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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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Thursday, 
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 22.4 21.5 21 21.5 21.7 21.6 21.3 20.7 20.4 20.5 21.1 22.5 24.5 26.7 28.8 30.9 32.2 32.9 33.3 32.5 31.5 30.8 29.3 28.1
Brown Green Bay UW ppb 24.1 22.8 22.2 21.6 21.1 20.4 19.6 19.1 19.3 19.9 20.7 21.9 22.7 24.8 27.2 29.4 31.1 32.5 33.2 33.3 33.5 32.4 31.2 29.6
Columbia Columbus ppb 23.2 21 19.3 17.7 16 14.5 13.8 13.9 14.9 16.9 19.6 23.2 27.5 32 35.8 38.9 41.3 42.7 42.8 42.2 40.8 39.2 37.3 35.5
Dane Madison East ppb 27.5 25.3 23.3 20.9 19.4 18.1 17.4 16.5 16.5 18.1 20.6 24.7 28.4 32.2 35.5 38.5 40.8 42.4 42.7 42.2 41 39.6 38.3 36.7
Dodge Horicon Wildlife Area ppb 26.6 24.9 23.3 21.5 19.7 18 16.4 16 16.4 17.7 20.2 23.7 27.7 32.2 36.6 39.9 42.6 44.7 45.9 46.1 44.9 42.9 40.6 38.5
Door Newport Park ppb 18.5 18.3 18 18.6 19.9 20.3 20.7 21 21.5 21.8 22.5 23.7 25.1 27 29 30.6 31.8 32.7 33.4 33.7 33.6 33 32.2 31.7
Eau Claire Eau Claire DOT Sign Shop ppb 18.6 14.3 10.9 8.4 7 6.5 8.4 11.1 13.8 16.4 17.8 21.9 25.1 28.1 30.5 32 33.5 35 34.3 33 31.2 29.5 27.5 25.8
Fond du Lac Fond Du Lac ppb 26 24.2 22.9 21.4 19.9 18 16.3 15.4 15.9 17.3 19.5 22.5 26.1 29.7 33.2 36.4 38.9 40.4 40.9 40.4 39 37.5 35.4 33.3
Forest Potawatomi ppb 24.3 23.9 23.7 23.4 23 22.1 21.2 20.4 19.8 19.9 20.4 21 21.9 23.4 25 26.4 27.7 28.8 29.3 29.6 29.6 29.1 28.5 27.7
Jefferson Jefferson-Laatsch ppb 21 19.2 17.8 16.6 15.9 15 14.4 14.3 14.9 16.4 19.2 22.5 26.3 30.6 35 38.4 41.3 42.9 43.1 42.6 41.6 40.2 38.1 36.1
Kenosha Chiwaukee Prairie ppb 22.9 21 19.3 17.8 16.4 15.3 14.7 14.6 15.4 17.1 20.2 24.3 28.9 33.4 37.8 41.7 44.6 46.8 47.4 46.6 45.2 43.6 42 39.9
Kenosha Kenosha-Water Tower ppb 18.9 16.2 13.6 11.5 9.6 8.1 7.4 7.9 9.8 12.4 16.4 21.1 26.4 31.6 36.5 40.8 44.1 46.1 46.1 44.7 42.8 41.2 39.3 36.1
Kewaunee Kewaunee ppb 24.5 23.5 22.3 21.2 20.1 19.3 18.6 18.2 18.4 18.6 19.3 20.5 22.8 25.7 28.6 31.1 32.8 34.5 35.3 35.4 34.6 32.6 30.5 28.4
La Crosse La Crosse DOT ppb 19.1 16.4 14 12.9 12.3 11.6 11.7 12.7 14 16.1 19.2 22.1 25.6 30 34 36.8 38.9 40.1 40.2 39.9 38.9 37.3 35.6 32.9
Manitowoc Manitowoc ppb 14.2 12.4 11.2 11.3 11.4 11.5 11.2 12.5 13.3 14.1 15.9 18.1 21.5 24.4 28.2 30.8 33.1 34.8 35.9 35.9 34.7 33.3 31.4 29.4
Marathon Lake Dubay ppb 30.4 28 25.7 23.6 21.4 19.2 17.5 17 17 17.5 17.7 18.7 21.2 24.3 27.3 29.2 30.6 31.7 33.1 33.6 32.9 31.9 30.5 29
Milwaukee Bayside ppb 19 16.1 13.4 11.4 9.9 8.9 8.9 9.5 11.3 13.9 17.9 22.4 27.5 33 37.6 41.5 44.2 46.1 46.6 46.3 45.5 44 42 40
Milwaukee Milwaukee-16th St. Health Center ppb 19.6 17.5 15.8 15 14.6 13.9 13.2 13.4 14.4 16.5 19.7 23.3 27.4 32.2 37 40.5 43 44.5 44.8 44 42.9 41.5 39.5 37.5
Outagamie Appleton ppb 23.3 22.1 20.8 20.2 19.9 19.1 18.3 18 18.3 19 20.4 22.7 24.1 26.6 29.2 31.5 33.3 34.4 34.8 34.2 34 33 31.6 29.8
Ozaukee Grafton ppb 17.4 16 15.2 15.5 15.6 14.9 14.6 14.8 15.1 16.4 19.3 23.2 27.7 32.9 37.3 40.9 43.6 45.3 45.5 44.6 43.5 41.7 39.5 37.2
Ozaukee Harrington Beach Park ppb 23.3 21.6 20 18.7 17.9 16.9 16.2 16.2 16.5 17.3 19.2 22.1 26 30.2 34.1 37.2 39.6 41.6 42.1 41.4 40 37.9 35.5 33.2
Racine Racine-Payne & Dolan ppb 24.4 22.8 21.1 19.4 17.8 16.1 14.7 14.4 15 14.6 17.9 22.7 27.9 33.4 39 43.7 47 46.9 47.4 46.7 45.4 44 42.1 39.9
Rock Beloit-Converse ppb 17 14.2 11.9 10.3 9.3 8.5 8 8.5 10.3 13.5 17.5 22.1 27 32.3 36.9 41.1 43.6 44.6 44.7 43.9 42.3 40.6 39 36.8
Sauk Devils Lake ppb 22.9 19.9 16.9 14.6 12.6 12.6 13.2 14.3 15.8 18.1 21.6 25.5 29.5 32.4 35.2 37.8 40.3 42.1 42.8 42.7 42 41.4 40.6 39.5
Sheboygan Sheboygan-Haven ppb 18.5 17.4 16.3 15.4 15.1 14.8 14.5 14.6 15.2 16.3 18.4 21.4 25.2 28.8 32 34.6 36.8 38.2 38.4 37.8 36.3 34.6 33.2 31.6
Sheboygan Sheboygan-Kohler Andrae ppb 15.6 14.1 12.9 12.5 12.9 13.3 13.2 13.6 14 14.6 16.3 18.8 22.2 26.9 30.5 33.6 36.4 39.1 40.3 40.3 39.2 36.4 34.5 32.3
Vilas Trout Lake ppb 25 24.3 24 23.8 23.1 22.2 21.1 20.4 19.9 19.7 20.1 20.7 22.2 24.3 26.4 28.1 29.8 31.2 31.9 32.1 31.6 30.8 30 29.5
Walworth Elkhorn ppb 19.2 17 15.8 15.1 14.5 13.7 13.2 13.8 15.2 17.4 20 23 26.4 30.8 35 38.3 41 42.7 43.1 42.7 41.9 40.3 38.5 36.7
Waukesha Waukesha-Cleveland Ave. ppb 19.2 16.5 14.3 12.5 11 9.4 8.9 8.8 10.2 12.6 16.3 20.4 24.7 29.8 34.3 38.1 40.9 42.4 42.9 42.7 41.7 40.2 38.4 36.8