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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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Saturday, 
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 16.7 13.6 10.9 8.4 6.3 5.6 6.7 8 10 12.8 15.5 18.5 21.5 24.4 26.1 27.6 28.6 29.1 28.7 26.7 23.8 20.9 18.4 16
Brown Green Bay UW ppb 16.8 16 15.3 15.5 15.4 15 15 15.3 16 16.9 18.7 20.1 22 23.9 25.7 27.2 28 28.5 28 26.8 26 24.7 23.1 21.2
Columbia Columbus ppb 22.6 20.9 19.3 18 17.2 17 16.5 16.1 16.5 17.6 19.6 21.9 24.2 26.7 29.4 31.8 33.6 34.6 34.5 33.2 31.6 30.2 28.7 27.1
Dane Madison East ppb 20.1 17 14 11.8 10 8.6 8.1 8.5 9.5 12.3 15.7 19.3 23.3 27.7 31.1 33.3 34.9 35.5 35.3 34.4 33 31 28.9 26.9
Dodge Horicon Wildlife Area ppb 20.6 18.8 17.5 16.5 15.8 15.1 14.5 15.3 16.3 18.3 20.4 22.8 25.2 27.8 30.4 32.2 33.6 34 33.9 32.8 31.5 30.2 28.6 27.6
Door Newport Park ppb 18.9 18.8 19.3 19.5 19.4 19.4 18.8 18.5 18.6 19 19.8 21.5 23.4 25 26.4 27.4 28 28.4 27.5 26.5 26.1 26.1 26.1 25.6
Eau Claire Eau Claire DOT Sign Shop ppb 13 10.7 9.2 9.2 10.1 10.9 12.3 13.8 14.9 16.3 17.8 19.4 21 22.9 24.7 26.6 28.4 29.6 29.6 27.9 25.6 22.5 20.2 18.4
Fond du Lac Fond Du Lac ppb 17.9 17.5 17.3 17.3 17.2 16.9 16.4 16.5 17 18.1 19.4 21.1 22.8 24.7 26.8 28.6 29.6 29.7 29.4 28.6 27.7 26.3 25.1 23.5
Forest Potawatomi ppb 19.7 18.1 17.2 17.2 17.4 17.7 17.9 18.1 19.3 20.6 21.5 22 22.8 23.5 24.5 25.6 26.1 26 25.9 25.9 25.7 25.5 25.3 24.9
Jefferson Jefferson-Laatsch ppb 18.3 15.4 12.7 10.5 8.5 6.6 6.4 7.5 9 11.5 14.6 17.8 21.5 25.3 28 30.2 32.2 33.1 33.2 32.9 32.1 30.2 27.6 24.2
Kenosha Chiwaukee Prairie ppb 27.9 27.8 26.3 26.6 26.9 26.8 26.6 26.3 26.3 26.5 28.2 28 28.1 28.4 29.4 31 32.3 33.7 34.7 36.1 37 37.4 37.2 37.2
Kenosha Kenosha-Water Tower ppb 17.6 15.1 12.7 10.2 7.6 7.4 8.7 10 12.7 15.4 18.2 21.4 24.8 26.7 27.9 29.7 31.3 32.7 33.9 35 35.9 36.2 36 35.4
Kewaunee Kewaunee ppb 21.8 22 22.1 22.6 23.3 23.9 24.1 23.8 23.7 23.7 23.8 24 24.3 25.1 25.9 26.7 27.2 28 28.7 29.4 29.7 29.9 30 30
La Crosse La Crosse DOT ppb 27.8 27.1 26.4 26.3 25.6 23.8 22.4 21.2 20.5 20.3 20.9 22.1 24.1 26.8 29.3 31.5 33.3 34.8 35.3 34.4 33.9 33.7 33.4 32.9
Manitowoc Manitowoc ppb 12.1 9.7 7.9 6.7 6 5.4 5 6.1 8.1 10.4 13.1 16.1 19.2 22.4 25.7 27.4 28.4 29 28.9 26.7 24.8 22.4 19.9 18.4
Marathon Lake Dubay ppb 23.4 21.9 20.9 19.7 18.5 17.3 16.2 15.7 15.9 16.8 18.1 19.9 21.8 24.2 27 29.2 30.9 32 32.8 33.1 33 32.4 31 29.5
Milwaukee Bayside ppb 23.7 23.8 23.8 22.6 20.7 19.8 20.8 20.7 20.8 21 21.3 22.9 25.3 27.9 28.8 29.8 30.5 31 31.5 31.9 32.2 32.1 31.8 31.2
Milwaukee Milwaukee-16th St. Health Center ppb 15.7 14 12.3 10.5 8.4 6.9 6.3 7.9 10.1 12.2 14.6 17.3 20.2 23.7 27.1 28.5 29.4 30.1 30.6 30.6 30.8 30.7 30.3 29.4
Outagamie Appleton ppb 16.2 14.3 12.7 11.6 10.8 11 11.3 11.7 12.1 13.9 16.3 19.1 22.2 25 27.6 30 32 32.9 32.8 31.8 30.1 28.3 26.2 23.8
Ozaukee Grafton ppb 18.7 17.5 16.4 15.3 14.2 13.6 13.7 15.2 16.7 18.3 20.1 22.3 24.9 28 30.5 31.4 32.1 32.6 32.9 32.8 32.5 32 31.3 30.8
Ozaukee Harrington Beach Park ppb 18.5 18.6 18.6 18.2 17.7 17.1 17.7 18.7 18.8 19.2 19.9 22.1 24.3 26.6 28.1 28.9 29.4 29.5 29.4 29 29 29.1 28.8 28.5
Racine Racine-Payne & Dolan ppb 25.9 25.8 25.7 26.1 26.3 26.4 26.3 26.2 26.4 26.9 27.5 27.4 27.6 28.4 29.8 31.6 33 34.2 35.2 36 36.5 36.4 35.6 34.4
Rock Beloit-Converse ppb 21.2 18.4 16.1 14.4 13.1 12.2 11.9 12.2 13.4 16 19.1 22.4 25.8 29.3 32.6 35.4 36.9 36.9 36 34.8 33.4 31.4 29.2 27.1
Sauk Devils Lake ppb 24.5 23.2 22.8 22.4 21.2 18.9 18 17.9 18 18.8 20 22.2 25.1 28.4 31.1 33.3 35.2 35.7 35.6 35 34.4 33.3 32.1 30.7
Sheboygan Sheboygan-Haven ppb 16.7 14.9 13.6 13.4 12.8 11.8 10.9 11.4 12.8 15 17.3 18.9 21.1 23.7 26.4 28 28.7 28.9 28.4 27.9 27.4 26.8 26.3 25.4
Sheboygan Sheboygan-Kohler Andrae ppb 25.5 25.5 25.3 25.2 24.9 24.4 23.8 23.5 23.8 24.3 25.3 26.3 27.3 28.3 29.4 30.3 30.7 31 30.9 31 31.1 31.1 30.9 30.7
Vilas Trout Lake ppb 14.3 12.7 11.3 10.5 10.2 9.6 9.2 9.5 10.7 12.4 14.7 17.1 19.7 22.4 24.6 26.2 27 27.2 26.8 25.4 23.6 21.9 20.9 20.2
Walworth Elkhorn ppb 19.3 17.3 16 15.2 14.9 14.7 14.7 14.8 15.9 17.4 19.1 21 22.9 24.6 26.4 28.2 29.6 30.8 31.4 31.5 31.4 31.1 30.6 29.8
Waukesha Waukesha-Cleveland Ave. ppb 17.5 15.8 14.6 13.8 12.6 11.3 10.6 10.4 11 12.8 15 17.5 20.5 23.8 26.5 29 30.9 32 32.3 31.7 30.2 28.5 26.2 23.6