| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Outagamie | Appleton | µg/m³ | 9 | 12 AM | 11.2 | 12 AM |
| Ashland | Bad River | µg/m³ | 6.6 | 01 PM | 9.6 | 11 AM |
| Kenosha | Chiwaukee Prairie | µg/m³ | 7.7 | 08 AM | 10.6 | 01 AM |
| Sauk | Devil's Lake | µg/m³ | 9 | 12 AM | 15.3 | 11 PM |
| Eau Claire | Eau Claire | µg/m³ | 12.8 | 12 AM | 20 | 11 PM |
| Brown | Green Bay - East High | µg/m³ | 8.7 | 05 PM | 12.7 | 02 AM |
| Ozaukee | Harrington Beach | µg/m³ | 9.5 | 09 PM | 21.3 | 01 AM |
| Dodge | Horicon | µg/m³ | 8 | 12 AM | 10.4 | 04 PM |
| Marathon | Lake DuBay | µg/m³ | ||||
| Dane | Madison - East | µg/m³ | 8.5 | 12 AM | 15.4 | 11 PM |
| Dane | Madison - Univ. Ave | µg/m³ | 8.3 | 12 AM | 16 | 10 PM |
| Milwaukee | Milwaukee-16th St. | µg/m³ | 9.8 | 09 PM | 16 | 10 PM |
| Milwaukee | Milwaukee - College Ave NR | µg/m³ | 8.6 | 10 PM | 13.9 | 01 AM |
| Forest | Potawatomi | µg/m³ | 8.5 | 12 AM | 15.7 | 08 PM |
| Grant | Potosi | µg/m³ | 10.6 | 12 AM | 14.6 | 10 AM |
| Waukesha | Waukesha | µg/m³ | 10.1 | 07 PM | 17.9 | 01 AM |