| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Outagamie | Appleton | µg/m³ | 4 | 10 AM | 4.9 | 07 AM |
| Ashland | Bad River Tribal School | µg/m³ | 3.9 | 01 AM | 3.6 | 01 AM |
| Kenosha | Chiwaukee Prairie | µg/m³ | 6.4 | 09 AM | 6.5 | 08 AM |
| Sauk | Devils Lake | µg/m³ | 4.6 | 02 AM | 4.9 | 01 AM |
| Eau Claire | Eau Claire DOT Sign Shop | µg/m³ | 4.7 | 11 PM | 5.9 | 05 PM |
| Brown | Green Bay East High | µg/m³ | 4.9 | 10 AM | 6.7 | 07 AM |
| Ozaukee | Harrington Beach Park | µg/m³ | 4.4 | 11 AM | 4.3 | 01 AM |
| Dodge | Horicon Wildlife Area | µg/m³ | 4.8 | 07 AM | 4.8 | 01 AM |
| Marathon | Lake Dubay | µg/m³ | 4 | 06 AM | 4.8 | 04 AM |
| Dane | Madison East | µg/m³ | 4.8 | 02 AM | 4.1 | 01 AM |
| Dane | Madison University Ave. Well #6 | µg/m³ | 6.9 | 02 AM | 5.3 | 01 AM |
| Milwaukee | Milwaukee-16th St. Health Center | µg/m³ | 6 | 09 AM | 6.3 | 09 AM |
| Milwaukee | Milwaukee-College Ave NR | µg/m³ | 5.7 | 09 AM | 7 | 08 AM |
| Forest | Potawatomi | µg/m³ | 3.3 | 09 AM | 3.5 | 05 AM |
| Grant | Potosi | µg/m³ | 6.5 | 01 AM | 5.4 | 01 AM |
| Waukesha | Waukesha-Cleveland Ave. | µg/m³ | 5 | 09 AM | 5.5 | 09 AM |