| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Outagamie | Appleton | µg/m³ | 10.3 | 12 AM | 11.8 | 09 PM |
| Ashland | Bad River | µg/m³ | 10.9 | 12 AM | 12.2 | 11 AM |
| Kenosha | Chiwaukee Prairie | µg/m³ | 8.8 | 12 AM | 12.5 | 10 PM |
| Sauk | Devil's Lake | µg/m³ | 9.9 | 01 AM | 11.2 | 12 PM |
| Eau Claire | Eau Claire | µg/m³ | 11 | 01 AM | 12.4 | 12 AM |
| Brown | Green Bay - East High | µg/m³ | 11.6 | 11 AM | 13.6 | 10 AM |
| Ozaukee | Harrington Beach | µg/m³ | 8.5 | 12 AM | 11.4 | 11 PM |
| Dodge | Horicon | µg/m³ | 9.9 | 12 AM | 11.4 | 12 AM |
| Marathon | Lake DuBay | µg/m³ | ||||
| Dane | Madison - East | µg/m³ | 9.9 | 01 AM | 10.7 | 11 AM |
| Dane | Madison - Univ. Ave | µg/m³ | 12.5 | 02 AM | 13.1 | 10 PM |
| Milwaukee | Milwaukee-16th St. | µg/m³ | 13.4 | 12 AM | 22.7 | 10 PM |
| Milwaukee | Milwaukee - College Ave NR | µg/m³ | 10.6 | 12 AM | 15.2 | 10 PM |
| Forest | Potawatomi | µg/m³ | 10.6 | 11 PM | 11.9 | 08 AM |
| Grant | Potosi | µg/m³ | 11 | 01 AM | 11.4 | 03 AM |
| Waukesha | Waukesha | µg/m³ | 11.9 | 12 AM | 18.6 | 07 AM |