| County | Site | AQS ID | AQI Level | Pollutant | Occured | AQI |
|---|---|---|---|---|---|---|
| Kenosha | Chiwaukee Prairie | 55 059 0019 | Good | PM2.5 - LC | 01 AM | 50 |
| Dodge | Horicon Wildlife Area | 55 027 0001 | Moderate | OZONE | 07 PM | 59 |
| Grant | Potosi | 55 043 0009 | Moderate | PM2.5 - LC | 08 AM | 55 |
| Waukesha | Waukesha-Cleveland Ave. | 55 133 0027 | Moderate | PM2.5 - LC | 07 AM | 58 |
| Milwaukee | Milwaukee-16th St. Health Center | 55 079 0010 | Moderate | PM2.5 - LC | 01 AM | 56 |
| Milwaukee | Milwaukee-College Ave NR | 55 079 0056 | Moderate | PM2.5 - LC | 01 AM | 52 |
| Dane | Madison East | 55 025 0041 | Good | PM2.5 - LC | 01 AM | 49 |
| Dane | Madison University Ave. Well #6 | 55 025 0047 | Moderate | PM2.5 - LC | 01 AM | 58 |
| Milwaukee | Milwaukee-UWM UPark | 55 079 0068 | Good | NO2 | 07 AM | 9 |
| Oneida | Rhinelander Tower | 55 085 0996 | Good | SULFUR DIOXIDE | 01 PM | 2 |
| Outagamie | Appleton | 55 087 0009 | Moderate | PM2.5 - LC | 03 PM | 55 |
| Ozaukee | Harrington Beach Park | 55 089 0009 | Good | PM2.5 - LC | 02 AM | 40 |
| Eau Claire | Eau Claire DOT Sign Shop | 55 035 0014 | Moderate | PM2.5 - LC | 10 AM | 56 |
| Outagamie | Kaukauna | 55 087 0015 | Good | SULFUR DIOXIDE | 10 AM | 6 |
| Forest | Potawatomi | 55 041 0007 | Moderate | PM2.5 - LC | 09 PM | 52 |
| Ashland | Bad River Tribal School | 55 003 0010 | Moderate | PM2.5 - LC | 12 PM | 51 |
| Sauk | Devils Lake | 55 111 0007 | Moderate | PM2.5 - LC | 01 AM | 52 |
| Brown | Green Bay East High | 55 009 0005 | Moderate | PM2.5 - LC | 03 PM | 54 |