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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 8/6/2025 14:30 to 8/6/2025 23:00 for these counties: Kenosha,Milwaukee,Ozaukee,Racine,Sheboygan,Walworth,Washington,Waukesha .

8-HR Ozone Summary

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Wednesday, 
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 22 19.3 16.3 14.2 13 12.9 15.1 18 20.8 22.9 26.3 29.9 33.6 37.2 39.5 41.6 43.4 44.8 45.3 45.6 45 43.3 40.8 37.5
Brown Green Bay UW ppb 37.5 35.7 33.7 31.9 30.5 29.2 28.2 28.2 29 30 31.4 33.1 34.6 36.8 39 40.2 40.3 40.9 41.6 40.9 39.5 36.8 33.2 30.6
Columbia Columbus ppb 41.6 40 38.4 36.9 35.3 33.5 31.8 30.5 29.8 29.5 29.4 30.1 30.4 32.5 35.2 37.6 39.8 41.6 43.2 44.1 43.1 42 39.9 38.1
Dane Madison East ppb 35.7 33.2 30.7 28.7 27.3 27.1 26.9 25 22.8 21.1 20.4 20.4 21.2 22 23.8 26.3 29.3 32.1 34 34.4 33.6 33.2 32.1 30
Dodge Horicon Wildlife Area ppb 40.5 39.6 39.1 38.7 37.8 37.1 36.5 36.3 36.2 36 35.5 35.7 36.9 38.1 38.6 39 39.5 40 40.7 40.9 39.2 37.4 35.2 32.8
Door Newport Park ppb 43.6 43.8 44 44.1 44.1 44 43.6 43.5 43.5 43.4 43.3 43.2 43.7 44.7 46 46.7 46.8 46.5 45.6 45 44.6 43.9 42.1 40.1
Eau Claire Eau Claire DOT Sign Shop ppb 30.1 25.2 20.4 17.3 14 11.4 11.1 11 12 14.1 17.3 19.8 24.2 28.9 31.8 34.3 37.7 40.5 42.1 42.5 40.8 37.7 34 30.2
Fond du Lac Fond Du Lac ppb 42.5 41.8 41.6 41.7 41.4 40.6 40.3 40.2 39.7 39.6 39.6 39.2 39.2 39.8 39.8 39.7 40.3 40.5 40.5 40 38.7 36.9 34.9 33.3
Forest Potawatomi ppb 35.6 34 33.5 33.7 34.5 34.2 33.5 31.8 32 32.7 33 33.2 32.2 32.2 33.8 35.9 35.8 34.8 32.8 29.6 29 28.5 26.9 24.8
Jefferson Jefferson-Laatsch ppb 44.5 42.6 40.3 38.1 36.3 34.6 32.4 30.2 28.5 27.6 27.5 28.1 29.5 31.3 33.4 35.3 37 38.1 38.7 39.5 39.7 37.2 34.1 30
Kenosha Chiwaukee Prairie ppb 38.4 36.9 36.1 35.5 35.9 36.5 37.6 39.1 41.9 44 45.8 47.4 47.8 47.7 47.1 46.8 46.3 45.5 44.6 43 41.3 40.3 39.1 35.9
Kenosha Kenosha-Water Tower ppb 39.4 39.2 38.7 38.4 39 38.9 38 37.9 37.2 38.2 39.4 40.4 40.6 41.6 42.7 42.8 43.1 41.8 40.6 39.8 38.8 38.4 37.4 36.5
Kewaunee Kewaunee ppb 38.7 38.3 37.5 37.1 36.6 36.2 37 38 39 39.6 41.7 42.4 42.6 43.6 44.2 44.2 44 43.6 42.8 41.9 40.4 38.4 36.2 34.3
La Crosse La Crosse DOT ppb 34.7 31.5 28.8 27.1 26 25.9 26.3 27.9 29.5 31.6 33.7 35.5 37 38.9 40.5 41.7 42.9 43.8 44.2 42.7 40.1 37.7 34.9 31.4
Manitowoc Manitowoc ppb 39.1 37.4 34.8 33.3 32.4 32 31.7 32 33.3 35 37.8 39.9 41.9 43.9 45.5 46.2 45.9 45.4 44.1 41.5 37.8 33.2 28.9 25.3
Marathon Lake Dubay ppb 37.2 35.6 33.7 31.2 28.4 25.1 21.9 19.1 18.4 18.8 20.2 21.5 23.8 26.7 30.4 34.2 36.4 36.9 37.4 37.2 36.6 35.9 34.2 32.2
Milwaukee Bayside ppb 32.7 31.3 29.8 28.5 29.2 31.7 34 36.3 37.3 39.5 41.9 44.1 45 45.3 45.8 45.9 45.7 44.8 43.5 41.8 38.2 33.6 28.7 23.6
Milwaukee Milwaukee-16th St. Health Center ppb 34 33 32.6 32.2 32.2 32 31.1 30.1 29.9 31.9 32.8 33.3 33.9 35.4 36.8 37.3 37 36 35.7 35.4 34 32.4 31 28.3
Milwaukee Milwaukee-UWM UPark ppb 37.9 36.6 35.9 35.3 35.5 36.4 37 38.1 39.2 41.1 42.6 43.9 44.7 44.9 45.2 45.1 44.6 43.8 42.8 41.6 39.7 36.1 32.2 27.8
Outagamie Appleton ppb 45.6 45.1 44.9 44.9 45.1 44.7 43.3 42.4 41 38.9 37.1 35.6 35.2 35.6 36.9 37.7 39.1 41.1 42.4 42.5 41.1 38.2 34.4 30.7
Ozaukee Grafton ppb 36.5 35.2 34.9 34.5 33.8 32.8 32.4 32.6 33.7 35.5 36.7 38 39.9 42.5 44.1 44.5 44.6 43.9 42.4 40.2 37 32.7 28.6 24.6
Ozaukee Harrington Beach Park ppb 34.6 32.2 30.5 29.5 28.7 27.6 28 29.9 32.1 34.7 36.8 37.9 40.4 43 43.9 43.4 42.7 41.8 40.8 39.9 38.1 36.2 34.3 32.4
Racine Racine-Payne & Dolan ppb 42.1 42 41.8 41.8 42.3 42.7 43.1 42.9 43.6 44.5 45.2 45.6 45.9 45.7 45.4 45.2 44.5 43.5 42.5 41.3 40 38.6 35.9 33
Rock Beloit-Converse ppb 36.7 34.8 32.9 32.1 33.7 32.3 29.9 28.3 27.5 26.5 26.2 27.2 28.1 29.3 31.1 32.7 33.1 33.7 34.3 34.3 33 30.6 27.2 23.9
Sauk Devils Lake ppb 28.5 25.4 22.6 22.7 23.7 25.1 25.9 27 28.3 30.2 32.7 33.4 34.1 34.4 35.7 37.1 38.3 38.6 36.8 34.5 31.3 27.8 24.2 20.6
Sheboygan Sheboygan-Haven ppb 36.8 34.9 33 31.7 29.9 28.3 28.5 29.8 31.7 33 34.8 36.8 38.6 41.5 42.7 42.6 42.2 42.4 42.1 41.6 40.8 38.8 36.3 34
Sheboygan Sheboygan-Kohler Andrae ppb 36.7 35.9 35.5 35.3 36 36 35.6 35.7 36.5 37.6 38.6 39.6 41 42.4 43.8 44.2 42.9 41.4 39.2 37.1 34.6 31.1 27.9 25.5
Vilas Trout Lake ppb 29.6 25.3 21.3 17.5 14.1 11.6 9.8 10.1 12.2 15.2 19.4 24.1 28.6 33.2 37.6 39.4 40 40 39 36.9 34.9 32.4 30.1 27.8
Walworth Elkhorn ppb 41.5 39.3 36.9 34.8 33.2 31 28.5 25.9 25.1 25.2 26.2 27.6 29.8 31.8 34.2 36.8 38 38.9 39.2 39.4 38.7 37.6 36.1 34.1
Waukesha Waukesha-Cleveland Ave. ppb 41.8 40.5 39.5 38.3 37.5 37.3 35.4 32.8 31.2 30.8 30.6 31.1 30.9 31.1 33.3 35.5 36.8 37.5 37.6 36.9 35.6 34 30.7 27.5