifiable/Attainment
Vernon CountyUnclassifiable/Attainment
Vilas CountyUnclassifiable/Attainment
Walworth CountyUnclassifiable/Attainment
Washburn CountyUnclassifiable/Attainment
Waupaca CountyUnclassifiable/Attainment
Waushara CountyUnclassifiable/Attainment
Winnebago CountyUnclassifiable/Attainment
Wood 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.

Wisconsin—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification
Date 1 Type Date 1 Type
Chicago-Naperville, IL-IN-WI: 24/11/2022AttainmentSerious.
Kenosha County (part): The portion of Kenosha County bounded by the Lake Michigan shoreline on the East, the Kenosha County boundary on the North, the Kenosha County boundary on the South, and the I-94 corridor (including the entire corridor) on the West
Inland Sheboygan County, WI 257/10/2020Attainment
Sheboygan County (part):
Exclusive and west of the following roadways going from the northern county boundary to the southern county boundary: Highway 43, Wilson Lima Road, Minderhaud Road, County Road KK/Town Line Road, N 10th Street, County Road A S/Center Avenue, Gibbons Road, Hoftiezer Road, Highway 32, Palmer Road/Smies Road/Palmer Road, Amsterdam Road/County Road RR, Termaat Road.
Shoreline Sheboygan County, WI 2 57/10/2020Attainment
Sheboygan County (part):
Inclusive and east of the following roadways going from the northern county boundary to the southern county boundary: Highway 43, Wilson Lima Road, Minderhaud Road, County Road KK/Town Line Road, N 10th Street, County Road A S/Center Avenue, Gibbons Road, Hoftiezer Road, Highway 32, Palmer Road/Smies Road/Palmer Road, Amsterdam Road/County Road RR, Termaat Road.
Adams County 3Unclassifiable/Attainment
Ashland County 3Unclassifiable/Attainment
Barron County 3Unclassifiable/Attainment
Bayfield County 3Unclassifiable/Attainment
Brown County 3Unclassifiable/Attainment
Buffalo County 3Unclassifiable/Attainment
Burnett County 3Unclassifiable/Attainment
Calumet County 3Unclassifiable/Attainment
Chippewa County 3Unclassifiable/Attainment
Clark County 3Unclassifiable/Attainment
Columbia County 3Unclassifiable/Attainment
Crawford County 3Unclassifiable/Attainment
Dane County 3Unclassifiable/Attainment
Dodge County 3Unclassifiable/Attainment
Door County 3Unclassifiable/Attainment
Douglas County 3Unclassifiable/Attainment
Dunn County 3Unclassifiable/Attainment
Eau Claire County 3Unclassifiable/Attainment
Florence County 3Unclassifiable/Attainment
Fond du Lac County 3Unclassifiable/Attainment
Forest County 3Unclassifiable/Attainment
Grant County 3Unclassifiable/Attainment
Green County 3Unclassifiable/Attainment
Green Lake County 3Unclassifiable/Attainment
Iowa County 3Unclassifiable/Attainment
Iron County 3Unclassifiable/Attainment
Jackson County 3Unclassifiable/Attainment
Jefferson County 3Unclassifiable/Attainment
Juneau County 3Unclassifiable/Attainment
Kenosha County (remainder) 3Unclassifiable/Attainment
Kewaunee County 3Unclassifiable/Attainment
La Crosse County 3Unclassifiable/Attainment
Lafayette County 3Unclassifiable/Attainment
Langlade County 3Unclassifiable/Attainment
Lincoln County 3Unclassifiable/Attainment
Manitowoc County 3Unclassifiable/Attainment
Marathon County 3Unclassifiable/Attainment
Marinette County 3Unclassifiable/Attainment
Marquette County 3Unclassifiable/Attainment
Menominee County 3Unclassifiable/Attainment
Milwaukee County 3Unclassifiable/Attainment
Monroe County 3Unclassifiable/Attainment
Oconto County 3Unclassifiable/Attainment
Oneida County 3Unclassifiable/Attainment
Outagamie County 3Unclassifiable/Attainment
Ozaukee County 3Unclassifiable/Attainment
Pepin County 3Unclassifiable/Attainment
Pierce County 3Unclassifiable/Attainment
Polk County 3Unclassifiable/Attainment
Portage County 3Unclassifiable/Attainment
Price County 3Unclassifiable/Attainment
Racine County 3Unclassifiable/Attainment
Richland County 3Unclassifiable/Attainment
Rock County 3Unclassifiable/Attainment
Rusk County 3Unclassifiable/Attainment
St. Croix County 3Unclassifiable/Attainment
Sauk County 3Unclassifiable/Attainment
Sawyer County 3Unclassifiable/Attainment
Shawano County 3Unclassifiable/Attainment
Taylor County 3Unclassifiable/Attainment
Trempealeau County 3Unclassifiable/Attainment
Vernon County 3Unclassifiable/Attainment
Vilas County 3Unclassifiable/Attainment
Walworth County 3Unclassifiable/Attainment
Washburn County 3Unclassifiable/Attainment
Washington County 3Unclassifiable/Attainment
Waukesha County 3Unclassifiable/Attainment
Waupaca County 3Unclassifiable/Attainment
Waushara County 3Unclassifiable/Attainment
Winnebago County 3Unclassifiable/Attainment
Wood 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.

4 Attainment date is extended to July 20, 2016.

5 Attainment date is extended to July 20, 2019 for both Inland Sheboygan County, WI, and Shoreline Sheboygan County, WI, nonattainment areas.

Wisconsin—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Chicago, IL-IN-WI 5 7/14/2021Nonattainment1/16/2025Serious.
Kenosha County (part):
The portion of Kenosha County bounded by the Lake Michigan shoreline on the East, the Kenosha County boundary on the North, the Kenosha County boundary on the South, and the I-94 corridor (including the entire corridor) on the West.
Door County, WI
Door County (part):6/10/2020AttainmentMarginal (Rural Transport).
Newport State Park Boundary
Door County-Revised (part)4/29/2022AttainmentMarginal (Rural Transport).
The portion of Door County north of Sturgeon Bay Canal excluding Newport State Park.
Manitowoc County, WI3/31/2022AttainmentMarginal (Rural Transport).
Manitowoc County (part):
Inclusive and east of the following roadways with the boundary starting from north to south: County Road B which turns into South State Street to County Road V which turns into Forest Home Drive to South Packer Drive to West Hillcrest Road to Highway 43 to West Custer Street to Dufek Drive which turns into Highway 42
Milwaukee, WI 5 7/14/2021Nonattainment1/16/2025Serious.
Milwaukee County.
Ozaukee County.
Racine County (part):
Inclusive and east of the following roadways going from the northern county boundary to the southern county boundary: Highway 45 to Washington Ave. to South Beaumont Ave.
Washington County (part):
Inclusive and east of the following roadways going from the northern county boundary to the southern county boundary: County H to N Main St/Old US Hwy 45 to WI-60 Trunk E to WI-164 S.
Waukesha County (part):
Going from the western county boundary to the southern county boundary: Inclusive and north of I-94 and inclusive and east of Highway 67.
Sheboygan County, WI 5 7/14/2021Nonattainment1/16/2025Serious.
Sheboygan County (part):
Inclusive and east of the following roadways with the boundary starting from north to south: Union Road which turns into County Road Y which turns into Highland Drive, to Lower Road which turns into Monroe Street, to Broadway/Main Street to Highway 32 which turns into Giddings Avenue to County Road W to County Road KW.
Adams County1/16/2018Attainment/Unclassifiable
Ashland County1/16/2018Attainment/Unclassifiable
Barron County1/16/2018Attainment/Unclassifiable
Bayfield County1/16/2018Attainment/Unclassifiable
Brown CountyAttainment/Unclassifiable
Buffalo County1/16/2018Attainment/Unclassifiable
Burnett County1/16/2018Attainment/Unclassifiable
Calumet CountyAttainment/Unclassifiable
Chippewa County1/16/2018Attainment/Unclassifiable
Clark County1/16/2018Attainment/Unclassifiable
Columbia County1/16/2018Attainment/Unclassifiable
Crawford County1/16/2018Attainment/Unclassifiable
Dane County1/16/2018Attainment/Unclassifiable
Dodge CountyAttainment/Unclassifiable
Door County (part) remainderAttainment/Unclassifiable
Douglas County1/16/2018Attainment/Unclassifiable
Dunn County1/16/2018Attainment/Unclassifiable
Eau Claire County1/16/2018Attainment/Unclassifiable
Florence County1/16/2018Attainment/Unclassifiable
Fond du Lac CountyAttainment/Unclassifiable
Forest County1/16/2018Attainment/Unclassifiable
Grant County1/16/2018Attainment/Unclassifiable
Green County1/16/2018Attainment/Unclassifiable
Green Lake County1/16/2018Attainment/Unclassifiable
Iowa County1/16/2018Attainment/Unclassifiable
Iron County1/16/2018Attainment/Unclassifiable
Jackson County1/16/2018Attainment/Unclassifiable
Jefferson CountyAttainment/Unclassifiable
Juneau County1/16/2018Attainment/Unclassifiable
Kenosha County (part) remainderAttainment/Unclassifiable
Kewaunee CountyAttainment/Unclassifiable
La Crosse County1/16/2018Attainment/Unclassifiable
Lafayette County1/16/2018Attainment/Unclassifiable
Langlade County1/16/2018Attainment/Unclassifiable
Lincoln County1/16/2018Attainment/Unclassifiable
Manitowoc County (part) remainderAttainment/Unclassifiable
Marathon County1/16/2018Attainment/Unclassifiable
Marinette County1/16/2018Attainment/Unclassifiable
Marquette County1/16/2018Attainment/Unclassifiable
Menominee County1/16/2018Attainment/Unclassifiable
Milwaukee County (part) remainderAttainment/Unclassifiable
Monroe County1/16/2018Attainment/Unclassifiable
Oconto County1/16/2018Attainment/Unclassifiable
Oneida County1/16/2018Attainment/Unclassifiable
Outagamie County1/16/2018Attainment/Unclassifiable
Ozaukee County (part) remainderAttainment/Unclassifiable
Pepin County1/16/2018Attainment/Unclassifiable
Pierce County1/16/2018Attainment/Unclassifiable
Polk County1/16/2018Attainment/Unclassifiable
Portage County1/16/2018Attainment/Unclassifiable
Price County1/16/2018Attainment/Unclassifiable
Racine County (part) remainderAttainment/Unclassifiable
Richland County1/16/2018Attainment/Unclassifiable
Rock County1/16/2018Attainment/Unclassifiable
Rusk County1/16/2018Attainment/Unclassifiable
St. Croix County1/16/2018Attainment/Unclassifiable
Sauk County1/16/2018Attainment/Unclassifiable
Sawyer County1/16/2018Attainment/Unclassifiable
Shawano County1/16/2018Attainment/Unclassifiable
Sheboygan County (part) remainderAttainment/Unclassifiable
Taylor County1/16/2018Attainment/Unclassifiable
Trempealeau County1/16/2018Attainment/Unclassifiable
Vernon County1/16/2018Attainment/Unclassifiable
Vilas County1/16/2018Attainment/Unclassifiable
Walworth CountyAttainment/Unclassifiable
Washburn County1/16/2018Attainment/Unclassifiable
Washington County (part) remainderAttainment/Unclassifiable
Waukesha County (part) remainderAttainment/Unclassifiable
Waupaca County1/16/2018Attainment/Unclassifiable
Waushara County1/16/2018Attainment/Unclassifiable
Winnebago County1/16/2018Attainment/Unclassifiable
Wood County1/16/2018Attainment/Unclassifiable
Forest County Potawatomi Community Indian Tribe 31/16/2018Attainment/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 Includes Indian country of the tribe listed in this table located in Forest County, Wisconsin. Information pertaining to areas of Indian country in this table is intended for Clean Air Act planning purposes only and is not an EPA determination of Indian country status or any Indian country boundary. EPA lacks the authority to establish Indian country land status, and is making no determination of Indian country boundaries, in this table.

4 [Reserved]

5 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 associated implementation dates for the overall nonattainment area (e.g., the August 3, 2021 attainment date) remain unchanged regardless of this later designation date.

Wisconsin—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS a
Date 1 Type
Whole 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 § 81.350, 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 81.350
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