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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups PM2.5 levels is in effect from 8/5/2025 12:00 to 8/6/2025 12:00 for these counties: Ashland,Bayfield,Brown,Calumet,Dodge,Door,Douglas,Florence,Fond du Lac,Forest,Green Lake,Iron,Kenosha,Kewaunee,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Oconto,Oneida,Outagamie,Ozaukee,Portage,Racine,Shawano,Sheboygan,Vilas,Washington,Waukesha,Waupaca,Waushara,Winnebago .

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 39.4 36.3 33 30.2 29 29.6 28.9 30.2 31.8 34.3 37.3 40.1 42.2 43.8 46.3 47.2 47.9 48.4 48.6 48.8 48.6 47.4 45.5 42.9
Brown Green Bay UW ppb 41.6 40.4 39.5 38.9 38.1 37.2 36.1 35.4 34.8 34.5 34.4 34.8 35.6 36.1 36.7 37.3 37.9 38.5 39.3 39.5 39.7 40.5 41.1 41.1
Columbia Columbus ppb 41.8 39.7 37.7 35.6 33.3 30.8 28.6 27.6 27.7 28.8 30.4 32.5 35 37.6 39.9 41.1 41.3 40.8 39.6 38 36.4 34.8 33.4 32.4
Dane Madison East ppb 42.1 41.2 40.2 39.5 38 35.9 33.9 32.6 31.8 31.3 31.3 31.5 33 34.8 36.5 37.4 37.8 37.7 37.2 36 34.2 32.2 30.7 29.4
Dodge Horicon Wildlife Area ppb 43.7 42 40.6 39.3 37.6 36.1 34.9 34.1 33.3 33.8 35.3 37.1 39.2 41.5 43.7 43.6 43 42.1 40.3 38.5 36.9 35.4 34.1 33
Door Newport Park ppb 45.6 45.9 46.4 46.7 46.9 46.7 46.1 45.4 44.7 43.9 43.2 42.6 42.6 43.2 44.3 45.2 46 46.6 46.9 46.9 46.4 45.7 45.1 44.3
Eau Claire Eau Claire DOT Sign Shop ppb 39 36.7 35 34.7 35.2 34.6 34.2 34.9 35.5 36.9 38.2 39.2 40.8 43 45.4 47.1 48.2 48.9 49.2 48.9 48.1 47.1 45.7 44
Fond du Lac Fond Du Lac ppb 39.6 38 36.5 35.2 35 34 33.4 32.5 32.2 32.5 33.9 35.8 36.9 38.7 39.7 40 40 39.3 38.1 36.9 35.7 34.7 34.3 34.8
Forest Potawatomi ppb 47 46.1 45.1 44.1 43.1 42.3 41.8 41.5 41.3 41.2 41.3 41.5 42.3 43.3 44.3 45.4 46.1 46.7 47.2 47.7 47.6 47.1 46.5 45.5
Jefferson Jefferson-Laatsch ppb 40.6 38 35.3 33.1 30.3 27.5 25.8 25.5 26 27.1 28.8 30.9 33.4 35.8 37.6 38.3 38.2 37.4 36.3 35 33.7 32.6 31.6 30.7
Kenosha Chiwaukee Prairie ppb 48.3 47.1 45 42.4 41.4 38.9 36.2 33.6 31.5 30.5 30.8 32.5 33.2 34.5 35.9 37.4 38.7 39 39.4 39.6 39.9 39.9 39.8 39.5
Kenosha Kenosha-Water Tower ppb 48 47.2 45.3 42.4 39.3 36.4 33.8 31.5 29.6 28.4 28.5 30.2 32.2 34.1 35.7 37.2 38.3 38.7 38.8 38.6 38.8 38.8 38.4 37.9
Kewaunee Kewaunee ppb 46 45.1 43.7 42.1 40.2 38.1 36.3 34.9 34.1 33.5 33.8 34.7 35.8 37.3 39.1 40.7 41.7 42.7 43.5 43.8 44.1 44 43.5 43.5
La Crosse La Crosse DOT ppb 41.9 41.3 40.7 40.8 42.2 42.6 42.6 42.2 41.9 41.7 41.4 41.3 41.2 41.4 41.7 42.3 43 43.8 44.2 44 43.2 42.4 41.4 40.1
Manitowoc Manitowoc ppb 45.5 44.5 43.3 41.9 40.3 38.8 37.5 35.9 34.5 34.2 34 33.8 34 34.8 35.3 36.1 37.4 38.3 39.6 40.5 41 41.1 41.6 41.9
Marathon Lake Dubay ppb 45.5 44 42.5 41.1 39.5 38.2 37 36.8 37.1 37.7 38.3 38.8 39.6 40.6 41.5 42.2 42.9 43.3 43.3 43.2 42.9 42 40.5 38.6
Milwaukee Bayside ppb 43.4 42.1 40.6 39 36.4 34 31.8 30.1 30.2 30 29.6 29.5 30.7 32.9 34.6 36.6 37.3 37.8 38.7 39.4 39.9 40 40.4 40.3
Milwaukee Milwaukee-16th St. Health Center ppb 35.2 34.7 34 33.1 30.8 28.4 26.1 24.8 24.5 24.5 24.6 24.4 25.8 27.7 29.1 29.9 29.7 29.5 29.1 28.9 29.1 29.3 29.7 29.9
Milwaukee Milwaukee-UWM UPark ppb 42.1 41.4 40.3 38.8 36.1 33.9 31.8 29.9 28.9 28.5 27.7 27.5 29.1 31.1 32.9 34.5 35.4 35.7 36.3 36.9 37 37.1 37.2 37.1
Outagamie Appleton ppb 39.5 38.4 37.9 38.9 38.4 37.3 36.6 36.2 36.1 35.8 35.9 36.6 37.8 39.2 39.5 39.5 39.2 39.3 39.4 38.5 37.7 36.7 36.7 36.6
Ozaukee Grafton ppb 41.4 40 38.5 37.1 35.3 33.4 31.6 30.3 29.9 30.1 30.1 29.9 30.6 32.6 35 37 37.8 38.1 38.7 39.3 40.1 40.2 39.9 39.7
Ozaukee Harrington Beach Park ppb 45.9 44.3 42.7 41.2 39.4 37.3 35.2 34.5 34 33.8 33.9 34 34.2 35.3 37.3 38.8 39.9 40.8 41.8 42.7 43.6 43.9 43.5 43.3
Racine Racine-Payne & Dolan ppb 47.9 47.4 46.3 44.5 42.3 40 37.6 35.5 33.3 31.4 30.5 30.8 31.8 32.9 34.4 35.8 37 38.1 38.8 39.4 39.8 40 40 39.8
Rock Beloit-Converse ppb 32.6 29.5 26.7 26.3 26.7 25.9 25.1 24.7 25 26 27.5 29.1 30.9 32.9 34.4 35.2 35.6 35.4 34.8 33.7 32.2 30.6 29.2 27.9
Sauk Devils Lake ppb 39.2 38.5 38.2 39.2 40.1 40 39.7 39.1 38.8 38.7 38.7 38.5 38.3 38.7 39.6 40.6 41.2 41.3 40.6 39.6 38.6 36.9 35.1 33.1
Sheboygan Sheboygan-Haven ppb 43.8 42.1 40.4 38.8 36.9 35.2 33.5 32.4 32 32 32 32.4 33.2 33.8 35.1 36.9 38.2 39.3 40.5 41.1 41.6 42.2 42.4 41.9
Sheboygan Sheboygan-Kohler Andrae ppb 47.9 46.4 44.9 43.4 42 40.2 38.2 37 36.6 36.2 36 35.9 35.9 36.3 37.7 39.1 40.3 41.8 42.9 43.7 44.6 45.4 45.5 45.3
Vilas Trout Lake ppb 50.9 50.2 49.4 48.6 47.5 46.3 45.1 44.1 43.8 44 44.4 45 46.1 47.4 48.8 49.8 50.5 50.8 50.8 50.5 49.8 48.9 47.9 47.2
Walworth Elkhorn ppb 39.6 36.2 32.8 30 27.3 24.9 23.8 23.7 24.4 25.8 27.7 29.9 32.3 34.5 35.8 36.5 36.6 36.4 36 35.3 34.5 33.5 32.7 31.9
Waukesha Waukesha-Cleveland Ave. ppb 43.7 42.1 40.9 39.7 37.3 34.7 32.4 31.1 30.5 30.8 31 31.5 33.2 34.8 36.2 36.9 36.8 36.3 35.6 34.7 33.9 33.3 32.8 32.8