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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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Sunday, 
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 17.8 16.9 16 17.1 18.8 20 20.1 19.8 19.5 19.4 20.9 22.1 23.6 25.5 27.7 30 32 33.3 33.8 33.9 33.6 32.8 31 28.9
Brown Green Bay UW ppb 18.7 18.5 18 17.4 16.8 15.5 15 15.6 17.1 18.3 20.7 24.3 28.3 32.7 36.9 39.7 41.6 43.2 43 41.8 40.1 38 35.2 31.7
Columbia Columbus ppb 25.1 24 23 22.3 21.5 20.5 19.1 18 18.5 19.8 21.7 24.1 26.9 29.9 33.3 36.5 38.5 39.9 40.3 40.1 39.2 37.6 35.3 32.6
Dane Madison East ppb 25.2 24 22.9 21.4 19.6 17.9 16.3 15.7 16.6 18.3 20.8 24.1 28.4 33.1 37.7 41.2 43.1 43.8 43.4 42.1 39.8 37.3 34.9 33
Dodge Horicon Wildlife Area ppb 26.4 24.6 23.1 21.6 19.8 17.9 15.5 14.1 15.6 17.3 19.4 22.2 25.8 29.5 33.9 37.8 39.2 40.3 40.4 39.5 38.3 36.5 34.4 32
Door Newport Park ppb 20 18.9 19.5 20.6 22.3 23.5 23.4 24.4 25.7 27.6 29.1 30.8 32.6 34.8 37.5 39.8 41.8 42.8 43.1 43.5 43.5 43 41.5 39.7
Eau Claire Eau Claire DOT Sign Shop ppb 16.8 14.5 11.9 10.5 9.4 9.1 9.1 9.7 10.9 12.6 15.9 20.2 24.5 28.5 32.1 34.9 36.6 37.6 36.1 33.1 30 27.6 24.6 21.4
Fond du Lac Fond Du Lac ppb 24.5 23.8 23.6 23 22.3 22 22.3 22.9 23.9 25.1 26.8 28.8 30.9 33.2 35.1 36.6 37.6 38.2 37.6 36.2 34.7 33.1 31.1 29.3
Forest Potawatomi ppb 26.5 25.9 25.2 24.5 23.4 23 23.3 23.2 23.3 23.2 24 25.2 26.7 28.1 29.1 30.1 31.1 31.4 30.6 30 29.5 29.1 28.8 28.9
Jefferson Jefferson-Laatsch ppb 25.4 23 20.4 17.9 15.4 13.2 11.3 11.4 13.2 15.7 19 22.7 27.1 31.5 35.8 38.1 39.1 39.5 38.9 37.1 34.7 32.3 29.6 26.7
Kenosha Chiwaukee Prairie ppb 37.3 37.3 37.7 37.9 37.6 37.2 36.8 36.4 35.9 35.2 33.9 33.2 33.2 33.4 33.9 34.8 35.6 36.5 36.5 34.6 31.2 27.6 23.6 20.1
Kenosha Kenosha-Water Tower ppb 32.9 32.1 32.3 32.8 32.9 33 33 32.8 32.8 32.5 31.7 30.9 30.9 31.7 32.6 33.8 35 36.2 36.8 36.2 34.3 30.9 27.1 23.3
Kewaunee Kewaunee ppb 26.9 26.6 27.2 26.2 24.4 22.2 20.7 20.7 21.5 22.5 24.1 26.8 30.6 34.5 37.2 38.5 39.6 40.4 40.5 40.3 39.7 38.8 37.4 35.2
La Crosse La Crosse DOT ppb 21.2 18.5 15.9 14.8 13 11.9 10.1 9.2 9.5 10.8 12.9 15.2 18.5 22.6 26.7 30.2 32.8 34.4 35.2 34.5 32.5 29.8 26.6 23.4
Manitowoc Manitowoc ppb 13.1 11.2 10.1 8.5 6 5.1 4.7 5.8 10 14.3 19.2 24.2 29.4 35 35.9 39.5 40.4 41.3 41.5 41.7 41.4 40.2 37.7 34.3
Marathon Lake Dubay ppb 26.4 25.6 25.2 23.4 20.9 18.5 16.5 15.6 15.7 17.1 19.1 21.9 25.7 29.4 33 35.5 36.8 37.1 36.4 34.4 32.3 30.5 28.8 27.3
Milwaukee Bayside ppb 32.2 29.2 28.6 29.1 29.8 30.6 31.2 32 33.3 36.2 37.4 38 38.2 38.3 38.9 39.5 40.6 41.2 41.1 40.3 38.4 35.6 32.3 28.8
Milwaukee Milwaukee-16th St. Health Center ppb 28.2 28.2 28.2 28.5 29.1 30.3 31.4 32.5 33.7 33.9 33.8 33.4 33.6 33.8 34.2 35.1 35.9 36.3 36.4 35.3 32.9 30.1 27.5 24.8
Outagamie Appleton ppb 16.3 13.7 12.1 11.5 10.9 10.3 10.1 10.7 12.3 15.1 18.4 21.9 25.8 30.3 34.4 38 41 42.2 41.9 40.9 39 36.9 34.1 30.7
Ozaukee Grafton ppb 28.5 25.5 23 21.1 21.2 21.9 22.8 24.8 27.6 30.4 33.5 37.4 38.9 40 41 41.9 42.4 43.4 43.6 42.9 41.1 39 36.5 33.4
Ozaukee Harrington Beach Park ppb 26.7 24.8 23.7 23.2 22.9 23.3 23.9 26 28.9 31.6 33.8 35.3 36.7 37.9 39.1 40 40.4 40.9 40.9 40 38.7 37.3 34.9 31.8
Racine Racine-Payne & Dolan ppb 35.7 35.2 35 35.1 35.3 35.9 35.7 35.8 35.7 35.2 34.3 33.5 33.1 32.8 33.5 34.2 35.4 37 38.3 38.2 36.6 34.3 31.6 29
Rock Beloit-Converse ppb 27.3 24.6 22.6 21 20 20.2 20.3 21.4 23.1 25.1 27.2 29.4 31.8 33.6 35.6 37.5 38.8 39.4 38.9 37.3 35.6 33.7 31.4 28.6
Sauk Devils Lake ppb 29.5 31.2 31.3 30.6 29.3 27.1 24.8 23.8 23.4 24.1 25.5 28.1 31.3 34.9 38.2 39.9 40.8 40.5 38.7 35.2 31.6 27.9 24.2 20.9
Sheboygan Sheboygan-Haven ppb 24.3 22.9 21.4 20.1 18.6 17.3 16.5 17.5 19.3 21.5 24.4 27.4 30.6 33.6 36.1 37.7 38.8 39.4 39.1 38 36.6 35 32.8 30.4
Sheboygan Sheboygan-Kohler Andrae ppb 29.2 27.4 25.7 24 23.4 22.9 21.6 22.4 22.9 24.1 42.2 40.4 39 39
Vilas Trout Lake ppb 24.3 22.6 21 20.2 19.7 19.3 19.5 20.4 21.8 22.9 24.3 25.8 27.5 29.5 31 32.1 33 33.3 33.2 33.4 33.7 33.8 33.4 32.7
Walworth Elkhorn ppb 24.7 22.9 21.1 20.8 21.5 22.4 23.4 24.4 25.5 26.6 28.2 29.1 29.7 30.3 30.8 31.6 32.4 32.9 33.1 31.9 29.9 28 26.7 25.4
Waukesha Waukesha-Cleveland Ave. ppb 26.3 24.1 22.4 21.2 21.5 22.4 23.6 24.8 26.4 29 31.4 33.7 35.5 36.4 37.2 38.2 39 38.9 38.3 36.9 34.6 31.9 28.8 25.5