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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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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 16.4 15 14 14.1 15 16.2 17.2 17.9 18.7 20 21.7 23.7 25.6 27.3 29.2 31 32.4 33 32.6 32.4 32.3 31.9 31.1 30.4
Brown Green Bay UW ppb 26.7 24.3 22.3 20.4 18.8 16.3 13.7 12.7 12.7 13.8 15.8 19.4 22.9 27.6 32.9 34.8 38.6 40.2 41.1 40.1 39.2 37.5 35.1 32.3
Columbia Columbus ppb 23 20.7 19.2 17.7 16.7 15.9 15.3 15.7 16.6 18.2 20.5 23 25.2 28.4 31.9 35.5 39.4 41.9 44.1 46 47.7 48.2 48.1 46.9
Dane Madison East ppb 26 23.5 20.8 18.3 16.7 14.6 13.4 12.5 12.2 13.6 16.2 20 24.4 29 33.6 37.8 40.9 43 44.5 43.4 39.6 34.8 29 22.1
Dodge Horicon Wildlife Area ppb 26.8 24.4 22.7 20.9 19.4 18 17.1 17.1 17.3 18.6 20.3 22.6 25.2 27.9 30.8 33.2 35.1 36.4 36.8 36 35.9 35.3 34.4 31.7
Door Newport Park ppb 26.1 22.9 20.2 17.9 15.4 13.9 13 13.8 15.6 17.8 20.1 20.7 22.1 25 28.2 31.1 32.7 33.5 33.5 33.3 32.9 32.8 32.3 31
Eau Claire Eau Claire DOT Sign Shop ppb 11.1 7.5 4.5 2.3 1 0.7 0.6 0.6 3.5 7.5 11.8 16.2 20.8 25.2 29.6 30.1 32 33 32.8 30.8 27 23.2 19.3 15.1
Fond du Lac Fond Du Lac ppb 26.3 24.9 23.5 22.3 21.2 19.9 18.4 17.5 17.1 17.4 18.5 20.4 22.7 25.9 29.3 32.2 34.5 36.1 36.6 37 36.1 34 31.8 30.2
Forest Potawatomi ppb 22.9 20.7 18.6 16.9 15.7 15.2 14.8 15 16.2 18.1 20.4 22.4 24.5 26.2 28 29.3 30.2 30.3 30 29.6 29.2 28.7 28.4 28.3
Jefferson Jefferson-Laatsch ppb 22.2 19.7 18.2 17.1 15.7 14.3 14 14.1 14.3 15.4 17.5 20 23.2 27.3 31 34.3 37.2 39.5 40.6 38.2 34.8 30.1 24.7 19.1
Kenosha Chiwaukee Prairie ppb 29 25.6 22.5 20.1 18.4 16.6 15 14 14 15.5 18 20.8 23.7 27.2 31.2 32.6 35.8 38.3 39.3 38.7 36.8 33.5 29.9 25.8
Kenosha Kenosha-Water Tower ppb 26 21.6 18.2 14.9 12.1 9.3 7.1 5.7 6.6 10 13.1 17.4 22.3 27 31.6 32.7 35.7 37.7 39 39.6 39.3 39 38.5 37
Kewaunee Kewaunee ppb 27.9 25.4 23 20.9 19 17.1 15.7 14.7 14.1 15.6 17.6 20.2 23 26.3 29.6 30.2 30.4 30.7 30.9 30.4 30.1 29.5 28.9 27.4
La Crosse La Crosse DOT ppb 21.3 18 14.7 11.2 9 7.9 7.1 6.4 6.1 7 9.3 13.1 17.5 21.6 25.4 29.2 32.9 35.8 37 36 34 31.2 28.5 25.2
Manitowoc Manitowoc ppb 26.7 22.8 19.6 16.9 14.6 12.6 11.2 10.9 11.6 14.1 16.5 19.2 21.9 24.9 27.8 29.9 30.8 31 30.4 28.1 25 21.9 18.6 15.6
Marathon Lake Dubay ppb 26 23.8 21.8 19.8 18.3 17.1 15.4 14.1 14.7 15.9 17.8 20.1 22.6 24.9 28.1 30.9 31.9 32.3 31.7 31 30.4 30.2 29.9 29.3
Milwaukee Bayside ppb 21.5 18.5 16 14.3 13.6 13.2 13.8 15.1 16.7 18.5 20.8 23.5 25.7 28.1 30.4 32.1 33.5 34.5 34.9 34.7 33.7 31.8 28.8 25.4
Milwaukee Milwaukee-16th St. Health Center ppb 26.4 24.4 22.9 21.8 21.1 19.8 18.5 17.7 17.8 18.5 19.4 20.9 23.1 25.6 28.1 30 31.3 32.3 32.9 32.4 31.2 29.6 27.2 24.2
Outagamie Appleton ppb 28.1 25.8 23.5 21.2 19.1 17.1 15.7 14.8 14.9 16 18.5 22.2 26.3 30.9 35.5 35.8 37.5 38.7 38.3 35.6 31.9 27.8 23.9 20.3
Ozaukee Grafton ppb 26.9 24.9 22.9 21.1 19.3 17.6 16.3 15.7 15.9 16.9 18.8 21.4 23.9 26.9 30.4 33 35 36.5 37.3 37.9 36.6 32.4 27.9 23.9
Ozaukee Harrington Beach Park ppb 26.3 24.3 22.5 21.1 19.6 18.2 17 16.5 16.6 17.5 19 20.8 22.9 25.3 27.7 30.1 32.1 33.2 33.8 34.2 33.3 32.4 30.6 27.9
Racine Racine-Payne & Dolan ppb 31.3 29.2 26.9 24.7 22.6 20.4 18.3 18.1 18.1 18.6 20.1 22.2 25 28.4 32.1 34.1 36.2 38 39.1 39.5 39.5 38 35.3 31.8
Rock Beloit-Converse ppb 18 13.9 10.1 8 7.3 6.6 6.7 8.5 10.7 13.3 16.7 20.4 23.4 27.2 31.2 34.5 37.5 39.8 41.4 38.8 34.9 30.5 25.3 19.6
Sauk Devils Lake ppb 14.2 11.8 11.3 10.4 9.9 9.6 9.7 11 12.7 14.8 17.2 20.8 24.3 27.9 31.5 33.7 35 34.9 33 30.3 27.6 25.1 22.4 20
Sheboygan Sheboygan-Haven ppb 25.1 23.2 21.6 20.2 19.1 17.9 17 16.4 16.3 17.2 18.5 20.1 22.3 25.3 28.2 29.1 31.3 33.1 34 34 33.3 31.6 29.1 25.8
Sheboygan Sheboygan-Kohler Andrae ppb 20 17.5 15.6 14.9 14.3 14.1 13.9 14.4 15.5 17.1 19.3 21.9 24.7 27.5 30.4 32.6 34.1 35.6 36.4 35.6 33.7 31.6 28.5 24.9
Vilas Trout Lake ppb 19.4 18.2 16.9 16.5 16 15.5 15 14.8 14.9 15.8 15.9 15.9 19 22.7 25.8 28.5 30.5 31.5 31.5 31.3 31.1 30.9 30.7 30.5
Walworth Elkhorn ppb 28.3 26.1 24.6 23.7 22.6 21 19.4 18.5 17.8 18.5 19.1 20.5 23 26.3 29.4 32.5 35.4 37.6 38.7 38.9 38.9 38.3 37.7 36.2
Waukesha Waukesha-Cleveland Ave. ppb 23.2 20.2 17.9 16.6 15.4 13.8 12.9 12.8 14.1 16.6 19.6 23.2 27.3 32.2 36.8 40.4 42.7 43.7 43.8 42.2 39.8 36.2 32 27.5