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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/2/2025 12:00 to 8/3/2025 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,Iowa,Green Lake,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lafayette,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sawyer,Sauk,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

8-HR Ozone Summary

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Wednesday, 
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 31.2 27.4 23.2 19.7 17.1 14.3 11.7 13.5 16.5 20.5 24.8 29.1 33.2 37.2 40.2 41.5 42.2 42.6 42.9 42.9 41 38.5 36 33.1
Brown Green Bay UW ppb 40.8 40.9 41.3 41.9 42.4 42.3 42.2 41.8 41.6 41.8 42.1 42.6 43.2 44 45 45.7 46.2 46.5 46.3 45.7 44.9 44 42.9 42.1
Columbia Columbus ppb 37.1 36.2 34.6 33.4 32.9 32 31.6 32.3 33.4 34.4 35.7 37.2 38.7 40.8 43.2 45.8 47.3 48 48 47.5 46.6 45.6 44.1 41.5
Dane Madison East ppb 36.4 35.5 34.1 33 31.8 30.5 30.3 30.8 32.3 33.2 34.1 35.3 36.8 39.5 42 44 45.3 46.5 47.2 46.9 46.3 45 43.1 41.1
Dodge Horicon Wildlife Area ppb 34.1 32.5 30.9 29.7 28.8 28.2 28.4 28.8 30.1 32.1 34.5 37 39.6 42 44.4 46.3 47.3 47.6 47.6 47.3 46.8 46.3 45.3 44.3
Door Newport Park ppb 41.3 41.5 41.4 40.9 40.2 39.5 38.8 38.4 38.2 38.6 39 40.1 41.3 42.6 43.9 45 45.9 46.6 47 47 46.8 46.6 46.4 46.4
Eau Claire Eau Claire DOT Sign Shop ppb 31 30.2 26.4 22.7 19.4 16.1 12.8 12.3 14 17.2 21.3 26.2 30.9 35.9 40.1 42.1 42.9 43.7 44 43.7 43.4 42.9 42.6 42.2
Fond du Lac Fond Du Lac ppb 34.9 34.6 34.2 33.5 32.7 31.1 30.9 32.1 33.3 34.5 35.9 37.6 39.7 42.5 44 44.9 45.4 45.7 45.7 45.3 44.8 44.2 43.5 42.7
Forest Potawatomi ppb 41.5 42 42.2 42.1 41.6 41.2 40.8 40.5 40.6 40.8 41.3 41.8 42.5 43.5 44.5 45.4 46 46.5 46.6 46.7 46.7 46.5 46.1 45.5
Jefferson Jefferson-Laatsch ppb 33 31.7 29.9 28.8 27.4 26 25.4 26.5 28.2 29.7 31.3 33 35.7 38.8 41.7 43.4 44.5 45.3 45.2 44.9 44.5 43.7 42.6 41.3
Kenosha Chiwaukee Prairie ppb 36.6 35.1 33.6 32.1 31.8 30.3 28.8 28.5 29.7 31.6 34 36.4 37.2 39.5 41.7 43 43.4 43.5 43.6 43.7 43.9 44.1 44.2 44.4
Kenosha Kenosha-Water Tower ppb 35.2 33.4 31.6 30.6 30.1 29.3 28.1 28.4 29.6 31.6 33.7 35.7 37.6 40 42.5 43.6 44.4 44.7 44.8 44.7 44.5 44.5 44.3 43.9
Kewaunee Kewaunee ppb 40.3 40.4 40.8 41.3 41.9 41.7 41.3 41.1 41 41.1 41.2 41.5 41.6 42.4 43.3 44 44.6 45 45.3 45.3 44.9 44.1 43.4 42.6
La Crosse La Crosse DOT ppb 32.6 31.1 29.9 27.3 25.9 24.9 24.3 25.1 25.8 27.5 28.3 30.8 34.5 38.4 40.6 42.2 43.1 43.9 44.6 45 45.1 45 45 44.9
Manitowoc Manitowoc ppb 36.4 36.4 36.8 37.2 37.9 38.6 39.2 39.5 39.4 39.5 39.7 40 40.4 40.7 41.1 41.5 42 42.4 42.7 42.9 42.9 42.9 43 43
Marathon Lake Dubay ppb 39.8 39.8 39.7 39.6 39.4 39.2 38.7 38.6 39 39.7 40.5 41.5 43 44.8 46.7 47.9 48.8 49.4 49.7 49.9 49.7 49.1 47.9 46.6
Milwaukee Bayside ppb 35.5 35 33.1 31.7 30.5 28 25.9 25.8 27.4 29.3 31.7 33.9 36.2 39.5 42.7 44.3 45.2 45.8 46.1 46.2 46.3 46.3 46.2 46
Milwaukee Milwaukee-16th St. Health Center ppb 29.2 28.6 27.3 26.3 24.6 22.1 20.2 20.4 21.6 23.2 24.8 26.4 28.9 32 34.6 35.6 36.2 36.6 36.7 36.7 36.1 35.7 35.3 35
Milwaukee Milwaukee-UWM UPark ppb 35.7 35.1 33.4 32 31.1 29.4 26.5 26.1 27.4 29 30.9 32.8 34.6 37.1 40.8 42.4 43.1 43.5 43.7 43.8 43.8 43.7 43.4 43.2
Outagamie Appleton ppb 40.2 40.3 40.7 41.2 40.9 39.7 39.5 39.3 39.2 39.7 40 40.3 41.3 43.5 44.9 45.9 46.9 47.4 47.3 47.1 46.6 45.9 45.1 44
Ozaukee Grafton ppb 34 33.5 32.8 32.6 33 32.8 32.7 33.9 35.3 36.1 37.7 39.3 40.2 41.7 43.3 44.3 45.3 45.9 46 46 45.7 45.5 45.2 44.5
Ozaukee Harrington Beach Park ppb 33.7 32.9 33.1 33.9 34.6 35.3 36.4 38.1 40 40.7 41.7 42.3 43.3 44.6 45.7 46.5 47 47.2 47.3 47.2 46.8 46.3 45.9 45.5
Racine Racine-Payne & Dolan ppb 37 36.4 34.7 33 31.9 29.7 28.2 28.2 29 30.6 32.6 34.9 37.3 40.1 42.4 43.4 43.8 44.3 44.6 44.9 45.1 45.3 45.2 45.1
Rock Beloit-Converse ppb 35.2 33.9 32 31 28.9 27.2 26.2 27 27.7 29 30.3 32.1 35 37.4 39.7 40.8 42.1 43 43.1 42.9 42.3 41 39.5 38.1
Sauk Devils Lake ppb 38.5 37.8 36.8 35.8 34.2 32.3 30.9 31.6 32.3 33.4 34 33.9 35 38.9 42.8 45 46.5 48.1 49.6 49 48.1 46.6 44.9 42.6
Sheboygan Sheboygan-Haven ppb 37.1 37 37.6 38.4 39.1 39.7 40.2 40.7 41 41.2 41.5 42 42.7 43.5 44.1 44.6 45.1 45.5 45.5 45 44.1 42.7 41.2 40.2
Sheboygan Sheboygan-Kohler Andrae ppb 37.6 37.5 38 38.7 39.4 40 40.6 41.1 41.6 41.8 42.1 42.6 43.2 44 44.6 45.1 45.5 45.9 46.2 46.4 46.5 46.6 46.6 46.6
Vilas Trout Lake ppb 39.7 39.7 39.3 38.7 37.6 36.1 34.1 33.6 33.8 35.1 36.1 37.4 39.3 41.5 44.2 45.6 46.3 46.8 47.1 47.2 46.1 45 44.6 43.8
Walworth Elkhorn ppb 34.8 33.4 31.9 31 30.1 28.5 28 28.6 29.6 30.9 32.6 34.5 36.6 39.7 42.3 44.1 44.8 45.2 45.1 44.8 44.1 42.9 41.3 39.4
Waukesha Waukesha-Cleveland Ave. ppb 34.8 34.1 33 31.9 30.7 29.1 27.8 28.3 29.3 30.5 31.8 33.6 36.1 39 41 42.1 42.9 43.5 43.8 43.5 42.7 42.2 41.9 41.4