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| County | Category | Site | AQS ID | Pollutant | Occurred | AQI |
|---|---|---|---|---|---|---|
| Outagamie | Good | Appleton | 55 087 0009 | PM2.5 | 04 AM | 5 |
| Ashland | Good | Bad River Tribal School | 55 003 0010 | OZONE | 04 AM | 23 |
| Milwaukee | No Index | Bayside | 55 079 0085 | OZONE | 04 AM | ---- |
| Rock | No Index | Beloit-Converse | 55 105 0030 | OZONE | 04 AM | ---- |
| Kenosha | No Index | Chiwaukee Prairie | 55 059 0019 | OZONE | 04 AM | ---- |
| Columbia | No Index | Columbus | 55 021 0015 | OZONE | 04 AM | ---- |
| Sauk | Good | Devils Lake | 55 111 0007 | PM2.5 | 04 AM | 11 |
| Eau Claire | Good | Eau Claire DOT Sign Shop | 55 035 0014 | PM2.5 | 04 AM | 7 |
| Walworth | No Index | Elkhorn | 55 127 0006 | OZONE | 04 AM | ---- |
| Fond du Lac | No Index | Fond Du Lac | 55 039 0006 | OZONE | 04 AM | ---- |
| Ozaukee | No Index | Grafton | 55 089 0008 | OZONE | 04 AM | ---- |
| Brown | Good | Green Bay East High | 55 009 0005 | PM2.5 | 04 AM | 7 |
| Brown | No Index | Green Bay UW | 55 009 0026 | OZONE | 04 AM | ---- |
| Ozaukee | Good | Harrington Beach Park | 55 089 0009 | PM2.5 | 04 AM | 9 |
| Dodge | Good | Horicon Wildlife Area | 55 027 0001 | OZONE | 04 AM | 22 |
| Jefferson | No Index | Jefferson-Laatsch | 55 055 0009 | OZONE | 04 AM | ---- |
| Kenosha | No Index | Kenosha-Water Tower | 55 059 0025 | OZONE | 04 AM | ---- |
| Kewaunee | No Index | Kewaunee | 55 061 0002 | OZONE | 04 AM | ---- |
| La Crosse | Good | La Crosse DOT | 55 063 0012 | PM2.5 | 04 AM | 9 |
| Marathon | No Index | Lake Dubay | 55 073 0012 | OZONE | 04 AM | ---- |
| Dane | Good | Madison East | 55 025 0041 | PM2.5 | 04 AM | 12 |
| Dane | Good | Madison University Ave. Well #6 | 55 025 0047 | PM2.5 | 04 AM | 12 |
| Manitowoc | No Index | Manitowoc | 55 071 0007 | NO2 | 04 AM | ---- |
| Milwaukee | Good | Milwaukee-16th St. Health Center | 55 079 0010 | PM2.5 | 04 AM | 18 |
| Milwaukee | Good | Milwaukee-College Ave NR | 55 079 0056 | PM2.5 | 04 AM | 16 |
| Milwaukee | No Index | Milwaukee-College Ave P&R | 55 079 0058 | PM2.5 | 04 AM | ---- |
| Milwaukee | Good | Milwaukee-SER DNR HQ | 55 079 0026 | OZONE | 04 AM | 20 |
| Door | No Index | Newport Park | 55 029 0004 | OZONE | 04 AM | ---- |
| Taylor | Good | Perkinstown | 55 119 8001 | PM2.5 | 04 AM | 6 |
| Forest | Good | Potawatomi | 55 041 0007 | OZONE | 04 AM | 27 |
| Grant | Good | Potosi | 55 043 0009 | PM2.5 | 04 AM | 31 |
| Oneida | Good | Rhinelander Tower | 55 085 0996 | SO2 | 04 AM | 0 |
| Sheboygan | No Index | Sheboygan-Haven | 55 117 0009 | OZONE | 04 AM | ---- |
| Sheboygan | No Index | Sheboygan-Kohler Andrae | 55 117 0006 | OZONE | 04 AM | ---- |
| Vilas | Good | Trout Lake | 55 125 0001 | PM2.5 | 04 AM | 3 |
| Waukesha | Good | Waukesha-Cleveland Ave. | 55 133 0027 | PM2.5 | 04 AM | 18 |