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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 7/23/2025 13:45 to 7/23/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

8-HR Ozone Summary

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Monday, 
County Site Units 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Ashland Bad River Tribal School ppb 19.5 18.4 17.1 15.7 14.5 13.5 12.8 12.3 11.7 11.7 13.1 15.2 17.7 20.4 23.1 25.7 28 28.4 26.2 23.5 21.8 20.4 18.9 17.6
Brown Green Bay UW ppb 17.1 16.4 15.5 15.2 15.6 16.3 16.3 15.4 14.5 14.7 16.1 17.7 19.1 20.6 22.4 24.2 25.1 24.2 22.2 20.9 20 19.1 17.9 16.5
Columbia Columbus ppb 22.3 21.5 21.7 21.8 21.6 21.1 19.9 18.9 18 18 18.4 19.4 21.1 23.2 25.5 27.8 29.5 30.4 30.6 29.9 28.6 26.9 25.3 23.3
Dane Madison East ppb 25 24.9 24.7 24.5 24.4 23.8 22.7 21.8 20.6 20.1 20 20.5 21.6 23 24.9 26.7 28.2 29 28.8 28.2 26.3 23.3 21.1 18.9
Dodge Horicon Wildlife Area ppb 23.5 22.9 22.7 22.5 22.7 22.6 21.6 20.9 20.3 20.1 20.4 21.4 22.7 24.6 26.9 29.2 31 32 32.1 31.7 30.5 29 26.8 24.5
Door Newport Park ppb 16.2 16.3 16.5 17 18 18 17.9 18.1 17.8 17.8 17.6 17.7 18.1 18.8 19.7 20.3 19.9 18.1 16.5 15.1 13.6 11.9 10.6 9.7
Eau Claire Eau Claire DOT Sign Shop ppb 19.1 17 15.4 14.4 13.4 12.8 12.1 12.1 12.4 13.1 14.4 16.4 18.8 21.6 25 28.5 31.4 33.3 33.2 30.7 26.9 22.7 18 13.1
Fond du Lac Fond Du Lac ppb 22 21.6 20.9 20.6 20.8 20.6 19.9 19.2 18.7 18.3 18.8 19.7 20.9 22.5 24.4 26.2 27.6 28.5 28.5 28.5 28.1 26.9 25.7 24.5
Forest Potawatomi ppb 20.7 20.3 19.9 19.5 19.3 18.8 18 17.3 16.9 16.5 16.7 17.4 17.5 18.8 20.5 22.6 24.4 25.1 25 25.2 25.3 24.6 23.8 22.9
Jefferson Jefferson-Laatsch ppb 21.1 20.8 20.9 21.3 21.5 21.3 20.5 19.5 19.1 18.7 19.1 20.5 22.1 24.1 26.3 28.3 29.8 30.5 29.1 27.5 25.9 24.1 22.1 20.2
Kenosha Chiwaukee Prairie ppb 24.5 23 21.7 21 21.1 20.9 20.4 20.1 20.4 21.5 22.9 24.3 25.5 26.9 28.7 30.6 31.9 31.5 28.9 26.8 25.2 23.3 21.3 18.8
Kenosha Kenosha-Water Tower ppb 22.2 20.4 19.8 19.6 19.4 19.4 19.5 19.6 20 21.2 22.2 23.3 24.4 26 27.8 29.7 31 30.5 28.6 26.1 23.6 21 18.4 15.8
Kewaunee Kewaunee ppb 21.5 20.8 19.5 18.5 17.7 17.6 17.8 17.6 16.7 16.7 17.3 18.5 19.8 21.1 22.4 23.9 25.2 25.4 25.5 25 24.3 23.4 22.6 21.6
La Crosse La Crosse DOT ppb 23.6 21.4 19.1 17.3 15 12.7 10.6 9.8 10.2 11.1 12.6 14.3 16.8 20.2 23.9 26.4 28.3 29.7 29.3 28.1 26 23 19.6 16.1
Manitowoc Manitowoc ppb 17.1 16.2 15.6 14.5 14.8 15.1 15.1 14.8 14.6 15 16.2 18.2 20.3 22 24 25.7 27.2 26.8 25 22.4 20.5 19 17.2 15.6
Marathon Lake Dubay ppb 23.5 22.4 20.9 19.4 18 16.6 15.4 14.5 14 14.1 15.1 16.6 18.5 20.9 23.7 26.5 29.2 31.3 32.7 33.2 33.1 32.5 31.6 30.3
Milwaukee Bayside ppb 20.6 20 20.1 20.1 20.1 19.8 20 20 20.2 20.7 21.4 22.5 24 25.7 27.4 29.1 30.5 30.8 29.1 26.5 24.3 22 19.7 17.4
Milwaukee Milwaukee-16th St. Health Center ppb 22.7 22.3 22.3 22.2 21.7 21.1 20.9 20.6 20.5 20.6 21 21.5 22.7 24.6 26.7 28.7 30.2 30.7 29.2 27.1 25.1 23.1 21 19
Outagamie Appleton ppb 17.2 16.5 15.9 16.2 16.8 16.8 14.9 13.6 13.2 13.3 14.2 15.5 17 19.2 22.2 24.6 26.3 26.9 26.2 25.1 24.7 24 23.2 22.1
Ozaukee Grafton ppb 21.8 21.3 21.2 21.1 21 20.6 20.6 20.3 20.6 20.7 21.4 22.5 24 25.6 27.4 29 30.3 30.3 29.2 27.6 26.2 24.7 23.3 21.8
Ozaukee Harrington Beach Park ppb 21.7 20.8 20.3 19.9 19.3 19.2 19.2 19 18.9 19.1 20.1 21.1 22.6 24 25.7 27.3 28.5 29.1 28.6 27.7 26.7 25.4 24 22.5
Racine Racine-Payne & Dolan ppb 25.3 24.1 23.6 23.4 23.3 22.6 21.9 21.2 20.8 21.3 21.8 22.4 23.2 24.7 26.5 28.6 30.7 31.1 30.3 28.5 26.9 25.1 23.3 21.5
Rock Beloit-Converse ppb 21.1 19.9 19.7 19.8 19.5 18.9 18.2 17.7 17.7 17.8 18.5 19.5 21.2 23.3 25.7 27.8 29.2 29.6 27.3 24.7 21.7 18.3 14.7 11
Sauk Devils Lake ppb 23.2 23.5 23.2 22.7 22.2 21.3 20 19 18.6 18.4 18.9 20 21.7 23.7 25.8 27.7 29.1 29.1 28.1 26.2 24.3 22 19.6 17.4
Sheboygan Sheboygan-Haven ppb 21.8 20.9 20.4 20.1 19.9 19.7 19.6 18.9 18.5 18.3 19 20 21.3 22.7 24.7 26.7 28.3 29.1 28.9 28.2 27 25.8 24.4 23
Sheboygan Sheboygan-Kohler Andrae ppb 20 18.5 18.5 18.2 18.3 19.1 19.2 18.9 18.9 19.1 20 21.5 23 24.4 26.4 28.3 30 30.6 29 27.1 25 23.4 21.8 20
Vilas Trout Lake ppb 22.7 21.9 20.6 19.4 18.4 17.4 16.7 16.3 16.1 16.3 17 18.2 19.5 21.3 22.9 24.5 26.2 26.8 26.3 24.5 22.3 19.5 16.6 13.5
Walworth Elkhorn ppb 24 23 22.5 22 22 21.6 21 20.6 20.8 21.2 21.6 22.1 22.9 24.4 26.5 28.5 29.8 29.9 29.2 28.2 26.9 25.7 24.1 22.3
Waukesha Waukesha-Cleveland Ave. ppb 23.8 23.5 23.2 23 22.7 22.2 21.8 21.2 20.7 20.5 20.4 20.9 22.1 23.8 25.9 28 29.7 30.3 29.2 26.6 23.7 21.3 18.3 15.5