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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/2/2025 12:00 to 8/3/2025 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,Iowa,Green Lake,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lafayette,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sawyer,Sauk,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

8-HR Ozone Summary

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Monday, 
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 26.5 24.9 22.6 20.4 18.9 16.6 15.2 15.4 16 16.2 17.4 18.7 19.3 21 22.4 22.4 22.4 22.3 22 21.9 21.5 20.9 20.3 19.4
Brown Green Bay UW ppb 28.2 25.2 22.7 21 20.2 19.8 19.7 20.4 21.1 22 23.2 24 24.5 24.9 25.5 26.3 27.2 28.2 28.9 29.3 29 28.7 28.3 27.7
Columbia Columbus ppb 29.7 27.2 25.6 24.1 22.6 21.2 20.5 20.7 21.8 22.9 23.9 25.4 27.2 29.7 32.2 33.9 35 35.1 35.1 34.5 33.8 32.9 31.8 30.8
Dane Madison East ppb 31.3 29.9 28.8 28.2 28.4 28.3 28.2 27.6 27.2 27.2 27.8 29 30.2 31.6 33.1 34.8 36.1 36.5 36.1 34.7 33.2 31.6 29.5 27.1
Dodge Horicon Wildlife Area ppb 29.5 26.6 24.4 22.8 21.5 20.5 19.8 19.4 19.8 21.4 22.8 24.5 26.3 28.3 30.2 32.1 33.3 34 34.1 33.9 33.5 33.2 32.8 32.2
Door Newport Park ppb 37.2 34.9 33 31 28.9 27.2 26 25 25.1 25.7 26.6 27.7 28.5 29.1 29.6 30.4 30.6 29.9 28.7 27.4 26.6 25.7 25.4 25.3
Eau Claire Eau Claire DOT Sign Shop ppb 19.4 17.1 15.8 14.5 12.8 10.5 9.1 8.5 8.4 8.9 10.2 12.7 16 19.3 23 26.2 28.2 29.4 29.2 28.6 27.8 27.3 26.5 27.8
Fond du Lac Fond Du Lac ppb 27.1 24.9 24.1 24.2 24.2 23.8 23.4 23.1 23.5 24.6 25.5 26.2 27.6 29.3 31.1 32.5 33.1 33.1 32.9 32.3 31.1 30.1 29.3 28.7
Forest Potawatomi ppb 28.6 28.7 28.7 28.1 26.9 25.1 23 21.5 20.9 20.9 21.6 22.7 23.8 25.2 26.8 28 28.3 27.8 27 26.2 26 25.8 25.6 25.1
Jefferson Jefferson-Laatsch ppb 24.3 22.1 20.2 19.8 19.5 19.2 19 19.3 19.8 21.2 23.4 25.6 27.9 30.2 32.6 34.5 35.5 35.6 35.2 34.6 33.6 32.8 32 31.1
Kenosha Chiwaukee Prairie ppb 17.4 14.5 13 13.1 14.5 16.2 18.1 19.9 21.7 24 26.2 28.7 31.2 34.2 36.8 38.8 40.3 41.3 41.5 41.6 41.4 40.6 40.1 39.9
Kenosha Kenosha-Water Tower ppb 19 15.3 13.1 11.8 11.6 12.5 13.8 15.6 18.6 21.6 23.9 26.6 29.4 32.3 35.2 37.6 39 39.7 40 40 39.6 39.2 38.7 38.2
Kewaunee Kewaunee ppb 32.7 30 27.2 24.2 22.3 20.4 19.5 19.5 20.1 21.1 22.6 24.5 25.6 27.3 28.6 29.6 30.5 31.2 31.7 31.9 31.9 31.6 31.2 30.6
La Crosse La Crosse DOT ppb 20.2 17.4 15.1 13.3 12.5 11.6 11.1 10.9 11.3 12.5 14 16.2 19.1 22.8 26.6 30.1 33.1 34.6 35.3 35.2 34.6 33.3 31.9 30.8
Manitowoc Manitowoc ppb 30.9 26.8 26.8 24.4 20.8 18.3 17.6 18.6 20.1 22.9 24 24.9 26.7 27.9 29.3 30.4 31.3 31.6 31.5 30.3 29.5 28 27.2 26.7
Marathon Lake Dubay ppb 25.8 24 22.1 20.9 19.6 18.7 17.9 16.9 16.5 16.6 17.7 19 20.8 22.4 23.8 25.7 26.8 27.2 27.5 28 27.3 26.4 25.8 25.1
Milwaukee Bayside ppb 25.7 22.8 20.3 18.6 18.1 18.6 19.3 20.3 21.8 23.5 25.1 26.8 28.7 30.7 32.9 34.8 35.9 36.4 36.7 36.8 36.1 34.7 33.9 33.4
Milwaukee Milwaukee-16th St. Health Center ppb 22.2 19.8 18.2 17.8 18.2 18.8 19.2 19.9 21.2 23.4 25.4 27.3 28.9 30.9 32.8 34.1 35 34.9 34.5 33.6 32.9 32 31.3 31
Outagamie Appleton ppb 27.5 24.9 22.9 21.5 20.2 18.8 18.2 18.3 18.7 18.8 19.1 20.1 21.4 22.9 24.3 26.1 27.1 27.9 28.3 28.4 28.5 28.5 28.5 28.3
Ozaukee Grafton ppb 30.3 27.6 25.2 23.6 23 22.2 21.8 22.3 23.3 24.6 26 27.5 29 31 33.1 35.1 36.3 36.9 36.8 36.2 35.5 34.6 33.1 31.9
Ozaukee Harrington Beach Park ppb 29 26.2 23.9 22.5 21.4 20 19.7 20.1 20.8 21.9 23.5 25.2 26.8 28.9 30.6 32.2 33.2 33.6 33.1 32.4 31.6 30.6 29.7 29.1
Racine Racine-Payne & Dolan ppb 26.2 23.5 21.3 19.7 19.2 19.5 20.1 20.6 22.1 23.7 25.4 27.5 30.1 32.5 34.7 36.7 37.8 38.7 39 39.1 38.6 38.1 37.7 37.6
Rock Beloit-Converse ppb 25.2 21.8 18.7 17 14.5 12 10.6 10.7 12.2 15.1 18.9 22.3 26.3 30.4 33.7 36 37.6 37.9 37.6 36.9 36.1 35.3 34.3 33.3
Sauk Devils Lake ppb 17.7 15.1 14.6 16.9 18.9 20.8 22.2 23.6 25.7 28.1 29.7 29.5 29.6 29.5 30.3 31.2 31.3 30.8 29.7 29.4 29.3 29.5 28.5 27.2
Sheboygan Sheboygan-Haven ppb 27.7 25 22.6 20.9 19.9 19.3 19 19.2 20.1 21.3 22.9 24.4 25.5 26.8 28.2 29.2 29.8 30.1 29.9 29.7 29.2 28.5 27.9 27.4
Sheboygan Sheboygan-Kohler Andrae ppb 35.7 34.2 29.9 26.5 22.4 25 27.5 28.7 29.7 31.9 33.4 33.6 33.9 34 33.9 33.6 33.3 33.4 33.4
Vilas Trout Lake ppb 31.4 30.3 28.7 26.8 24.7 23.4 22.6 22.2 22.1 22.3 23.1 23.9 24.7 24.9 25.1 25.2 25.4 25.3 24.8 24.1 23.7 23.2 22.6 22.2
Walworth Elkhorn ppb 23.6 22.5 21.4 21.1 21 20.8 20.3 19.9 20.3 21.1 22.9 25.2 27.6 29.9 32 33.8 35.1 35.8 35.6 35.1 34.3 33.5 32.7 31.6
Waukesha Waukesha-Cleveland Ave. ppb 21.2 18 15.3 12.8 11.2 10.1 9.8 10.8 13.8 16.8 19.8 23.3 26.8 30.1 33 34.9 35.9 35.8 35.3 34.6 33.8 32.9 32.1 31.2