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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/29/2025 08:30 to 7/31/2025 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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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 14.8 12.6 10.6 8.3 6.1 4.9 4.9 6.4 8.2 10 11.5 13.6 15.9 18.4 20.5 21 20.8 20.6 19.9 19.2 18.5 18.1 17.9 18
Brown Green Bay UW ppb 19 18.2 17.3 16.2 15.4 15 14.5 14.2 14.3 15.2 16.8 18.4 19.9 21.3 22.8 23.9 24.4 24.4 24.1 23.6 23 22.3 21.7 21
Columbia Columbus ppb 15.2 14 12.8 11.7 10.9 10.2 9.6 9 8.9 9.5 10.3 11.6 12.2 15.2 18.3 21.5 24.4 26.5 28.3 29.7 29.8 30.1 29.8 29.7
Dane Madison East ppb 14.4 13.4 12.3 11.6 11.2 10.5 9.9 9.4 9.3 9.6 10.3 11.5 13.2 15 17.3 20.2 22.4 23.6 24.3 24.4 24.1 24.2 24.6 25.7
Dodge Horicon Wildlife Area ppb 16.5 15.4 14.3 13.4 12.6 11.9 11.4 11.1 10.9 11.5 12.3 13.5 15.1 16.9 18.8 20.9 23 25 27 28.6 29.9 31.2 32.2 32.1
Door Newport Park ppb 14.6 14.1 13.9 14.5 15.8 17.1 18.2 18.8 19.5 20.7 22.3 23.3 24.4 25.8 27.2 28.9 30.2 30.9 31.5 32.1 31.7 30.7 29.7 28.4
Eau Claire Eau Claire DOT Sign Shop ppb 12.3 12.2 12 12 12.2 12.6 12.8 12.9 13 13.5 14.3 15.2 15.8 16.4 17.1 17.6 18 18.1 17.9 17.6 17.9 18.5 19.1 20
Fond du Lac Fond Du Lac ppb 16 15.6 14.7 14 13.3 12.7 12.4 12.1 12.2 12.7 14.3 15.6 17.3 19.1 20.6 22.3 23.9 25.2 26.2 27.1 27.6 28.3 29.2 29.6
Forest Potawatomi ppb 15.8 15 14.4 14.3 14.2 13.9 13.9 13.7 14 14.8 15.8 16.6 17.5 18.6 19.3 20.2 20.9 21.4 21.9 22.2 22.5 22.8 23 23
Jefferson Jefferson-Laatsch ppb 15.4 14.4 13.4 12.6 12.3 12.2 12 12 12 12.4 13.1 14.2 15.6 17.1 19.1 21.3 23.5 25.7 27.6 29 29.8 30.6 30.5 30.2
Kenosha Chiwaukee Prairie ppb 23.9 25 25.6 26.3 26.4 26.1 25.4 24.7 23.8 22.8 22.3 21.8 22 22.8 24.7 27.2 29.7 32.4 34.9 37.3 39.3 40.5 40.7 39.9
Kenosha Kenosha-Water Tower ppb 19.8 20.1 21.1 22.2 22.7 22.4 21.2 19.6 18.4 17.7 16.9 15.9 15.5 16.7 19.2 22.9 26 28.6 30.8 33.4 35.8 37.7 38.5 37.9
Kewaunee Kewaunee ppb 23 22.4 21.8 21.1 20.5 20 19.6 19.6 20.2 21 21.7 22.6 23.5 24.6 25.6 26.1 26.5 26.6 26.6 26.4 25.9 25.3 24.7 24.6
La Crosse La Crosse DOT ppb 14.3 14.6 15.3 16.1 16.3 16.1 16.3 16.5 16.8 16.9 16.6 16.2 16.2 16.6 17.1 17.9 19.1 20.6 22.3 24 26.1 29 31.6 33.7
Manitowoc Manitowoc ppb 17.5 17.2 16.8 16.8 16.9 16.9 17.6 18.8 19.1 19.4 20 20.7 21.5 22.2 23.1 23.8 24.3 24.7 24.7 24.5 24.3 23.8 23.2 22.8
Marathon Lake Dubay ppb 19 19.1 19.1 18.8 18.3 17.8 17.4 17 16.5 16.2 16.4 16.8 17.4 18.2 18.7 19.1 19.7 20.3 20.7 21 21.5 21.6 22 22.8
Milwaukee Bayside ppb 19.6 19.6 19.1 18.7 18.4 18.7 18.8 19.5 19.8 19.4 19.3 19 19 19.4 20.6 22.3 24.1 26.2 27.9 29.4 31.1 33.1 34.5 35.1
Milwaukee Milwaukee-16th St. Health Center ppb 18.4 18.7 18.7 18.4 17.7 16.9 16 15.5 14.9 13.3 12.1 11.6 12 13.1 15.1 16.9 19 21.2 23.4 26 28.6 30.4 31.7 32.6
Outagamie Appleton ppb 18.1 17.3 16.4 15.7 15 14.2 13.3 12.6 12.6 13 13.6 14.6 16.2 17.9 19.7 21.1 22 22.7 23.2 23.3 23.1 22.9 23.1 23.4
Ozaukee Grafton ppb 18.6 16.6 14.4 12.1 10.7 10.6 11 11.8 12.5 14.3 16.3 18.4 19.7 20.9 22.6 24.1 25.7 27.8 29.3 30.3 31.1 31.8 32.8 33.8
Ozaukee Harrington Beach Park ppb 20.1 19.8 19.6 19.4 19.1 18.9 18.8 18.9 18.8 18.9 19.1 19.6 20.2 21.2 22.2 23.5 25.2 26.8 27.9 28.4 28.4 28.1 28.4 29.3
Racine Racine-Payne & Dolan ppb 20.2 20.6 20.8 20.9 21 21.2 21.5 21.1 20.5 20 19.6 19.5 19.9 21.2 23.1 25.5 28 30.5 33.2 35.8 37.9 39 39.5 39.5
Rock Beloit-Converse ppb 15.8 15.1 14.7 14.4 14.5 14.7 14.8 14.7 15.2 16.1 16.1 16.2 16.6 17.4 18.5 20 21.6 22.4 22.6 22.3 22.1 22.5 23.6 24.7
Sauk Devils Lake ppb 15.1 15.3 15.5 15.9 16.2 16.6 16.6 16.6 16.4 16.4 16.6 16.9 17.1 17.4 18.7 20.2 21.7 23.3 24.4 25.1 25.5 26.3 26.7 28.5
Sheboygan Sheboygan-Haven ppb 17.2 17 16.4 15.7 15 14.5 14.5 14.8 15 15.2 15.8 16.7 17.4 18.6 19.9 21.2 22.4 23.4 23.9 24.3 24.5 24.4 24.2 24.4
Sheboygan Sheboygan-Kohler Andrae ppb 22.5 22.4 22.1 21.9 21.6 21.4 21.3 21.2 21.1 21.1 21.4 21.9 22.6 23.6 24.7 25.7 27.2 28.4 29.1 29.6 29.6 29.3 28.6 28.5
Vilas Trout Lake ppb 12.7 12.2 12 11.6 11.4 11.2 10.8 11 11.7 13 14.8 16.7 18.2 19.4 20.3 20.9 21 20.9 21 21.2 21.3 21.5 21.8 22.2
Walworth Elkhorn ppb 16.3 15.8 15.6 15.3 15.4 15.5 15.5 15.3 15 15.2 15.7 16.9 17.9 19 20.1 21.6 23.4 24.8 26.3 27 27.7 28.1 28 27.9
Waukesha Waukesha-Cleveland Ave. ppb 15.2 13.9 13.1 11.7 10.8 10 9.2 8.6 8.3 8.4 8.3 9.5 10.5 12.4 14.8 17.8 20.6 23 25.6 27.6 29.3 30.8 31.8 32