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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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Monday, 
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 21.5 19.3 16.9 14.7 13.3 14 15.6 17.3 19.5 21.5 23.8 26.1 25.9 25.8 25.6 25.9 25.2 24.7 24.5 24.3 24.3 24.1 23.8 23
Brown Green Bay UW ppb 18.6 17.2 15.9 14.9 14.7 15.4 16.9 17.9 19.5 21.5 24 27.5 28.7 30.7 33.5 36.6 38.2 38.1 37.3 36.2 35.4 35 34.2 33.1
Columbia Columbus ppb 30.2 27.1 24.9 23.3 21.9 20.5 20.5 21 22.8 26.5 30.6 34.6 36 38.7 41 43 45 45.8 45.7 45.8 45.4 45.8 46.2 46
Dane Madison East ppb 33.2 30.1 27.2 24.8 23.6 22.3 21.8 21.8 23.1 25.5 28.4 30.3 31.1 32.9 35.1 37.2 38.8 40.3 40.6 41.6 40.6 40.2 39.7 39.2
Dodge Horicon Wildlife Area ppb 27.3 26 25.2 25 24.6 23.9 24.2 25.2 27 30.3 33.8 37.2 38.2 40.5 42 43.9 46.3 47.1 47.1 47.1 47 47.5 47.8 47.3
Door Newport Park ppb 15 14.1 13 13.7 14.3 16.1 17.2 17.2 18.2 19.7 21.9 23.1 23.8 24.6 25 26.2 27.2 27.4 27.8 27.9 27.7 27.5 27.7 27.4
Eau Claire Eau Claire DOT Sign Shop ppb 35.3 32.9 30.6 28.4 27.5 26.8 25.4 24.3 22.4 21.1 20.4 20.1 20.3 19.9 21.1 22.3 24.2 26.2 27.9 29.4 30.8 32.2 32.6 33.1
Fond du Lac Fond Du Lac ppb 24 22.9 22.2 21.8 21.8 22 22.4 22.8 24.5 27 29.7 32.6 33.9 36 38.7 41.8 44.2 45.2 45.8 45.5 45.2 45.5 45.5 44.7
Forest Potawatomi ppb 29.4 29 28.8 28.8 28.7 28.5 28.5 28.5 28.8 28.9 28.6 28.4 27.7 26.7 26.5 26.5 26.7 27.3 27.9 28.5 29.5 30.1 29.8 29
Jefferson Jefferson-Laatsch ppb 30.7 28.3 26.1 24.4 23.9 22.5 21.8 22.6 24.7 28.3 33 37.4 38.6 41.8 44.4 45.7 46.4 46.4 45.8 44.6 42.7 41.7 41.7 41.7
Kenosha Chiwaukee Prairie ppb 23.4 23.4 23.3 23 22.5 22.1 22.1 23 24.6 25.6 27.3 29.2 30.9 34.5 39.1 44 47.7 51.2 54.3 56.8 58.5 59.1 58.9 57.7
Kenosha Kenosha-Water Tower ppb 22.8 21.4 20.6 19.6 18.8 17.9 18.6 19.4 21.9 24.8 28 32.3 33.7 37.9 42.6 47.4 49.5 50.9 52.3 53.2 54.2 54.7 53.8 52.3
Kewaunee Kewaunee ppb 25.3 25.2 25 24.7 24.5 23.8 23.1 22.6 22.8 23.5 24.5 25.5 26 27.2 28.2 29.2 30.3 31.1 31.6 32.6 33.1 33.8 35.3 36.6
La Crosse La Crosse DOT ppb 31.1 31.3 31.4 31.8 32.2 33 33.2 32.9 32.6 32.4 32.7 32.3 31.6 31.4 31.9 32 31.7 31.9 31.9 32.5 33.1 33.4 33.2 33.5
Manitowoc Manitowoc ppb 15.2 13.6 11.7 10 8.8 9.1 10.9 13.8 17.2 20.3 24.3 29.1 30.2 32.1 33.6 34.4 35.3 36 35.4 34.2 33.8 34.4 35 35.4
Marathon Lake Dubay ppb 31.6 30.1 28.9 27.7 26.8 25.8 25.7 25.5 25.5 26.1 26.5 26.2 26.1 26.6 27 28.1 29.3 30.1 31.1 32.6 33.9 35.2 35.9 35.9
Milwaukee Bayside ppb 20.9 19.3 17.9 16.9 16.2 15.7 16 16.4 17.6 20.4 23.8 27.9 29.9 32.8 36 39.7 43.6 47.4 50.4 51.5 51.5 51.4 51.2 50.1
Milwaukee Milwaukee-16th St. Health Center ppb 19.2 18.2 17.2 16.3 15.8 14.4 14.7 15.3 15.8 17.4 19.9 23.5 24.8 28 31.5 34.5 37 39.7 41.5 40.9 41.5 42.3 41.6 41.1
Milwaukee Milwaukee-UWM UPark ppb 21.9 20.9 19.6 19 18.5 18 18.3 18.5 19.1 21.3 24.4 28.1 30.3 33.7 37 40.8 44.7 48.1 50.5 51.3 51.5 50.9 50.4 49.2
Outagamie Appleton ppb 25.2 23.4 21.2 19.7 18.8 17 16.3 15.9 16.9 19.3 22.8 26.3 26.9 29.2 31.5 35 37.6 39.2 39.4 38.7 38.5 38.2 37.2 34.4
Ozaukee Grafton ppb 20.5 18.9 17.7 16.6 16 15 15.1 16.2 18.8 22.2 25.7 30.5 32.1 35.7 38.8 42 44.4 47.6 50.2 50.4 50.2 50.2 50.3 49.8
Ozaukee Harrington Beach Park ppb 18.7 17.7 16.7 15.6 14.9 14.6 15.2 16.4 18.3 20.7 24 28.3 29.2 32 34.9 37.2 40.1 43.4 44.2 43.9 44.4 44.9 45.1 45.8
Racine Racine-Payne & Dolan ppb 22.6 22.4 22.1 21.7 21.5 21.2 21 21.6 23.7 26.4 29.7 34.2 36.4 40.3 44.2 47.7 49 49.7 50.9 51.1 51.1 51.6 51.4 50.4
Rock Beloit-Converse ppb 33.9 30 26.6 24.5 22.7 21.3 21.5 22.6 24.8 28.6 32.7 36.5 38.1 41.8 46.8 51.2 53.5 55.1 55.6 55.3 53 49.9 45.5 41.3
Sauk Devils Lake ppb 36.1 34.7 33.4 32.4 32.1 31.9 31.3 31.1 31.4 31.9 32.9 33.9 33.7 33.7 34.4 36 37.4 37.5 38.5 40.1 41 41.7 41.9 41.7
Sheboygan Sheboygan-Haven ppb 21.6 20.8 20.1 19.3 18.8 18.3 18 18.7 20.7 23.6 27.3 31.7 32.1 35.1 38.6 41.6 43.6 44.3 44.2 43.4 43.9 42.9 40.8 37.9
Sheboygan Sheboygan-Kohler Andrae ppb 20.1 19.4 18.7 18.1 17.8 17.7 18.1 18.8 19.9 21.5 23.5 26.1 27 29.1 30.7 32.8 35.4 36.8 37.8 38 38.7 39.8 40.8 39.9
Vilas Trout Lake ppb 26.6 26.1 25.9 25.9 26.5 26.9 26.7 26.1 25.8 25.2 24.8 25 25.5 25.8 26.7 27.7 28.2 29 29.7 30 30.6 31.5 32.3 33.1
Walworth Elkhorn ppb 26.9 24.4 22.1 20.3 19.8 19.2 19.1 20 22.2 25.8 31 36.6 38.3 42 46.3 49.7 52.4 54.1 54.5 54.1 53.1 52.6 50.7 49
Waukesha Waukesha-Cleveland Ave. ppb 23.9 22.4 20.9 19.1 18.1 16.4 15.6 15.8 18.7 23.7 29.3 33.9 33.8 36.7 40.7 43.9 44.4 43.4 41.6 39.5 39.6 40.9 40 38.8