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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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Saturday, 
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 36.5 35.5 33.9 33.4 32 30.2 28.1 26.4 24.5 24.9 25.9 27.4 30.7 33.2 35.5 37.3 39.3 38.9 37.9 36.4 34.3 32.1 29 25
Brown Green Bay UW ppb 30.2 28.4 27.4 26.3 26 26.4 27.1 28.1 29.2 29.8 30.2 31.3 32.2 33.1 33.6 33.8 34.4 34.7 34.8 33.8 33.6 33.8 34.9 35.8
Columbia Columbus ppb 42.2 40.5 38.4 36.9 35.2 33.6 32.3 31.5 30.6 30.2 31 32.4 34.4 36.8 38.7 39.7 40.7 41.4 41.7 40.7 38.9 37.2 35.5 34.1
Dane Madison East ppb 46.2 44.7 43.4 41.7 39.8 38.1 36.1 34.3 33.3 32.7 32.9 33.7 35.1 36.4 38.1 39.4 40.1 40.7 40.4 38.6 36 32.9 28.7 23.9
Dodge Horicon Wildlife Area ppb 47.1 45.4 43.8 42 40 38.3 36.5 34.8 33.4 31.9 31.3 31.5 32.2 33.3 34.8 36.4 37.8 39.1 39.9 39.8 39.3 38.2 36.7 34.7
Door Newport Park ppb 47.4 44.3 41.3 40.1 37.2 35.4 34.1 34.1 33.9 34.4 34.1 32.5 33.3 32.2 32.5 33.6 34.2 34.1 35.3 36.1 37.3 39.6 39.5 38.3
Eau Claire Eau Claire DOT Sign Shop ppb 23.5 18.9 15.1 13.8 14.2 16.7 19.9 23.5 26.9 30.7 33.2 33.9 34.9 35.9 37.2 38.7 40.2 41 42.2 44.2 43.7 41.6 39.1 36.7
Fond du Lac Fond Du Lac ppb 44.1 43 41.9 40.6 38.9 37.3 35.8 35 34.3 33.9 33.6 33.2 33.7 34.4 35.5 36.6 37.6 38.6 39.7 40.5 40.4 39.9 38.9 37.9
Forest Potawatomi ppb 32.3 32 32 32 33 33.9 33.7 34.1 35.6 37.5 38.8 40.3 40.2 40.3 40.9 40.9 40.4 39.1 38 36.9 36.4 35.6 34.6 33.3
Jefferson Jefferson-Laatsch ppb 45.9 43.9 41.9 39.8 37.7 35.9 34.4 33.7 33.3 33 33 33.8 35.2 36.7 38.8 40.6 41.9 42.8 43.3 42.1 39.3 36.1 31.8 26.9
Kenosha Chiwaukee Prairie ppb 44.7 43.1 41.7 40.4 39.8 39.3 39.6 40 40.6 40.9 41.9 42.9 44.1 45.9 48 49.4 50.3 51.5 51.5 49.9 47.3 43.2 37.4 31.7
Kenosha Kenosha-Water Tower ppb 44 42 40.6 39.1 38.4 38.6 38.9 39.3 40 41 41.8 42.8 43.9 45.1 46.2 47.5 48.5 49.6 49.9 49.3 47.7 45.2 42.1 38.3
Kewaunee Kewaunee ppb 39.5 36.2 33.2 30.7 29.4 29.4 29.7 30.9 31.8 32.3 32.8 33.6 34 35 36.4 37.7 38.4 38.5 37.4 35.4 35.4 35.2 35.3 35.3
La Crosse La Crosse DOT ppb 42.1 39.8 37.7 36.7 35.6 36.3 36.5 36.8 36.6 35.8 34.9 33.4 32.2 31.7 31.5 31.5 31.5 32.3 33.7 34 32.8 31.1 28.5 25.7
Manitowoc Manitowoc ppb 44.6 41.9 38.8 35.8 33.9 33.8 33.8 33 32.3 30.8 30.8 31.6 33 34.3 35.7 37.4 39.3 41.7 42.4 40.1 36 31.2 29.7 29.2
Marathon Lake Dubay ppb 35.2 33.8 32.7 31.7 30.3 28.6 26.5 25.9 25.6 25.7 25.7 26.4 27.6 29.4 31.2 32.5 34.1 35.6 36.5 36.4 36 34.7 33.6 32.4
Milwaukee Bayside ppb 45.6 44.6 43.6 42.3 40.7 39.1 37.7 36.5 35.4 34.9 34.9 35.6 36.9 38.2 40 41.9 43.9 45.7 46.7 47.2 47 45.9 43.4 40.2
Milwaukee Milwaukee-16th St. Health Center ppb 42.1 41.3 40 39.4 39.4 38 36.7 35.4 34.3 33.7 33.8 34.3 35.1 36.2 37.5 39.2 41 42.6 43.5 43.4 42.1 40.2 38 34.9
Milwaukee Milwaukee-UWM UPark ppb 44.5 44 43 41.7 40.7 39.4 38.3 37.3 36.5 36.1 36.3 37.3 38.4 39.6 41.2 43 44.8 46.7 48 48.4 47.7 45.8 42.9 39.6
Outagamie Appleton ppb 31.6 30.4 29.9 29.2 29.2 29.8 30.5 31.5 32.4 32.4 32.8 33.7 34 34 34.5 35.2 35.9 36.6 36.6 35.8 35.9 36 36.2 36
Ozaukee Grafton ppb 50.5 49.9 48.8 47.9 46.5 44.7 42.7 40.9 39.2 38.1 37.3 36.8 37.1 38 39.3 40.6 41.8 42.6 43.2 43.4 43.2 42.3 40.7 38.3
Ozaukee Harrington Beach Park ppb 48.4 48.4 47.7 46.7 45.2 43.3 41.2 39.3 37.9 36.2 35.1 34.3 34.6 35.6 36.8 37.8 39.3 40.6 41.3 42 42 41.5 40.7 39.5
Racine Racine-Payne & Dolan ppb 46.6 45 43.2 41.5 39.8 38.8 38.2 37.7 37.3 37.7 38.9 40.1 41.3 43 44.6 46.8 48.5 49.4 49.8 49.6 48.1 45.2 41.9 37
Rock Beloit-Converse ppb 44.2 41.4 39.1 37.3 35.5 33.9 32.8 32.5 32.7 33.5 34.3 35.4 37.5 39.5 41.4 43.1 43.8 43.6 42.5 40.6 36.8 32.2 27.1 21.5
Sauk Devils Lake ppb 47.3 45.6 44.5 42.6 40.6 38.6 37.2 35.2 34.7 34.2 33.7 33.9 34.5 35.1 35.1 35.7 36.1 36 35.2 34 31.8 28.7 25.8 22.2
Sheboygan Sheboygan-Haven ppb 47.7 46.1 44.6 43.5 42.1 40.5 39 37.6 36.3 36.2 36.3 36.7 37.2 38 38.7 39.4 40.4 40.1 40 40 39.7 39 38.3 37.7
Sheboygan Sheboygan-Kohler Andrae ppb 46.8 44.7 42.8 40.9 39.2 38.1 37 35.6 34.7 34.3 34.2 34.6 35.4 36.6 38.2 40.4 42.3 44.2 46.3 47.7 48.4 46.4 44.2 40.8
Vilas Trout Lake ppb 22.6 21 19.6 18.9 20.4 21.4 22.4 23.5 24.3 26.9 30.4 33.5 35.6 36.4 38.4 40 41.8 41.1 39.9 38.1 35.9 34.5 32.1 29.2
Walworth Elkhorn ppb 42.7 41 40.2 39.2 38.8 38.4 37.8 37.5 37.4 37.4 37.3 37.9 39.3 41 43 45.1 47 47.7 47.7 46 42.3 38.7 36.4 33.9
Waukesha Waukesha-Cleveland Ave. ppb 43.4 41.6 39.3 36.9 35.7 34.8 34.1 33.3 32.7 32.4 33.1 34.3 35.2 36.3 38 40.4 42.7 44.5 44.9 44.3 42.8 40.6 37.4 33