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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 8/7/2025 12:23 to 8/7/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan,Walworth,Washington,Waukesha .

8-HR Ozone Summary

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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 30.4 30.4 30.6 30.8 31 30.6 29.7 29 28.1 27.2 26.1 25.1 24 23.5 23.3 23.5 23.6 23.7 24 24.3 24 23.3 22.1 20.3
Brown Green Bay UW ppb 33.4 32.3 31.6 30.9 29.8 27.6 25.9 24.2 22.9 21.5 20.5 20.1 20 20.2 20.6 21.5 22.4 23.9 25 25.1 24.9 24.7 23.5 21.6
Columbia Columbus ppb 38.3 37 35.7 35.1 34.5 34.1 33.4 33 32.7 33.6 34.9 35.4 36.5 37.5 38.8 40.1 40.7 40.9 40.6 39.7 38.6 37.2 35 32
Dane Madison East ppb 36.9 35.4 34.2 32.9 33 32.1 31.2 30.2 29.4 29.6 30.9 33.1 34.7 36.4 37.7 38.6 39.4 39.8 39.4 38.6 37.4 36.3 34.6 32.8
Dodge Horicon Wildlife Area ppb 41.7 39 37.9 36.6 35 33.5 32.1 30.8 30.3 30.5 29.5 29 29.8 31.4 32.9 34.5 35.5 36 36.7 36.2 35.3 33.9 32.7 31.1
Door Newport Park ppb 30.9 28.5 26.6 24.7 22.8 21.5 20.1 19.3 19 18.9 19 19 18.7 18.8 19 19.6 20.5 21.5 22.5 22.5 21.6 20.3 18.8 17.1
Eau Claire Eau Claire DOT Sign Shop ppb 29.9 29.6 28.5 26.4 22.8 19.1 15.4
Fond du Lac Fond Du Lac ppb 39.7 38.3 37.8 37.1 35.7 34.2 32.2 30.6 30.1 29 28.1 28.3 29.5 30.8 32.8 34.5 35.8 36.7 36.8 35.6 33.9 32.1 30.1 28.1
Forest Potawatomi ppb 34.6 34.5 33.6 31.9 30.3 29 27.2 25.4 23.7 23.1 23.3 24.4 25.8 26.9 27.5 27.5 28.1 28.2 27.7 26.9 25.9 24.9 24.3 23.8
Jefferson Jefferson-Laatsch ppb 35.9 33.7 33.1 33.4 33 33.2 34 34.5 34.8 35.1 35.2 35 35.6 36.4 37.1 38.3 39.2 40.2 41 41.2 40.6 39.4 37.5 35.4
Kenosha Chiwaukee Prairie ppb 44.2 44.5 44.9 45.4 45.3 44 43.3 42.8 41.6 39.4 36.8 34 34 33.5 33.1 33.5 33.8 33.9 34.1 34.3 33.9 33.3 32.3 31
Kenosha Kenosha-Water Tower ppb 39.2 39 39.3 39.5 39.7 40.3 39.8 39.2 38.4 37.2 35.9 34.3 34 34.5 36.2 38.2 40.2 41.1 40.9 40.8 39.6 37.4 34.3 31.2
Kewaunee Kewaunee ppb 45.8 43.7 41 38.1 35 32.4 29.9 27.9 26.3 24.9 24.3 23.6 23.3 23 22.8 22.8 23.1 23.8 24.7 26.1 27.3 28.2 29.1 29.7
La Crosse La Crosse DOT ppb 36.4 34.4 31.2 29.6 28.2 27.4 26.5 26.3 25.5 25.1 26.4 27.2 27.9 28.7 29.3 29.9 31.4 32.8 33.2 33.3 33.1 32.2 31.6 31.3
Manitowoc Manitowoc ppb 36.8 34.5 32.3 31.2 31.5 31 28.8 26.8 25.2 24 23.2 23 23.3 24 25.1 26.4 27.6 28.7 29.6 30 29.8 29.3 28.4 26.4
Marathon Lake Dubay ppb 32.8 31.8 32.1 32.7 33.3 34.2 34.5 34 32.9 31.8 30.6 29.3 28.1 27.6 27.7 28.2 28.8 29.3 29.6 29.7 29.6 29.3 28.6 27.6
Milwaukee Bayside ppb 36.1 36.6 36.7 35.9 35.6 35.7 36.2 36.5 35.1 32.6 30.7 29.4 28.8 28.7 29 29.5 30.2 30.9 31.2 32.1 32.8 32.7 31.7 30.2
Milwaukee Milwaukee-16th St. Health Center ppb 32.7 32.8 32.8 32.3 32.7 32.2 31.9 32.4 32 29 26.8 27.7 28.1 28.9 30 31.1 32 32 31.8 31.4 31.2 30.6 29.5 28.3
Milwaukee Milwaukee-UWM UPark ppb 38.6 38.6 38.7 38.2 37.3 36.6 36.6 37 36.2 33.6 31.5 29.9 29.3 29.3 29.5 29.9 30.5 31.1 31.6 32.6 33.3 33.5 33.3 32.5
Outagamie Appleton ppb 39.1 36.9 35.3 34.2 32.9 32 30.3 28.3 26.8 25.8 24.7 23.9 23.9 24.7 26.2 27.9 29.1 30 30.8 31.3 31.6 30.7 29.1 27.5
Ozaukee Grafton ppb 39.3 39 37.5 35.8 34.2 33.4 33.1 33.1 31.4 30 29.2 28.7 29.3 30.2 31.2 32.7 33.9 33.6 33.4 33.4 32.9 31.8 30.3 28.2
Ozaukee Harrington Beach Park ppb 40.7 40.1 38.3 36.6 34.8 33.4 32.5 32 29.9 27.8 26.8 26.3 26.4 26.9 27.5 28.2 28.5 29.1 29.7 29.8 29.5 28.9 28.1 26.9
Racine Racine-Payne & Dolan ppb 44.2 43.9 43.9 43.8 43 41.8 40.4 38.9 37 34.6 32 29.9 28.5 27.9 28 28.3 28.9 29.8 30.4 30.4 30.2 29.8 29.4 29.3
Rock Beloit-Converse ppb 32.6 31.7 32 32.4 32.8 32.7 33.4 34.3 35.1 35.6 36.2 36.5 37.3 38.4 40.1 41.8 43.3 44.3 44.9 45.7 45.5 44.4 42.3 39.7
Sauk Devils Lake ppb 33.2 32.7 32.1 30.9 31.1 30.9 30.3 29.9 29.3 29.5 30.8 31.7 32.2 32.5 33 33.2 34.1 35 35.3 34.8 33.7 32.5 30.9 30
Sheboygan Sheboygan-Haven ppb 40.5 38.2 35.9 34.1 32.9 32.4 31.6 30.4 28.4 27.9 27.8 27.7 28.1 28.4 28.8 29.1 30 30.4 30.9 30.9 30.2 29.3 28.4 27.3
Sheboygan Sheboygan-Kohler Andrae ppb 44 42 39.5 37.5 36.2 35 32.7 31.2 28.5 27.1 26.6 26.4 26.4 26.9 27.7 28.3 29.3 30.2 31.2 31.9 32.3 32.2 31.8 31
Vilas Trout Lake ppb 36.9 36.4 34.5 32.5 31.3 29.4 27.1 25.3 23.6 22.6 22.6 23.4 24.2 25.6 26.8 27.7 28.2 29 29.1 28 26.6 25 23.2 21.2
Walworth Elkhorn ppb 32.8 31.8 31.7 33.1 33.7 34.3 35 35.7 36.3 36.7 37 37 37.7 38.9 40.3 41.9 43.8 45.3 45.6 44.7 42.9 40.3 37.4 34.7
Waukesha Waukesha-Cleveland Ave. ppb 34.5 33.7 33.9 34.1 34.4 34.5 34.2 34 34 33 32.3 32.9 33.8 35.1 36.8 39 40.6 41.9 41.5 39.8 38.1 36.3 34 31.7