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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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Friday, 
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 24.1 19.1 14.3 9.9 6.5 5.3 6.2 8.5 11.9 16.2 20.7 25.5 30.3 34.6 37.6 39.7 41.1 41.9 42.6 42.9 42.1 39.7 36.4 32.5
Brown Green Bay UW ppb 23.8 24.7 25.4 26.2 26.5 27 26.9 27.3 27.7 28 28.9 29.9 31 32.1 33.3 34.1 34.9 35.6 35.3 33.7 31.8 29.9 27.7 25.2
Columbia Columbus ppb 26.2 24.9 22.9 21.4 21.3 21.3 21.9 23.2 24.3 25.2 26.5 27.8 29.4 30.8 32.2 33.4 34.9 36.3 37 37.1 37 36.5 35.5 33.9
Dane Madison East ppb 23.3 19.6 17.7 17.8 18 18.1 18.8 19.7 20.8 21.9 22.9 24.3 25.9 27.6 29.2 31.2 33 34.8 36.2 36.5 35.5 34.6 33.5 31.8
Dodge Horicon Wildlife Area ppb 24.3 22.3 21.5 21.1 21.3 22 23 23.3 23.7 24.2 25 25.6 26.7 28 29.3 31.1 33 34.6 35.8 36.5 36.5 35.4 33.7 31.6
Door Newport Park ppb 22.8 22.1 21.2 20.7 20.1 18.9 18.5 19.9 21.5 23.2 25.2 27.1 29.3 31.8 34 35.3 36 36.1 35.8 34.6 32.3 30.2 27.9 24.5
Eau Claire Eau Claire DOT Sign Shop ppb 16.4 13 9.5 6.6 4.4 2.9 2.8 5.1 9 13.8 19 24 29.3 34.9 39.7 42.8 44.7 46 46.5 45.2 41.9 37.4 32.3 26.9
Fond du Lac Fond Du Lac ppb 23.7 23.1 22.7 22.7 23.2 24.2 25.1 25.7 26.2 26.7 27.2 28.1 29.3 30.4 31.9 33.6 35.2 36.4 37.4 37.5 36.7 35.4 33.8 31.9
Forest Potawatomi ppb 28.6 27.9 27.2 27 26.9 26.6 27 27.7 28.6 29.9 31.3 32.6 33.8 35.1 36.3 37.3 38.1 38.6 38.9 38.6 38.7 38.3 38.1 37.8
Jefferson Jefferson-Laatsch ppb 32.1 29.4 26.5 24.6 23.8 23 22.5 22.9 23 23.1 23.5 24.4 25.4 26.4 27.8 29.3 30.5 32.2 33.6 33.8 32.7 30.8 28 25.1
Kenosha Chiwaukee Prairie ppb 40.1 38.7 37.3 36.2 36 36.4 36.4 34.8 33.5 33.1 32.7 32.8 32.4 32.1 32.1 32.3 32.7 33.1 33.5 33.3 32.9 30.5 27.4 23.9
Kenosha Kenosha-Water Tower ppb 38.3 37 36.1 35.5 34.7 33.7 33.1 32 30.4 29.7 29.4 29.4 29.2 29 29.1 29.5 30.4 31.5 32.1 31.1 30 28.2 25.7 22.5
Kewaunee Kewaunee ppb 31.5 31 30.2 29.2 28.4 27.8 27.3 27 27 27.6 28.7 29.8 30.8 32 33.2 34 34.1 33.9 33.8 33.4 32.6 31.3 29.9 28.2
La Crosse La Crosse DOT ppb 22.4 23 23.3 23.3 23.1 22.6 22.5 22.7 23.3 24.3 26 28.3 31.1 34.1 36.6 38.8 40.7 42.2 43.1 42.6 41.4 39.6 37.2 33.9
Manitowoc Manitowoc ppb 30.1 29.4 29.3 28.8 27.8 27.1 26.8 26.6 26.5 26.6 27 27.8 29.2 30.4 31.6 32.2 32.6 32.8 32.5 31.2 28.8 26 22.9 19.4
Marathon Lake Dubay ppb 28.1 28.7 29.3 29.6 29.4 29.1 29 29.2 29.2 29.7 30.4 31.6 33.3 35 36.3 37.4 38.3 38.9 39.5 39.5 39 38.4 37.8 37.3
Milwaukee Bayside ppb 34.6 33.3 33.2 33.2 32.7 31.7 31 30.5 30.3 30.2 29.9 29.6 29.5 29.5 29.9 30.4 30.7 30.7 31 30.5 28.3 25.3 21.8 18
Milwaukee Milwaukee-16th St. Health Center ppb 23.4 25.1 27.1 28.5 30.9 29.7 28.8 28 27.7 27.6 27.4 26.9 26.6 26.5 26.8 27.6 27.9 27.6 26.6 25.5 23.8 20.7 17.5 14.2
Milwaukee Milwaukee-UWM UPark ppb 35.7 34.3 33.9 33.2 33.4 32.2 31.6 31 30.7 30.7 30.3 30 29.7 29.6 29.7 30.2 30.5 30.5 30.5 30.1 28.6 25.8 22.3 18.4
Outagamie Appleton ppb 21.3 21.7 22.8 24 24.7 25 25.2 25.6 25.9 26.4 26.8 27.8 29.3 30.8 32.2 33.6 34.7 35.6 35.9 34.9 32.7 30.2 27.7 24.6
Ozaukee Grafton ppb 29.5 29.1 30.1 31.4 30.8 30.2 29.6 29.2 29 28.8 28.5 28.2 28.1 28.4 29.2 30 30.4 30.4 30.4 30.5 29.3 27.3 24.3 21.5
Ozaukee Harrington Beach Park ppb 32.2 31.1 31.5 31.3 30.9 30.1 29.4 29 29 28.8 28.7 28.6 28.6 29.2 30.1 30.6 30.7 31 31.1 31 31.1 29.7 28.3 27
Racine Racine-Payne & Dolan ppb 37.2 36.5 35.4 35 34.9 35.1 33.1 31.5 30.7 29.9 29.4 29.4 29.3 29.1 29.1 29.4 29.8 30.3 30.5 30.3 29 26.2 23.1 20.1
Rock Beloit-Converse ppb 39.6 37.2 34.8 32.2 29.5 27.1 25 23.4 22.3 21.6 21.5 22.1 23 24.1 25.6 27 29 31.1 32.6 31.6 28.9 25.5 21.8 17.7
Sauk Devils Lake ppb 17.5 17.2 16.8 16.6 16.8 17.5 18.5 19.3 20.3 21.4 23.2 25.1 27.2 29.5 31.8 34.3 36.5 38.4 38.9 37.4 35.2 32.3 29.3 26
Sheboygan Sheboygan-Haven ppb 32.6 31 30.5 30.1 29.3 28.4 27.9 27.8 27.6 27.5 27.3 27.5 28.4 29.4 30.4 31 31.6 32.2 32.6 32.3 30.8 29.1 27.1 25
Sheboygan Sheboygan-Kohler Andrae ppb 31.1 30.1 29.5 28.9 28.7 28.1 27.6 27.4 27.4 27.2 27.2 27.3 27.6 28.6 29.4 29.9 30.2 30.8 31.2 31.4 30.1 28 25.5 23
Vilas Trout Lake ppb 29.2 26.9 24.4 21.6 19.2 17 16.1 17.3 19.4 22.4 25.6 29.7 33.8 37.5 40.1 41.7 42.5 42.9 43.3 43.5 42.6 41 38.6 36.1
Walworth Elkhorn ppb 41.7 39.6 36.8 34.3 32.2 30.4 28.7 27.4 26.9 26.7 26.9 27.2 27.6 28.1 28.9 29.9 31.4 32.9 33.9 34.3 33.5 32.6 31.5 30.3
Waukesha Waukesha-Cleveland Ave. ppb 36.4 33.6 31.5 29.9 28.8 28.3 27.8 27.2 26.9 26.9 26.6 26.4 25.9 25.7 26.4 27.8 29.1 30.4 31.3 30.9 29.4 26.7 23 18.8