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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/12/2025 00:00 to 7/14/2025 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,Pierce,Pepin,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 26.1 25.6 25.4 25.2 25.2 25.2 25 24.9 24.4 24.2 24.4 24.9 25.1 25.6 26.3 27.2 28.1 28.3 27.1 24 20.6 17.1 14 11.1
Brown Green Bay UW ppb 30.1 28.7 27.9 27.8 27.8 27.2 26.3 25.8 25.7 26.4 26.7 26.6 26.6 27.3 27.8 28.3 28.4 28.1 27.2 25.6 24.2 23.4 22.6 21.9
Columbia Columbus ppb 36.2 33.7 29.5 25.1 22.7 19.8 17.4 15.1 15.9 17.8 22.2 27.1 31.9 37.1 42.2 46 46.3 45.8 44.5 42.3 40 37.2 33.6 30.4
Dane Madison East ppb 43.3 40.5 37.9 35.9 34.1 32.5 30.2 30.2 30.9 30.6 30.8 33.1 35.9 39.2 43.1 46.2 48.1 48 47 46.2 44.5 42.1 39.4 36.6
Dodge Horicon Wildlife Area ppb 35.8 32.6 29.3 25.7 22.1 18.5 15 13.5 14.9 18 22.1 27.3 32.4 37.8 43 47.2 49.4 49 47 43.6 40.2 36.3 32.3 28.8
Door Newport Park ppb 27.1 25.9 24.9 23.7 22.3 20.8 20 19.8 20.1 20.4 20.3 20.8 21.9 23.4 24.5 25.2 25.5 25.3 24.5 23.3 22.1 22.3 22.9 23.5
Eau Claire Eau Claire DOT Sign Shop ppb 24.6 18 12.1 8.1 4.9 2.8 1.7 0.9 0.8 1.4 3 6.1 9.9 14 18.3 21.6 24.2 26.3 27.6 27.3 26.5 25.2 23.5 22
Fond du Lac Fond Du Lac ppb 27.9 24.8 22 19.4 20.1 20.1 19.7 19.2 18.8 18.7 18.4 21.5 43 40.9 38.4 36.2 33.2 29.8 25.7
Forest Potawatomi ppb 15.1 14.4 14.1 13.9 13.3 12.4 12.1 12.5 13 13.5 14 14.3 15.3 16.2 16.3 15.6 14.6 13.6 12.8 12.8 12.4 11.6 11.4 11.9
Jefferson Jefferson-Laatsch ppb 42.4 40.8 39.3 37.6 35.4 33 30.9 29.4 28.7 29.5 30.6 32.4 34.9 37.8 40.9 43.9 46.1 46.7 45.8 43.5 39.8 35.8 32 27.9
Kenosha Chiwaukee Prairie ppb 44.5 42.7 40.9 38.8 37.3 35.6 35.2 35 35.4 35.5 38.2 42.2 47.3 53.2 54.1 54 53.9 55.4 54.5 51.6 47.6 43.6 39.9 37
Kenosha Kenosha-Water Tower ppb 41.8 39 36.4 34.6 30.9 27.7 26.5 26.5 27.6 29.9 33.2 36.2 41.5 47.2 49.9 54 55.1 55.8 54.5 50 44.5 39.6 38.1 33.7
Kewaunee Kewaunee ppb 33.4 31.7 30.2 28.5 27.1 26.2 25.6 25.1 25.1 25.6 26.4 27.6 28.8 29.7 30.3 30.9 31.4 31.9 31.5 30.7 29.2 28 26.7 25.4
La Crosse La Crosse DOT ppb 48.6 47.3 45.7 43.7 41.4 39.2 37.1 35.1 33.9 33.4 33.9 35.4 37.3 39.5 41.7 43.9 46.1 47.4 47.3 45.7 43.8 41.3 38.5 35.3
Manitowoc Manitowoc ppb 30.1 28.6 27 26.1 25.2 24.4 23.9 23.8 24.1 24.5 25.1 25.9 26.6 27.4 28.2 28.3 28.1 28.3 28.4 27.6 26.2 24.2 22.8 22.1
Marathon Lake Dubay ppb 28.4 25.8 23.9 22.6 22.9 23.3 23.6 23.8 24 24.5 24.5 24.9 25.2 26.2 27.6 29.2 30.3 30.5 29.7 28.6 26.5 23.6 20.6 17.7
Milwaukee Bayside ppb 42.8 40.3 37.4 33.6 30.5 28.4 26.6 25.7 25 24.7 25.2 25.6 26.4 27.2 27.6 28 28.5 28.9 28.9 28.9 28.8 28.5 28.4 28.1
Milwaukee Milwaukee-16th St. Health Center ppb 36.9 34.8 33.2 31.7 30 28.2 26.7 25.3 24.5 24.3 24.2 24.3 24.9 26.2 28.1 28.9 28.8 28.6 28.1 27.8 27.5 26.4 24.9 24.3
Milwaukee Milwaukee-UWM UPark ppb 45.3 42.5 40 37.6 34 32.4 30.6 29.3 28.2 27.4 27.2 27.1 27.2 27.6 28.1 28.4 28.8 29.1 29.3 29.5 29.8 29.6 29.2 29.2
Outagamie Appleton ppb 28.2 26.9 25.8 25.4 25 24.4 23.8 23.5 23.2 23.2 22.8 22.1 22 22.4 23.1 24 24.9 25.4 25.5 25.3 24.6 23.7 22.5 21.3
Ozaukee Grafton ppb 39.1 35.8 33.1 30.8 27.2 25.1 23.7 22.8 22.8 23.1 23.5 24.3 25.2 26 27.3 28.1 28.7 29.2 29.6 29.9 30.1 29.5 28.3 27.7
Ozaukee Harrington Beach Park ppb 39.3 36 32.2 29.1 26.9 25.6 24.7 24 23.7 23.9 24.6 25.4 26 26.1 26.7 27.9 28.6 29.3 29.8 30.1 30.2 29.5 28.9 27.8
Racine Racine-Payne & Dolan ppb 44 41.8 39.8 37.9 35.6 33.2 31.1 29.5 28.4 28 28.3 29 30 30.7 31.1 32 34.3 37.5 36.7 36.1 35.5 34.7 34 33.3
Rock Beloit-Converse ppb 42.3 38.4 35.3 32.4 29.5 26.8 25.2 25.6 26.7 27.7 28.2 31.2 35.3 39.8 44.3 48 51.4 52.2 52.3 52.9 52.2 50.6 48.3 45.4
Sauk Devils Lake ppb 51.7 51.6 51.8 51.6 50.8 49 46.6 44.4 42.4 41.4 41.1 41.2 41.5 42.4 43.9 45.3 46.6 46.7 45.9 44.5 43.9 42.8 39.8 36.8
Sheboygan Sheboygan-Haven ppb 32.4 30.9 29.1 27.9 27.2 25.8 24.2 23.4 23.5 24.1 25 25.7 26.2 27.3 28.2 28.6 28.9 29 28.6 28.3 27.2 25.9 24.7 23.8
Sheboygan Sheboygan-Kohler Andrae ppb 35.4 31.9 28.9 27.5 25.8 24.5 23.3 22.6 22.8 23.2 24.1 24.9 25.7 26.8 28.2 29.2 29.7 30.1 30.1 29.8 29 28.4 27.2 26.2
Vilas Trout Lake ppb 13.9 12.5 11.3 9.9 8.5 7.7 7 6.5 6 6.1 7 8 8.4 8.6 9.3 10.6 12.3 14 15.6 17.3 19 20.7 21.7 22.2
Walworth Elkhorn ppb 42.4 41.2 39.4 37.6 35.4 32.6 30.4 29.8 30.5 31.8 33.4 34.9 37.7 40.4 43.9 46.2 47.4 47.8 47.1 46.1 43.1 39.7 34.9 31.4
Waukesha Waukesha-Cleveland Ave. ppb 39.9 38 34.8 34.2 33.2 28.3 23.4