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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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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 16.7 15.5 16 17.6 19.3 19.6 19.2 19.2 18.9 19.3 19 19.3 20.2 21.8 24.4 26.9 29.7 32.1 33.1 31.9 28.8 25.6 21.5 17.4
Brown Green Bay UW ppb 21.2 20.4 19.7 19.3 19.3 19 19.2 19.6 20.4 22 23.4 24.7 26.3 28.1 30.3 33.3 36 36.1 35.5 34.2 31.6 29.4 26.7 23.1
Columbia Columbus ppb 25.1 23.4 22.1 20.9 19.8 18.1 16.7 15.9 15.5 15.5 17 19.5 22.3 26.1 29.6 32.7 35.7 38.4 39.1 38 36.3 33.5 31 28.3
Dane Madison East ppb 25.9 24 22.6 21.5 20.8 20.6 20.6 20.3 20.8 21.8 23.4 25.6 28.3 31.1 33.9 36.5 38.3 39.4 39.8 39.3 37.1 34.3 31.7 28.8
Dodge Horicon Wildlife Area ppb 25.8 23.5 21.5 20 19.2 18.5 18.3 18.4 19.3 19.7 20 21.9 24.7 27.9 31.2 34 36.1 38.5 40.3 40.1 38.7 36.6 34.3 32.2
Door Newport Park ppb 29.3 29.5 30 30.2 30.2 30.1 29.7 29.5 29.4 29.6 30 30.4 30.7 31.8 32.8 34.2 36 37.6 39.2 39.7 39.3 38.3 36.9 34.5
Eau Claire Eau Claire DOT Sign Shop ppb 27.1 25.5 24.7 24.1 22.7 21.3 20.6 20.2 20.9 22.1 23.4 24.8 27.3 30.5 33.8 36.9 38.6 39.4 39.2 37.6 34.4 29.3 23.7 18.2
Fond du Lac Fond Du Lac ppb 22 19.9 19.3 18.9 18.9 18.9 19 19.4 19.5 20.3 21.1 22.1 23.9 26.4 29 31.3 34 35.8 36.5 36.8 36.3 35.3 33.9 32.8
Forest Potawatomi ppb 21.9 21.2 21.1 21 20.6 19.8 19.4 19.3 19.8 21.1 21.9 22.9 24 25.5 26.8 28 28.4 28 26.8 25.2 24 22.6 21.5 20.7
Jefferson Jefferson-Laatsch ppb 21 18.8 17.2 17.2 17.4 16.8 16.2 16.2 17.1 18.5 20.8 23.9 27.3 30.7 34.3 37.3 39.4 40.8 41.1 40 37.8 34.7 31.1 27.8
Kenosha Chiwaukee Prairie ppb 17.7 15 12.9 10.9 9.8 9.7 10.2 11.8 13.6 16.2 19 22.6 27.7 34.2 40 44.6 48.2 50.5 51.6 51.6 50.1 46.6 42.8 37.9
Kenosha Kenosha-Water Tower ppb 16.4 13.4 11 8.4 6.1 5.2 6 7.7 10.4 13.4 16.5 21.2 27 33.2 38.7 43 46.7 49.2 50.5 49.6 47 43.6 39.1 34.7
Kewaunee Kewaunee ppb 26.2 25.3 24 22.9 22.2 21.5 21 20.8 21 21.8 23.2 24.5 25.8 28 30.4 33.4 37 40 40.3 40.1 39.6 38.1 36.3 33.3
La Crosse La Crosse DOT ppb 30.7 29.3 27.7 26.6 25.4 24.7 23.8 23.4 23.3 23.9 25.1 26.4 28.1 29.9 31.9 33.6 35.2 36.2 36.6 35.7 33.1 30.2 27.3 23.7
Manitowoc Manitowoc ppb 17.7 15.5 14.2 13.9 14 14.1 15 15.5 15.4 17.4 19.2 20.4 23.2 27.2 32.3 36 38.6 43.1 44 42.7 41.1 39 35.9 30.9
Marathon Lake Dubay ppb 21.6 20.6 20.3 20 20.1 20.7 21.2 21.6 22.5 23.2 23.5 24.2 24.9 25.8 27 28.5 29.5 30.8 31.7 31.8 32.4 32.4 31.7 30.1
Milwaukee Bayside ppb 14.6 11.4 8.3 5.8 3.9 2.8 2.9 4.9 7.8 10.2 14 18.6 23.8 29.8 36.2 41.3 44.8 48.9 50.2 50 48.7 46.4 42.4 37.6
Milwaukee Milwaukee-16th St. Health Center ppb 16.7 15.3 14.1 13.4 12.9 13.2 14.3 14.7 15.4 17.2 19.6 22.4 26.6 31.5 36 40.7 44.6 46.3 47 46.5 44.6 41.6 38.3 34.3
Outagamie Appleton ppb 24.1 22.4 20.8 20.5 21 22 23 24 24.9 25.6 26.8 28.3 29.2 31.3 33.6 35.1 34.9 35.1 35.3 34.9 34.1 31.9 29.2 26.9
Ozaukee Grafton ppb 16.6 14.7 12.8 10.9 11 11.6 12 12.8 14.2 15.4 17.2 21.2 25.3 30.4 36.3 42.5 47.1 50.5 52 51 49.2 46.4 42.2 36.6
Ozaukee Harrington Beach Park ppb 22.9 21.1 19.7 18.1 16.7 15.5 14.9 15.3 15.7 16.8 17.8 20.3 25.3 30.4 36.4 42.2 47 51.1 53.3 52.9 50 47.1 42.9 37.8
Racine Racine-Payne & Dolan ppb 21.6 19.3 17.7 16.3 15.2 14.8 14 14.2 15.3 17.8 20.1 23.1 27.2 33.1 39.1 43.9 48.1 50.7 52 52 50.6 47.2 43.4 39.7
Rock Beloit-Converse ppb 16.5 13.7 12.3 12.6 13.2 15 16.2 16.8 18.2 20.1 22.8 25.9 29.5 32.9 36.2 38.9 41 42.2 42.3 40.1 36.7 32.9 29.1 25
Sauk Devils Lake ppb 22.5 21.9 21.8 21.6 21.5 21.6 22 22.3 22.3 22.4 23.4 24.4 26.5 28.7 30.4 32.3 34.2 35.7 35.9 34.4 31.3 27.4 23.8 20.2
Sheboygan Sheboygan-Haven ppb 18.6 16.9 15.5 14.6 13.7 12.8 12.4 13 13.8 14.9 15.8 17.7 21.6 26.7 32.2 37.3 41.9 45.3 47.4 47.5 45.6 42.3 37.7 33
Sheboygan Sheboygan-Kohler Andrae ppb 17.9 15.7 13.4 12 11.5 11 11.3 12.9 14.6 16.2 18.2 21 25.6 31.7 38.2 43.9 48.4 52.2 53.4 52.2 48.9 44.2 38.8 33.1
Vilas Trout Lake ppb 18.4 16.7 16.2 16.4 16.9 18.7 19.7 20.2 21.4 23 23.7 24.7 25.8 25.8 26.4 27.7 28.6 28.4 27.8 26 23.4 20.1 16.6 13.2
Walworth Elkhorn ppb 25.1 23.2 21.7 20.6 19.7 18.7 18.1 17.3 17.3 18.2 20.1 22.8 25.7 29 32.2 35.4 38 39.9 40.2 39.6 38.5 36.7 34.7 32.5
Waukesha Waukesha-Cleveland Ave. ppb 17.4 14.9 13.1 12.3 11.8 11.1 11.5 12.4 13.1 15.3 17.8 21 25 29.1 32.5 36 39.2 41 41.8 41.5 40.1 38.2 35.7 32.9