| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Outagamie | Appleton | µg/m³ | 19.9 | 06 PM | 21.9 | 01 AM |
| Ashland | Bad River Tribal School | µg/m³ | 8.2 | 12 AM | 9.9 | 11 PM |
| Kenosha | Chiwaukee Prairie | µg/m³ | 19 | 06 PM | 24.4 | 05 AM |
| Sauk | Devils Lake | µg/m³ | 13.3 | 01 AM | 14.8 | 09 AM |
| Eau Claire | Eau Claire DOT Sign Shop | µg/m³ | 14.9 | 01 AM | 15.1 | 11 AM |
| Brown | Green Bay East High | µg/m³ | 20.8 | 06 PM | 25.9 | 07 AM |
| Ozaukee | Harrington Beach Park | µg/m³ | 17.9 | 06 PM | 26.8 | 01 AM |
| Dodge | Horicon Wildlife Area | µg/m³ | 19.7 | 07 PM | 25 | 07 AM |
| Marathon | Lake Dubay | µg/m³ | ||||
| Dane | Madison East | µg/m³ | 29.5 | 01 PM | 37.7 | 01 AM |
| Dane | Madison University Ave. Well #6 | µg/m³ | 18 | 04 AM | 28.5 | 01 AM |
| Milwaukee | Milwaukee-16th St. Health Center | µg/m³ | 29.5 | 06 PM | 46.2 | 03 AM |
| Milwaukee | Milwaukee-College Ave NR | µg/m³ | 25.8 | 07 PM | 46.5 | 03 AM |
| Forest | Potawatomi | µg/m³ | 8.8 | 12 AM | 13.9 | 11 PM |
| Grant | Potosi | µg/m³ | 17.7 | 07 PM | 23.2 | 03 AM |
| Waukesha | Waukesha-Cleveland Ave. | µg/m³ | 37.2 | 06 PM | 58.3 | 04 AM |