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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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Sunday, 
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 26.9 24.9 22.7 21.9 21.4 20.8 19.1 17.5 16 15.7 16.9 19.1 21.4 23.1 25.4 27.5 29.3 29.6 29.3 27.2 24.7 22.5 20.3 18.3
Brown Green Bay UW ppb 32.6 31.7 30.4 29.6 29.1 28.9 28.9 28.8 28.6 28.9 30.4 31.9 33.5 34.9 36.1 37.2 38.1 38.1 37.2 35.8 34.2 32.6 31.1 29
Columbia Columbus ppb 28.5 26 24.3 22.9 22 21.1 22.3 24.8 27.1 29.7 32 34.2 36.3 38.3 38.6 37.9 37.8 37.2 35.6 34 32.1 30.1 28.1 25.5
Dane Madison East ppb 31.8 30.2 28.5 27.4 26.5 27.1 28.8 31.2 33.1 34.6 36.1 37.9 39.5 39.8 39.6 38.9 38.3 37.7 37.1 36 34.1 31.8 29.3 27.5
Dodge Horicon Wildlife Area ppb 33.9 30.9 28.4 26.6 25 23.7 23.1 24.4 26.5 28.6 30.9 33.4 35.7 37.7 39.7 40 39.5 39.2 37.9 36.8 35.3 33.7 31.4 28.9
Door Newport Park ppb 37 35.9 35.3 34.6 33.7 32.6 33.1 33.3 33.3 33.4 33.3 34 34.8 36.3 37.6 38.5 39 39.3 39.4 38.5 37.4 35.4 32.8 29.5
Eau Claire Eau Claire DOT Sign Shop ppb 25.3 23.6 22.7 22.3 22.9 23 24.9 26.2 27.2 28 28.6 29.7 30.7 33 33.6 34.2 34.8 34.6 33.7 31.5 28.6 24.5 20.1 15.5
Fond du Lac Fond Du Lac ppb 32.1 29.6 27.6 25.7 24.3 23 21.8 22.3 24.3 26.2 28.5 31 32.8 34.9 37.1 37.9 37.5 37.3 36.3 34.7 33.1 31.2 29.5 27.9
Forest Potawatomi ppb 32.7 32.4 32.1 31.6 30.7 29.4 27.9 25.8 24.7 24.6 24.8 25.2 26.3 27.7 29.6 31.7 32.7 32.6 32.3 31.6 30.3 28.8 26.9 24.8
Jefferson Jefferson-Laatsch ppb 31.3 27.7 24.6 22.8 21.7 21.4 23.2 25.9 28.3 30.8 33.3 35.5 37.7 39.7 40 39.6 39.7 39.5 38.1 36 33.6 30.8 27.6 24.7
Kenosha Chiwaukee Prairie ppb 26.5 22.7 18.5 15.1 12.5 12.4 13.2 16.1 19.4 23.7 28.3 32.5 36.3 39.7 42.9 44.2 44.6 44.3 43.3 41.6 39.4 36.9 34.6 31.9
Kenosha Kenosha-Water Tower ppb 30.5 27.9 24.6 22.3 20.4 19.5 18.9 20.7 23.2 25.4 28.9 32.1 35.5 38.5 41.4 42.4 42.6 42.9 42 40.3 37.6 35.1 32.7 29.5
Kewaunee Kewaunee ppb 36.3 35.6 35.1 34.8 35 35.8 35.9 35.4 34.7 33.8 34.1 35.4 36 35.7 36.1 37.1 38.1 38.9 38.5 37 35.5 34 32.2 30.4
La Crosse La Crosse DOT ppb 33.2 32.5 31.8 32.7 34 35.2 36.2 36.8 37.3 37.4 37.7 36.8 36.4 36.3 36.3 36.2 36 36 36 35.7 33.5 30.3 27.1 24.2
Manitowoc Manitowoc ppb 34.3 33.8 32.3 31.4 32 35 34.9 33.3 31.8 31 31.9 33.4 34.1 34.2 35.4 36.9 38.3 39.2 38.8 37.6 36 34.3 32.1 29.5
Marathon Lake Dubay ppb 30.8 28.8 27.7 26.6 25.3 24.7 24.9 25.5 26.9 27.8 28.4 29.4 31 32.1 33 33.8 33.8 34.2 34.4 34.2 33.2 31.9 30 28
Milwaukee Bayside ppb 32 28.5 24.9 21.9 19.9 19.4 18.8 19.4 22.2 25.1 28.1 31.1 34 36.7 39.3 40.8 40.7 40.2 39.5 37.8 35.2 32.1 28.3 24.8
Milwaukee Milwaukee-16th St. Health Center ppb 30.7 27.8 25.5 23.7 21.9 20.9 20.7 22.6 24.8 26.6 29 31.6 34.6 37.2 39.7 40.5 40.4 40.7 40 38.4 35.9 33.4 31.2 28.8
Outagamie Appleton ppb 31.3 29.1 27.1 25.2 23.5 22.3 22.2 23.1 24.9 26.3 27.8 29.6 32 34.2 36.1 37.5 37.9 37.8 37.2 36.5 35.5 34.2 32.3 30.3
Ozaukee Grafton ppb 40.4 36.4 32.1 28 25 22.9 21.5 21.1 23.1 25.4 28.1 31.1 33.7 36.3 38.7 40.3 40.2 39.8 38.9 37.1 35.5 33.5 31.3 29.1
Ozaukee Harrington Beach Park ppb 39.9 39.2 38 35.9 33.4 31.1 29.2 27.6 28.1 28.2 29.5 30.7 32.6 34.8 36.5 38.4 38.6 38.3 37.1 35.6 33.8 31.9 30.2 28.2
Racine Racine-Payne & Dolan ppb 34.1 31.7 29.1 26.8 25 23 21.9 22.3 24.2 26.9 30.6 33.9 36.8 40.1 42.4 43.7 44 43.9 42.9 41.8 40.4 38.1 36 33.6
Rock Beloit-Converse ppb 28 25.5 23.7 22.6 22.1 22 24.7 26.5 28.5 30.6 32.6 35.1 37.6 40 39.6 39.4 39.3 39 38.5 36.1 33.6 30.7 26.9 22.4
Sauk Devils Lake ppb 29.2 27.7 27.5 28.2 28.3 27.5 28.1 29.8 31.4 33.1 34.2 35.1 36.2 37.6 37.5 36.6 36.1 34.9 32.4 29.6 26.6 23.7 20.5 17.4
Sheboygan Sheboygan-Haven ppb 32.6 31.4 29.9 28.7 27.9 27.4 26.3 25.3 25.8 26.8 27.6 29.5 31.2 32.9 34.5 36.2 36.4 36.1 35.9 34.4 32.5 30.5 28.7 26.9
Sheboygan Sheboygan-Kohler Andrae ppb 44.3 43.9 43.6 43.2 42.1 40 37.8 35.1 33.6 33.7 34.4 34.9 35.6 36.8 38.1 39.7 40.3 39.3 37.2 33.8 31.2 28.2 25.2 22.4
Vilas Trout Lake ppb 26.5 23.7 23 22.6 22.1 22.2 22.9 23.3 24 25 26.4 27.9 29.4 30.7 31.4 32.3 33 33.3 32 29.5 27 24.3 22.5 20.9
Walworth Elkhorn ppb 24.8 22.7 21.4 20.6 20.7 20.8 21.9 24.7 27.3 29.3 31 32.8 34.8 36.8 37.9 37.3 37 37.5 37.5 36.6 34.8 33.3 31.8 30
Waukesha Waukesha-Cleveland Ave. ppb 30.7 27.8 24.9 23.1 22.3 21.6 21.7 23.6 25.5 27.4 29.7 31.8 33.9 36.2 38.5 38.4 38.3 38.4 38.2 36.9 35 32.5 29.3 26.4