SIP Status Reports

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Status of Wisconsin Designated Areas

Wisconsin Areas by NAAQS
As of 11/28/2020

Jump to Wisconsin section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) Ozone-8Hr (2015) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)


Wisconsin CO (1971) Areas    Return to map
 
Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Oshkosh Area; Winnebago County (part); City of Oshkosh Maintenance 01/06/1992 Not Classified         0 / 0  
 
04/07/1994 10/17/1994
59 FR 42168

Wisconsin Lead (1978) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin Lead (2008) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin NO2 (1971) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin Ozone-1Hr (1979) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Door County Area Maintenance (NAAQS revoked) 01/06/1992 Rural Transport (Marginal) 27,785 2017-2019 0.081 Yes 4 / 4  
 
12/31/2002 06/16/2003
68 FR 18883
Kewaunee County Area Maintenance (NAAQS revoked) 01/06/1992 Moderate 20,574 2017-2019 0.084 Yes 21 / 21  
 
05/15/1996 08/26/1996
61 FR 43668
Manitowoc County Area Maintenance (NAAQS revoked) 01/06/1992 Moderate 81,442 2017-2019 0.087 Yes 21 / 21  
 
12/31/2002 06/16/2003
68 FR 18883
Milwaukee-Racine Area Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 1,917,742 2017-2019 0.099 Yes 30 / 29 06/23/2009
74 FR 18641
   
Sheboygan Area Maintenance (NAAQS revoked) 11/15/1990 Moderate 115,507 2017-2019 0.095 Yes 22 / 22  
 
05/15/1996 08/26/1996
61 FR 43668
Walworth Area Maintenance (NAAQS revoked) 01/06/1992 Marginal 102,228 2017-2019 0.082 Yes 3 / 3  
 
12/15/1995 08/26/1996
61 FR 43668

Wisconsin Ozone-8Hr (1997) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Door County Area Maintenance (NAAQS revoked) 06/15/2004 Former Subpart 1 27,785 2017-2019 0.070 Yes 4 / 1 07/12/2010
75 FR 39635
09/11/2009 07/12/2010
75 FR 39635
Kewaunee County Area Maintenance (NAAQS revoked) 06/15/2004 Former Subpart 1 20,574 2017-2019 0.066 Yes 4 / 0  
 
06/12/2007 05/21/2008
73 FR 29436
Manitowoc County Area Maintenance (NAAQS revoked) 06/15/2004 Former Subpart 1 81,442 2017-2019 0.071 Yes 4 / 1 07/12/2010
75 FR 39635
09/11/2009 07/12/2010
75 FR 39635
Milwaukee-Racine Area Maintenance (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 1,917,742 2017-2019 0.075 Yes 53 / 44 03/31/2011
76 FR 11080
09/11/2009 07/31/2012
77 FR 45252
Inland Sheboygan County Nonattainment (NAAQS revoked) 07/15/2019 Subpart 2/Moderate 53,851 2017-2019 0.066 Yes 52 / 42 01/07/2021
85 FR 64046
10/09/2019  
Shoreline Sheboygan County Nonattainment (NAAQS revoked) 07/15/2019 Subpart 2/Moderate 61,656 2017-2019 0.075 Yes 52 / 42 01/07/2021
85 FR 64046
02/11/2020  

Wisconsin Ozone-8Hr (2008) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Chicago-Naperville Nonattainment 07/20/2012 Serious 129,844 2017-2019 0.075 Yes 59 / 46  
 
01/21/2020  
Inland Sheboygan County Maintenance 07/15/2019 Moderate 53,851 2017-2019 0.066 Yes 55 / 52 07/15/2019
84 FR 33699
10/09/2019 07/10/2020
85 FR 41400
Shoreline Sheboygan County Maintenance 07/15/2019 Moderate 61,656 2017-2019 0.075 Yes 55 / 52 07/10/2020
85 FR 41405
02/11/2020 07/10/2020
85 FR 41405

Wisconsin Ozone-8Hr (2015) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Chicago Nonattainment 08/03/2018 Marginal 116,383 2017-2019 0.075 No 3 / 0  
 
   
Door County Maintenance 08/03/2018 Marginal (Rural Transport) 31 2017-2019 0.070 Yes 3 / 0 06/10/2020
85 FR 35377
01/27/2020 06/10/2020
85 FR 35377
Manitowoc County Nonattainment 08/03/2018 Marginal 48,956 2017-2019 0.071 No 3 / 0  
 
   
Northern Milwaukee/Ozaukee Shoreline Nonattainment 08/03/2018 Marginal 69,817 2017-2019 0.071 No 3 / 0  
 
   
Sheboygan County Nonattainment 08/03/2018 Marginal 61,656 2017-2019 0.075 No 3 / 0  
 
   

Wisconsin PM-10 (1987) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin PM-2.5 (1997) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin PM-2.5 (2006) Areas    Return to map
Area designated nonattainment for the 24-hour standard     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
24-Hr
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Milwaukee-Racine Maintenance 12/14/2009 Former Subpart 1 1,533,034 2017-2019 22 Yes 6 / 0 04/22/2014
79 FR 22415
06/05/2012 04/22/2014
79 FR 22415

Wisconsin PM-2.5 (2012) Areas     Return to map Top of page

No designated areas for this pollutant.

Wisconsin SO2 (1971) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual/24-Hr
(ppb)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
AQCR 237: Brown County: Green Bay sub-city area Maintenance 03/03/1978   248,004     /     0 / 0  
 
05/07/1987 02/26/1992
57 FR 3013
AQCR 238: Marathon County: Rothschild Sub-city area, Rib Mountain, Weston Maintenance 11/15/1990   134,064     /     0 / 0  
 
11/17/2000 07/29/2002
67 FR 37328
AQCR 238: Oneida County: Rhinelander Sub-city area Maintenance 11/15/1990   35,996     /     1 / 1  
 
11/15/1999 01/16/2001
65 FR 68901
AQCR 239: Milwaukee County: Milwaukee sub-city area Maintenance 10/10/1980   947,779     /     0 / 0  
 
05/12/1986 07/23/1993
58 FR 29783
AQCR 240: Dane County: Madison sub-city area Maintenance 03/03/1978   488,074     /     0 / 0  
 
12/22/1986 07/23/1993
58 FR 29787

Wisconsin SO2 (2010) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
3 Year
1-⁠Hour
Design Value
(ppb)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Rhinelander Nonattainment 10/04/2013   18,054 2017-2019 36 Yes 6 / 0  
 
   
We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status.

Current and historical design value data can be found on the EPA Air Quality Design Values website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information.

The level of the 1-hour NAAQS for sulfur dioxide is 75 parts per billion (ppb) calculated as the 3-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations.