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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/1/2025 12:00 to 8/2/2025 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 15.2 16.4 17.5 18.4 19.9 21.8 23.5 23.8 23.9 23.4 23.8 24.6 25.3 25.4 26.1 28 29 29.2 27.6 25.2 22.4 21.8 21.2 19.2
Brown Green Bay UW ppb 24.7 24.7 24.7 24.1 22.3 19.4 17.2 16.3 15.4 14.6 14.1 14.5 16.3 19.2 21.6 22.8 24.1 25.2 26 26 25.1 23.2 20.9 18
Columbia Columbus ppb 34.1 32.4 31 29.5 27.8 25.9 24.6 23.7 22.7 21.7 21.2 21.6 22.2 23.1 24 25.1 26.4 27.8 28.8 29 28.4 27.9 27 25.4
Dane Madison East ppb 33.2 32.2 30.6 29.2 27.6 26 24.2 23.4 22.3 21.2 20.5 20.5 21.1 22 23.3 24.2 25.4 27.1 28.6 29.2 28.8 27.7 26.3 23.9
Dodge Horicon Wildlife Area ppb 30.8 30.1 29 27.6 26.5 25.3 24.6 24 23.1 22 21.2 21 21.4 22.1 22.7 23.3 24.2 25.3 26.1 26.1 25.6 24.9 23.8 22.3
Door Newport Park ppb 27.5 27.6 28.6 30 30.9 31.7 31.5 30.5 29.8 28.6 26.5 24.2 23.7 23.4 23.8 24.5 24.9 25.5 26.1 26 24 21.5 18.2 15.4
Eau Claire Eau Claire DOT Sign Shop ppb 26.9 25.4 24.1 22.5 20.7 18.9 17.9 17.2 17.6 18.6 19.5 20.9 22.8 25.2 25.7 26.7 27.2 27.2 26.4 24.7 21.5 18 14.6 12.9
Fond du Lac Fond Du Lac ppb 28.3 27.4 26.6 26.2 25.7 25.3 23.8 22.4 21.3 19.7 18.2 17.6 17.3 17.9 19.3 20.4 21.5 23 24.2 24.5 24.3 22.8 21.1 18.9
Forest Potawatomi ppb 18 18.6 18.9 18.8 18.6 18.2 17.6 17.3 16.9 16.7 17.1 17.5 18.4 19.5 20.7 21.6 22.5 22.9 21.8 20.6 18.9 17.2 16.3 15.4
Jefferson Jefferson-Laatsch ppb 33 32.1 31 29.9 28.9 27.2 25.2 23.7 22.9 22.1 21.3 20.4 20.2 20.9 22.2 23.1 23.5 23.9 24.4 24.6 24 22.2 19.7 17.1
Kenosha Chiwaukee Prairie ppb 33.3 30.3 27.1 24.2 21.6 20.5 20.3 19.6 20.1 21.1 22.2 22.8 23 22.2 22 22 22.7 23.2 23.7 24.7 25.8 26.9 27 26.7
Kenosha Kenosha-Water Tower ppb 30.5 27.5 24.6 21.9 19.5 18.6 18.7 18.8 18.9 20.3 21.3 21.7 21.9 21.3 21.3 22.1 22.6 22.6 23.1 24.1 25 25.6 25.4 23.5
Kewaunee Kewaunee ppb 36 35.2 34.6 33.3 32.3 31.3 29.5 27.8 26.2 24.7 23.5 22.6 22.1 21.8 22.6 23.7 24.9 25.7 25.9 25.5 24 21.9 19.2 16.6
La Crosse La Crosse DOT ppb 32.5 31 29.7 28.2 26.8 25.4 23.8 22.3 21.6 21.5 21.9 22.7 23.7 24.9 26.5 28.6 30.4 31.7 32.2 31.1 29.1 27 24.5 21.8
Manitowoc Manitowoc ppb 29.5 28.1 27.2 27.3 26.7 25.1 22.4 19.9 18.4 17.1 15.9 14.9 15.4 17.8 20 21.8 22.8 24 24.6 23.7 21.7 19.8 17.2 14.6
Marathon Lake Dubay ppb 28.5 26.6 25.3 24.3 23.4 22.4 21.8 21.1 21.7 22.6 24 25.5 27.1 29 29.1 29.1 29.5 29.8 28.9 27.8 26.2 25 23.7 21.9
Milwaukee Bayside ppb 33.9 32.4 30.6 29.2 27.6 26.3 24.8 23.4 22.8 22.6 22.2 21.7 21.4 21.8 22.8 23.6 24.1 25 26.2 27.5 27.7 26.2 23.6 20.5
Milwaukee Milwaukee-16th St. Health Center ppb 29.3 27.9 26.4 24.5 22.8 21.7 20.7 19.9 19.6 19.7 19.7 19.6 19 19 19.7 20.6 21.1 21.4 22 22.8 23.1 22.2 20.2 17.2
Outagamie Appleton ppb 24.5 23.4 23 23.4 23.7 22.8 22.1 21.5 20.3 19.1 18.4 18.4 18.8 19.8 20.7 22 23.2 24.1 24.1 22.7 20.7 18.3 16 13.8
Ozaukee Grafton ppb 31.1 29.4 27 25.3 23.8 23 22.4 21.4 20.8 20.4 20.4 20.3 20.4 21.1 21.8 22.3 22.8 23.6 24.3 25.2 25.3 24.1 22.6 21
Ozaukee Harrington Beach Park ppb 33.8 32.8 31.5 29.6 27.3 24.4 22.1 20.4 18.9 17.6 16.5 16.2 16.6 18.5 20 21 21.7 22.6 23.4 23.4 23.6 22.5 21.3 20.1
Racine Racine-Payne & Dolan ppb 35.7 33.5 30.7 27.8 25 23.1 21.3 19.3 18.7 19.2 20 20.6 20.5 19.9 20.2 21.3 22.4 23.2 24 25 26.3 27.5 27.7 26.6
Rock Beloit-Converse ppb 32 30.8 29.9 28.8 27.4 25.6 23.9 22.9 22.1 21.5 21.1 20.9 21.2 22.3 23.8 25.1 26.3 27.2 27.5 27.6 28 27.2 25.4 22.8
Sauk Devils Lake ppb 31.7 31 30 29.2 28.3 27 25.9 24.9 23.5 22.2 21.7 21.6 22 22.9 23.8 25.2 26.9 28.2 28.7 28.9 28.5 26.9 24.5 21.7
Sheboygan Sheboygan-Haven ppb 28.2 26.5 25.4 24.1 22.5 20.7 18.6 17.4 17.1 16.1 15.2 14.7 15.2 16.6 18.9 19.9 20.9 22 22.6 22.7 22.4 21.5 20.2 18.6
Sheboygan Sheboygan-Kohler Andrae ppb 36.8 36.2 35.7 34.5 33.1 31.4 28.8 26.1 24 21.8 19.7 18.4 17.4 25.4 24.1 22.9 21.1 19.1
Vilas Trout Lake ppb 16.1 15.7 14.9 14.6 15.3 16.2 17.3 18.7 19.9 20.8 22.5 23.9 24.7 25.3 25.6 25.8 26.6 26.9 25.5 23.3 20.6 18.1 16.3 15.3
Walworth Elkhorn ppb 30.3 29.6 28.9 28.3 27.8 27.4 25.8 25.1 23.6 22.3 21.1 20 19.6 19.8 20.8 21.2 21.6 21.7 21.7 21.5 21.6 21.2 20.4 19.6
Waukesha Waukesha-Cleveland Ave. ppb 29.3 27.8 26.8 25.2 23.9 22.5 21.4 20.5 20 19.7 19.2 19 18.9 19.3 20 20.9 21.6 22.1 22.7 23.1 23.6 23.7 22.8 20.1