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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/4/2025 12:00 to 8/5/2025 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,Juneau,Jefferson,Kenosha,Kewaunee,Lafayette,La Crosse,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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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 27.2 24.2 20 16.2 12.4 9.2 7.7 7.9 8.5 9.9 12.4 15.6 18.9 22.6 26.3 29.2 30.9 31.9 31.7 30.6 29.4 27 25.1 23.9
Brown Green Bay UW ppb 32.6 29.5 26.5 24.8 24.1 22.8 22.2 22.5 23 23.6 24.3 25 26 27.8 28.8 28.9 28.9 28.9 29 29 28.7 28 27.2 26.5
Columbia Columbus ppb 30.1 28.3 27 25.6 24.9 24 23.3 23.8 24.8 25.3 25.5 26.2 27.3 28.8 30.3 30.9 30.8 30.8 30.2 30.2 28.9 27.7 26 24.4
Dane Madison East ppb 37.1 35 32.9 32 30.7 30.2 29.5 29 28.9 29.2 29.7 29.8 30.1 30.6 31.2 31.9 32 31.4 30.8 29.8 28.8 27.8 26.6 24.9
Dodge Horicon Wildlife Area ppb 35.8 32.8 30.5 27.5 24.6 23.1 21.5 20.3 21 22.5 23.1 25.6 28.4 29.1 29.9 31.5 31.5 31.1 30.5 29.5 28.4 26.8 25.1 23.6
Door Newport Park ppb 24.8 22 19.2 18.4 18.9 19.5 20.1 21 22.2 22.9 24.4 26.1 27.3 28.6 29.2 29.1 28.8 28.5 27.8 27.2 26.7 26 25.2 23.9
Eau Claire Eau Claire DOT Sign Shop ppb 14.6 12 9.1 7.9 8 8.3 9.1 10.3 11.3 12.2 14.3 16.9 19 21.6 24 26.1 27.4 28.1 27.7 26 23.3 19.8 16.1 12.5
Fond du Lac Fond Du Lac ppb 34.8 32.1 30.3 28.6 26.5 23.8 20.8 19.6 19.2 19.2 19.5 21 23.1 25.7 28.3 30 31 31.8 32.1 31.1 29.5 27.7 26.7 25.2
Forest Potawatomi ppb 25.5 23.9 23.6 23 22.2 21 20.2 19.8 19.5 19.5 19.4 19.8 20.7 21.8 23.1 24.4 25.4 26.5 27 26.7 26.1 25.4 24.8 23.8
Jefferson Jefferson-Laatsch ppb 30.2 26.5 23.2 21.2 19.7 17.9 17.1 16.9 17.8 20 23.4 25.8 28.3 31.4 33.4 34.8 35.7 35.3 33.2 31.4 29.3 27.5 25.7 23.7
Kenosha Chiwaukee Prairie ppb 22.6 20.7 20.9 21.9 22.8 24.3 24.9 25.3 26.9 29 31.1 33.9 36.8 39.3 39.5 40.6 40.8 40.9 39.9 38.2 35 32.2 29.1 26.6
Kenosha Kenosha-Water Tower ppb 21.9 19 16.5 16.1 17.3 17.7 17.9 18.4 19.7 22.1 25.2 28.4 31.3 34.7 36.8 38.1 38.7 38.5 36.9 34.6 32 29.1 26.6 24.4
Kewaunee Kewaunee ppb 32.1 30 27.3 25.1 23.4 21.9 20.7 20.2 20.2 21.1 22.8 24.7 26.2 27.7 29.2 29.9 30.1 29.5 28.7 27.5 26.6 25.7 25.1 24.4
La Crosse La Crosse DOT ppb 24.5 20 17.6 14 13.3 12.8 13.6 15.3 17 19.7 20.8 23.9 25.2 26.8 28.2 29 29.8 30.4 30.6 30 28.8 27.4 25.7 23.8
Manitowoc Manitowoc ppb 31.1 25.4 19.8 15.5 13.3 11.9 10.9 10.8 12.6 15.6 19.3 23 26.1 28.9 30.9 32.5 33.5 33.6 31.8 28.9 26.2 24.7 23.2 21.5
Marathon Lake Dubay ppb 33.7 32.9 31.8 30.3 28.8 27.2 25 23.2 22.1 21.1 20.9 21.3 22.2 23.4 24.9 26.1 26.8 27.2 27.7 28 27.6 27.3 26.5 25.1
Milwaukee Bayside ppb 22.4 21 21.2 21.2 21.3 21.1 20.2 20.7 21.9 24.1 26.7 29.6 32.6 35.9 38.5 39.2 39.2 38.7 37.5 35.4 33.3 31.9 30.1 28.7
Milwaukee Milwaukee-16th St. Health Center ppb 32.2 30.5 28.6 27.3 26.6 25.3 22.7 21.4 21.9 23.1 25.7 28.5 31.2 34.3 37.3 39 39.3 38.8 37.1 34.8 32.5 30.3 27.9 25.9
Outagamie Appleton ppb 33.9 31.6 29 25.9 22.7 19.8 17.4 16.3 16.2 16.8 18 19.8 22.4 25.2 27.1 28 28.2 28.2 28 27.3 26.6 25.8 24.9 23.5
Ozaukee Grafton ppb 30.7 29.3 28.9 28.8 27.8 25.9 23.8 22.2 21.5 22.5 24.3 26.4 29 32.2 34.6 35.9 36.7 36.3 35.3 33.2 31.3 29.5 27.9 26.3
Ozaukee Harrington Beach Park ppb 29.1 27.7 26.8 25.8 25.3 23.8 22.3 21.9 21.8 22.4 24.1 26.4 28.8 31.7 34.1 35.9 36.6 36.2 35.1 33.6 31.9 29.7 27.8 25.8
Racine Racine-Payne & Dolan ppb 30.8 29.8 28.4 27.8 28 27.7 26.3 25 24 23.8 25.5 27.4 29.6 32.4 35.3 39.2 41.7 42.5 42.7 42.2 41.3 40 37.8 34.1
Rock Beloit-Converse ppb 20.9 17.2 15 14.2 12.7 12.3 13.3 15.3 17.3 19.5 21.9 25 29 32.6 35.4 36.8 37 36.3 35.2 33.9 31.7 29.8 28.1 26
Sauk Devils Lake ppb 18.1 13.8 11.1 9.4 9.6 11.9 14.2 15.6 17.2 19 21.1 23.9 25.9 25.9 26 27 28 28.9 29.5 29.3 28.5 27.6 26.6 25.4
Sheboygan Sheboygan-Haven ppb 33.6 31.2 28.8 26.9 25 22.8 20.6 18.9 17.4 18 20 23.2 27.1 30.6 33.2 33.3 33.7 34.1 33.7 32.3 30.3 28.2 26.7 25
Sheboygan Sheboygan-Kohler Andrae ppb 29 25.8 22.6 20.1 18.9 18 17.2 17.4 18.1 19.4 22 25.4 28.7 31.9 34.8 36.9 38.1 38.2 37.5 36 34.2 31.8 29.7 27.6
Vilas Trout Lake ppb 21.9 21.4 21.1 21.2 21.3 21.8 20.7 19.1 18.2 18.2 19.1 20.3 21.8 23.9 26.2 27.9 29.3 30.3 31.2 30.8 29.3 27 24.2 21.6
Walworth Elkhorn ppb 31.6 29.3 27.4 26.1 24.3 23 21.1 20.9 21.1 22.1 24.5 27.1 30.3 33.2 36.1 37.9 39 38.7 37.3 35 32.6 30.5 27.8 25.1
Waukesha Waukesha-Cleveland Ave. ppb 31.3 27.4 24.3 21.4 19.1 16.4 14.8 14.2 14.2 17.3 20.7 24.4 27.2 30.6 33.3 35.5 36.6 36.1 34.4 32.2 30.3 29 27.5 25.9