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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 28 27.6 27.4 28.3 29.8 31 30.7 30.6 30.9 31.2 31.7 32.4 33.2 33.9 34.9 35.7 36.1 36.6 37 37.1 37.1 36.4 34.9 32.9
Brown Green Bay UW ppb 41.3 38.1 34.8 31.9 30.1 29.4 29 29.1 29.6 30.6 32.2 33.7 34.8 35.5 36.2 36.7 37.2 37.7 37.8 38.4 38.7 38.8 38.8 38.5
Columbia Columbus ppb 32.1 30.2 28.6 28.6 29.1 30.2 31 32.5 33.8 34.9 36.1 36.4 36.8 37.3 38 38.6 39 39.7 40.5 41 41.1 40.7 39.4 38.2
Dane Madison East ppb 42.9 41 38.9 36.8 36 34.6 33.8 33.3 33.5 34.2 35.4 36.7 36.8 37 37.4 37.8 38.4 39.4 40.5 41.5 42.4 43.2 43.6 43.7
Dodge Horicon Wildlife Area ppb 36.2 33.9 31.7 30.1 29 28.5 28.9 30.1 31.3 33 34.7 36.2 37 37.9 38.7 39.4 39.9 40.4 40.8 40.9 40.7 40.2 39.7 38.8
Door Newport Park ppb 60.5 57.1 52 46.7 41.6 37.1 34.1 32.3 31.1 30.9 32.2 33.6 34.7 35.6 35.9 36 36.3 36.4 36.5 36.9 37.6 38.2 38.5 38.7
Eau Claire Eau Claire DOT Sign Shop ppb 39.3 37.8 36.4 35.2 34.8 34.3 33.2 32 31.5 31.3 31.6 32.4 33.5 35.1 36.7 38.2 39.5 40.5 41 40.9 40.2 39.1 37.6 35.7
Fond du Lac Fond Du Lac ppb 38.9 37.2 35.2 33.9 33 32 31.4 31.6 32.1 33.1 34.7 35.9 36.8 37.6 38.4 39.1 39.6 40.1 40.5 40.6 40.3 39.8 38.9 38
Forest Potawatomi ppb 34.6 32.7 31.1 29.7 28.5 27.9 27.7 28.1 28.7 29.1 29.4 29.9 30.5 31.3 32.2 33.1 33.8 34.3 34.8 35.1 35.2 35.1 34.9 34.4
Jefferson Jefferson-Laatsch ppb 28.9 27.1 25.9 24.9 25.4 26 27.8 30 32.3 33.6 34.9 36.2 36.9 37.8 38.6 39.1 39.5 40 40.7 41.2 40.9 40.5 40.2 39.6
Kenosha Chiwaukee Prairie ppb 42.2 39.3 36.9 33.9 31.5 30 30.9 31.5 32.4 33.7 34.9 37.2 39.7 42.2 44.1 45.2 45.9 46.1 45.9 45.4 44.8 43.8 42.5 41.1
Kenosha Kenosha-Water Tower ppb 39.4 36.2 33.1 30 27.5 25.9 26.8 28.2 29.9 31.6 33.6 36.2 38.9 41.5 43.1 44 44.6 44.6 44.4 43.8 43.1 41.7 40 38.4
Kewaunee Kewaunee ppb 46 40.6 36.3 32.3 29.4 28 27.8 28.8 30.7 32.9 34.7 36.5 38.1 39.1 39.9 40.3 40.5 40.7 40.6 40.6 40.6 40.2 39.1 38.2
La Crosse La Crosse DOT ppb 36.3 35.4 34.8 34.4 34.3 34.3 33.8 32.8 31.9 31.3 31 31.2 32.1 33.5 35.1 36.9 38.7 40.2 41.5 42.6 43.3 43.3 42.9 41.8
Manitowoc Manitowoc ppb 43.3 38.5 33.2 29 26.1 24.3 25 27.1 28.7 30.4 33 34.9 36.4 37.7 38.7 39.3 39.8 40.1 40.1 40 39.6 38.7 37.7 35.7
Marathon Lake Dubay ppb 36.8 35.9 35 34.1 33.2 32.8 32.5 32.7 32.1 31.7 31.6 32 33 34.1 35.3 36.4 37.6 38.6 39.4 39.9 40 39.8 39.4 38.8
Milwaukee Bayside ppb 37.7 34.2 31.2 28.8 26.7 26.4 27.5 29.9 31.8 33.6 35.1 36.9 38.8 40 41.1 41.7 42.1 42.3 42.5 42.6 42.2 41.1 39.1 37.4
Milwaukee Milwaukee-16th St. Health Center ppb 37.7 35.4 33.8 32.4 30.5 29.6 29.6 29.9 31.3 32.8 34 35.1 36.9 38.3 39.4 40.1 40.4 40.6 40.7 40.8 40.4 39.7 38.7 37.5
Milwaukee Milwaukee-UWM UPark ppb 42.6 39.6 37.1 34.8 32.6 32.1 31.9 32.1 33.1 34.6 36.1 37.5 39.6 40.9 41.9 42.5 42.9 43.1 43.2 43.4 43 42 40.8 39.6
Outagamie Appleton ppb 35.7 33.3 31.5 29.9 28.7 28.2 28.2 28.5 29.4 31.2 32.7 33.7 34.6 35.6 36.5 37.5 38.1 38.5 39.3 39.9 40.1 39.7 38.5 36.7
Ozaukee Grafton ppb 40.5 37.2 34.3 31.7 30.5 30.5 30.6 31.2 32.5 33.7 35 36.7 38.4 39.6 40.5 41 41.3 41.5 41.7 41.8 41.1 39.5 37.9 36.6
Ozaukee Harrington Beach Park ppb 42.1 39 35.8 32.4 29.7 28.7 29.1 29.9 31.4 32.1 33.4 35.1 36.8 38.2 39.2 39.9 40.4 40.7 41.1 41.1 40.9 40.2 39.3 38.1
Racine Racine-Payne & Dolan ppb 46.2 42.3 38 34.3 30.5 27.6 26.5 27.2 28.7 31 33.3 35.4 38 40.3 42 42.8 43.2 43.4 43.4 43.3 42.9 42.1 41 40
Rock Beloit-Converse ppb 34.1 31.2 29.1 27.4 26.1 25.3 25.8 27.1 29.2 31.5 33.2 34.7 36.2 37.8 39.1 39.5 39.7 40 40.3 40.2 38.9 36.9 34.7 32.2
Sauk Devils Lake ppb 33.2 31.9 30.4 31.2 32.4 32.6 31.9 32 32.5 33.6 34.5 34.7 34.9 35.4 36.2 37 38.1 39.5 40.9 42.1 42.9 43.6 44 43.7
Sheboygan Sheboygan-Haven ppb 39.5 35.6 32.4 29.8 28.2 27.4 27.8 29.1 31.2 32.9 34.4 36 37.1 38.2 38.9 39.4 39.7 40.1 40.2 40.4 40.3 39.9 39.3 38.4
Sheboygan Sheboygan-Kohler Andrae ppb 47.6 43.2 39.5 36.2 32.5 28.9 26.6 26.6 27 29.1 31 32.8 34.8 36.7 38 38.6 39 39.4 39.6 39.7 39.7 39 37.4 36
Vilas Trout Lake ppb 34.5 33.4 32.4 31.4 30.5 30.3 30.6 30.7 30.9 31.1 31.5 32 32.6 33.2 33.8 34.4 34.8 35.3 35.7 35.6 35.1 34.6 34.1 33.3
Walworth Elkhorn ppb 36.3 34.4 32.4 30.6 29.7 29.3 28.7 29.4 30.6 32.2 34.1 36.4 38.4 39.7 40.8 41.3 41.5 41.7 41.9 41.9 41.6 41 40 38.2
Waukesha Waukesha-Cleveland Ave. ppb 35.1 33.4 32.1 31 30.3 29.9 30.8 31.8 32.9 34 35.2 36.8 38.5 39.9 40.7 41.2 41.5 41.8 42.1 42.4 42.3 41.5 40.5 39.7