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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 12:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Columbia,Crawford,Dane,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Grant,Green,Green Lake,Iowa,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Lafayette,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sauk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

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 27.2 25.6 23.9 22.6 21.2 19.1 18.2 17.7 17.7 19.2 21.3 23.8 26.5 29.5 32.2 34.4 36.1 36.8 35.4 32.9 29.9 26.4 23.1 20.2
Brown Green Bay UW ppb 27.6 25.7 24.2 23.3 22.7 21.6 21.2 21 21.5 22.4 23.8 25.4 27 29.2 31 32.5 33.8 33.5 32.4 31.5 30.9 30.4 29.1 27.5
Columbia Columbus ppb 33.4 31.1 29.3 27.3 25.9 24.6 23.2 22.3 22.1 22.8 23.9 25.4 26.8 28.5 30.5 32.3 33.4 33.6 33.4 33.3 33.4 33.6 33.7 33.7
Dane Madison East ppb 34.9 33.1 31.4 29.6 27.8 26.3 24.7 24 23.5 23.7 24.8 26.3 28.3 30.4 32.8 34.6 36.4 37.4 37 35.3 32.4 28.6 23.9 19.3
Dodge Horicon Wildlife Area ppb 36.1 33.2 30 26.8 24.7 23.2 21.9 21 20.8 21.7 23.2 25.3 27.3 29.4 32.1 34.8 37 37.8 37.7 37.3 37 35.7 33.8 31.3
Door Newport Park ppb 31 30.5 29.8 28.8 28.1 27.4 26.6 26.1 26 26.3 26.7 27.7 28.8 30.1 31.4 32.4 32.9 32.7 32.8 31.9 30.1 28 26 24.5
Eau Claire Eau Claire DOT Sign Shop ppb 24 21.8 18.8 15.8 13.2 10.4 8.9 8.1 7.9 9.1 12.3 15.8 19.7 23.5 26.6 29 30.7 31.3 30.6 28.2 24.6 20.7 16.9 13
Fond du Lac Fond Du Lac ppb 31 28.9 26.6 24.7 23 20.9 19.9 19.4 19.4 20.3 22 23.8 26 29.3 32.4 35.3 37.7 38.8 38.9 38.5 37.4 36.1 34.6 33.2
Forest Potawatomi ppb 26.8 26 25.5 25 24.4 23.7 23.3 23 23.1 24 25.1 26.4 28.1 29.8 31.1 32.4 33.3 33.1 31.6 30.4 29.5 28.7 28 27.3
Jefferson Jefferson-Laatsch ppb 34.2 32.2 30 27.8 24.9 21.9 19.9 18.6 18.1 18.4 20 22 25 28.4 31.3 33.8 35.3 35.9 34.8 32.6 29 25.2 21.4 17.1
Kenosha Chiwaukee Prairie ppb 37.6 34.6 32 29.5 26.9 24.2 21.7 20.1 19.6 20.6 22.2 24.6 27.9 31.8 36.1 40.4 43.8 46.4 45.8 43.5 40.1 35.8 30.9 25.3
Kenosha Kenosha-Water Tower ppb 33.1 30.5 26.7 22.9 19.3 15.8 13 12.2 12.4 13.3 16.8 21.3 26.2 31.2 36.1 40.3 43.7 46 47.3 47.1 45.8 42.6 38.7 35.1
Kewaunee Kewaunee ppb 26.3 24.2 22.2 20.8 19.7 18.9 18.4 18.5 19.2 20.4 22.4 24.6 26.7 28.9 30.9 32.6 34 35.3 35.7 35.5 35.6 35.5 35.1 34.6
La Crosse La Crosse DOT ppb 30 26.5 22.6 19.1 16 13 10.5 9.8 9.5 10.8 13.6 17 18.6 20.7 24.8 28.2 31.5 33.4 32.7 30.4 29.3 27.9 25.9 22.9
Manitowoc Manitowoc ppb 26.8 24.8 23.1 21.6 20 18.9 17.7 17.8 19.1 20.2 22.1 24.3 26.8 29.7 32.9 35.3 37.1 38.2 38.8 39.7 38.5 35.3 30.6 25.1
Marathon Lake Dubay ppb 27.6 26.1 24.9 24 23.3 22.5 21.9 22.1 22.5 23.8 25.5 27 28.4 30 31.6 33.1 34.2 34.4 34.2 34.3 34.2 33.8 32.6 30.5
Milwaukee Bayside ppb 37.8 35.6 33.5 31.2 28.9 26.4 24.4 23 22.5 23.1 24.3 26 28.4 31.2 34.2 37 39.2 40.3 40.4 39.7 37.8 34.9 31.4 27.3
Milwaukee Milwaukee-16th St. Health Center ppb 35.7 33.7 31.7 30 28 25.4 22.9 21.5 20.6 21 22.2 22 24.9 28.4 32 35.2 38 40 40.9 39.9 37.9 36.2 34.1 29.4
Outagamie Appleton ppb 27.5 25.3 23.6 22 20.7 19.4 17.9 17.3 17.6 18.8 20.6 22.7 25 27.7 30.5 32.7 34.2 34.9 34 31.6 28.6 25.8 22.5 19.2
Ozaukee Grafton ppb 34.8 32.2 30 28.1 25.4 22.7 21.1 20.1 20 20.9 22.4 24.5 27.6 31.1 34.2 37.2 39.7 41.2 42.4 41.5 36.9 32.4 28.3 23.5
Ozaukee Harrington Beach Park ppb 31 28.7 26.7 24.8 22.7 20.7 19.3 18.6 18.3 19.1 20.9 23.2 25.8 28.7 31.6 34.5 37.1 38.7 39.5 40.6 41.4 39.3 36.7 33.7
Racine Racine-Payne & Dolan ppb 37.8 35.4 33.1 31.1 29.1 26.9 24.5 22.9 21.6 22.4 23.7 25.5 28.1 31.2 35 38.9 42.8 45 46.4 46.3 44.6 42.6 38.9 34.3
Rock Beloit-Converse ppb 35.1 33.3 31.7 29.9 27.4 24.6 22.4 21.2 20.8 21.2 22.3 24.3 27.9 32.2 36.1 39.3 41 42.2 40.9 37.3 33 28.6 23.7 18.5
Sauk Devils Lake ppb 37.8 36 34.1 32.1 30.2 28.4 26.7 25.5 25.4 25.7 26.3 27.4 29.1 30.6 32.2 33.7 34 33.2 31.2 28.9 26.5 24.1 21.7 19.5
Sheboygan Sheboygan-Haven ppb 29.6 27.6 26 24.5 22.9 21.5 20.3 19.9 20.2 21.4 23.2 25.4 28.1 30.9 33.9 36.2 38.1 39 39.2 38.6 37.4 35.6 33.6 31.4
Sheboygan Sheboygan-Kohler Andrae ppb 29.9 27.4 25.3 23.4 21.7 20.4 19.1 18.8 19.3 20.6 22.8 25.4 28.4 31.8 35.3 37.9 40 41.6 42.4 41.9 40.1 37.7 34.8 32.5
Vilas Trout Lake ppb 29 28.5 28.1 27.7 27.4 26.8 25.9 25 24.6 24.7 25.7 27.1 28.4 30.1 32.1 33.9 35.2 35.6 34.2 31.8 28.7 25.7 21.8 17.7
Walworth Elkhorn ppb 34.5 32.7 30.9 29.1 27.1 24.8 22.6 21.2 20.8 21.1 22.4 24.1 26.5 29.7 32.9 35.2 36.7 37.4 37.2 36 34.5 31.9 29.4 27.1
Waukesha Waukesha-Cleveland Ave. ppb 35 33.2 31.3 29.2 27 24.5 22.3 20.8 20.3 20.8 21.8 23.5 26.2 29 31.8 33.9 35.2 35.7 34.9 32 28.8 25.3 21.9 18.2