SIP Status Reports
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Status of Wisconsin Designated Areas
Status of Wisconsin Designated Areas
Wisconsin Areas by NAAQSNOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.
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)
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Wisconsin CO (1971) Areas Return to map |
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| 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 |
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Wisconsin Lead (1978) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Wisconsin Lead (2008) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Wisconsin NO2 (1971) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Wisconsin Ozone-1Hr (1979) Areas Return to map Top of page |
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| 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 |
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| 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 |
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Wisconsin Ozone-8Hr (1997) Areas Return to map Top of page |
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| 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 | 03/31/2011 76 FR 11080 |
10/09/2019 | |
| Shoreline Sheboygan County | Nonattainment (NAAQS revoked) | 07/15/2019 | Subpart 2/Moderate | 61,656 | 2017-2019 | 0.075 | Yes | 52 / 42 | 03/31/2011 76 FR 11080 |
02/11/2020 | |
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Wisconsin Ozone-8Hr (2008) Areas Return to map Top of page |
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| 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 |
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Wisconsin Ozone-8Hr (2015) Areas Return to map Top of page |
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| 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 | |
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| 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 | |
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| Northern Milwaukee/Ozaukee Shoreline | Nonattainment | 08/03/2018 | Marginal | 69,817 | 2017-2019 | 0.071 | No | 3 / 0 | |
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| Sheboygan County | Nonattainment | 08/03/2018 | Marginal | 61,656 | 2017-2019 | 0.075 | No | 3 / 0 | |
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Wisconsin PM-10 (1987) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
Wisconsin PM-2.5 (1997) Areas Return to map Top of page |
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| No designated areas for this pollutant. | |||||||||||
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Wisconsin PM-2.5 (2006) Areas Return to map Area designated nonattainment for the 24-hour standard Top of page |
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| 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 |
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| No designated areas for this pollutant. | |||||||||||
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Wisconsin SO2 (1971) Areas Return to map Top of page |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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Wisconsin SO2 (2010) Areas Return to map Top of page |
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| 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 | |
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| 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. |