| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Outagamie | Appleton | µg/m³ | 4.9 | 12 AM | ||
| Ashland | Bad River Tribal School | µg/m³ | 3.8 | 11 PM | 6.4 | 06 PM |
| Kenosha | Chiwaukee Prairie | µg/m³ | 10.2 | 09 AM | 11.9 | 01 AM |
| Sauk | Devils Lake | µg/m³ | 8.4 | 06 AM | 11.7 | 05 AM |
| Eau Claire | Eau Claire DOT Sign Shop | µg/m³ | 8.6 | 12 AM | ||
| Brown | Green Bay East High | µg/m³ | 7.6 | 01 AM | 7.1 | 01 AM |
| Ozaukee | Harrington Beach Park | µg/m³ | 7.6 | 09 AM | 10.3 | 07 AM |
| Dodge | Horicon Wildlife Area | µg/m³ | 7.5 | 07 AM | 10.9 | 06 AM |
| Marathon | Lake Dubay | µg/m³ | 6.4 | 01 AM | 6.1 | 01 AM |
| Dane | Madison East | µg/m³ | 10.7 | 07 AM | 13.8 | 07 AM |
| Dane | Madison University Ave. Well #6 | µg/m³ | 9.9 | 02 AM | 11.9 | 07 AM |
| Milwaukee | Milwaukee-16th St. Health Center | µg/m³ | 10.1 | 09 AM | 13.6 | 08 AM |
| Milwaukee | Milwaukee-College Ave NR | µg/m³ | 10.7 | 10 AM | 12.7 | 08 AM |
| Forest | Potawatomi | µg/m³ | 4 | 01 AM | 4.3 | 12 AM |
| Grant | Potosi | µg/m³ | 15.8 | 08 AM | 25.5 | 07 AM |
| Waukesha | Waukesha-Cleveland Ave. | µg/m³ | 10.6 | 10 AM | 13 | 07 AM |