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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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Friday, 
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 40 37.7 33.9 30.3 28.1 26.2 26.4 26.5 26.7 27.3 29.2 30.9 31.5 32.1 32.7 32.7 32.8 33.1 33.5 33.4 32 29.8 26.9 25.5
Brown Green Bay UW ppb 38.8 37.9 36.9 36.1 35 34.3 34 33.9 34 34.5 35.2 36 37.3 38.4 39 39.1 39.4 39.7 40.2 40.4 39.7 38.8 37.7 37.3
Columbia Columbus ppb 40.3 38.1 36 34.4 33.2 32.4 31.9 32.5 34 36 38.2 40.5 42.8 45.2 47.5 48.9 49.2 49.1 48.6 47.6 45.7 44.3 42.7 41.2
Dane Madison East ppb 42.5 40.3 38.3 36.4 34.3 32.8 32 31.6 32.2 33.9 36 38.1 40.8 43.4 46.1 48.4 49.9 50 49.5 48.4 46.9 45.2 44 42.8
Dodge Horicon Wildlife Area ppb 40.1 38.1 36.1 34 32.2 31 30.3 30.6 31.8 33.4 35.5 38 40.8 43.7 44.4 45.8 46.1 46.1 45.1 43.7 43 42.4 41.4 40.4
Door Newport Park ppb 40.3 40.1 39.9 39.8 39.7 39.5 38.9 38.4 37.8 37.4 37.5 37.4 37.4 38.2 39.7 41.5 43.4 44.9 46 46.8 47.3 47 45.6 43.5
Eau Claire Eau Claire DOT Sign Shop ppb 34.1 31.4 27.1 23.7 20.9 18.9 18 18.4 19.8 22.7 27.2 31.5 35.8 39.3 42 44 44.7 44.6 44.3 43.1 41.7 39.8 37.5 35.3
Fond du Lac Fond Du Lac ppb 38.7 36.7 34.8 33 31.6 30.2 29.4 29.6 30.4 31.7 33.3 35.3 37.6 40.3 42.4 43.5 43.9 43.7 42.8 42.4 41.9 41.2 40.4 39.6
Forest Potawatomi ppb 40.8 41 40.8 40.4 39.7 38.9 38.1 37 36.3 35.9 35.7 35.8 35.8 36 37.2 38.6 39.9 41.3 42.4 43 43.5 43.8 43.2 42.1
Jefferson Jefferson-Laatsch ppb 40.5 38.1 35.8 33.7 31.7 30.4 30 30.7 32.1 33.8 35.8 38.3 41.2 44.1 46.9 49 49.9 50.2 49.8 48.2 46.5 45.6 44.6 43.3
Kenosha Chiwaukee Prairie ppb 45.3 41.8 38.9 36.3 33.8 31.6 30.4 30.3 31.7 34.4 37.2 40.3 43.8 47.3 50.8 54 55.9 56.9 55.9 54.4 53.5 52.7 51.4 49.6
Kenosha Kenosha-Water Tower ppb 40.2 36.7 33.6 31.5 28.5 26.5 25.6 26.3 27.9 30.8 33.8 36.7 40.8 44.6 47.9 49.9 51.5 52 50.8 50 49.7 49.4 48.7 47.8
Kewaunee Kewaunee ppb 36.5 37.5 40 41.4 41.9 41.7 41.4 41.7 42.3 42.7 42.8 43 43.7 44
La Crosse La Crosse DOT ppb 32.7 28.2 24.1 20.4 17.2 14.8 13.8 14.1 17 20.9 25.3 29.8 34.1 38.1 41.5 44.5 46.2 47.3 47.7 47.6 46.7 45.2 43.2 41.3
Manitowoc Manitowoc ppb 37.4 35.5 34.1 32.5 31.3 30.4 30 30.3 31.1 32.1 33.3 35.1 36.7 38 38.7 38.8 39.3 40.1 41 41.5 41.7 41.8 41.7 40.5
Marathon Lake Dubay ppb 38.7 38.1 37.3 36.4 35 33.9 33.2 33.5 33.9 34.2 34.1 34.1 35.8 37.5 38.9 39.3 39.3 38.5 37.9 37.7 37.6 37.4 36.7 36
Milwaukee Bayside ppb 40.8 38.8 36.4 34.1 32.2 31.2 31.4 32.4 33.7 35.3 37.3 39.7 42 44.4 46.3 47.4 47.6 46.9 46.4 45.9 45.4 44.6 43.6 42.6
Milwaukee Milwaukee-16th St. Health Center ppb 42.3 40.3 38.3 36.2 34.2 32.3 31 31 31.8 33.4 35.3 37.4 40 42.8 45.4 47.3 48 46.8 46 45.3 44.1 42.9 41.5 40.1
Milwaukee Milwaukee-UWM UPark ppb 43.7 41.4 38.7 36.2 34 32.4 32 32.5 33.9 35.8 38.3 40.7 43.5 46.3 48.6 49.9 50.1 49 48 47.2 46.4 45.5 44.4 43.1
Outagamie Appleton ppb 38.3 37.3 36 34.8 33.9 33.1 32.8 33 33.7 34.7 36 37.6 39.1 40.4 41.2 41.8 42.2 41.6 41.1 40.8 40.1 39.4 38.4 36.9
Ozaukee Grafton ppb 39.2 37.3 34.9 32.9 31.6 30.8 30.6 31.2 32.8 34.2 36.1 38.4 41 43.2 45.1 46.1 45.8 45.4 45.1 44.8 44.2 43.2 42.2 41.5
Ozaukee Harrington Beach Park ppb 39.2 37.2 35.4 33.4 31.7 30.4 30 30.7 31.9 33.5 35.2 37.4 39.9 42.4 44.2 45 44.5 44 43.5 42.9 42.2 41.2 40.1 39.3
Racine Racine-Payne & Dolan ppb 43.5 40.8 38.3 35.9 33.6 31.8 30.5 30.4 31.7 33.7 36.1 38.7 41.8 44.9 47.8 49.9 50.8 50.5 49.2 48.3 47.4 46.7 45.7 44.5
Rock Beloit-Converse ppb 37.2 34.4 31.6 28.5 26.8 26.3 25.9 26.5 28.2 30.6 33.5 37.3 41.3 45.6 49.4 52.5 54.2 54.9 55.3 54.8 52.9 50.3 48.3 46.3
Sauk Devils Lake ppb 39.9 37.4 34.9 32.8 31.5 31.9 31.1 31.1 32.2 34.2 36.5 38.5 40.6 43 45.3 46.4 46.6 46.4 45.9 44.5 41.5 38.5 37.2 36.5
Sheboygan Sheboygan-Haven ppb 38.2 36.6 35.3 34.1 32.9 32 31.8 32.6 33.6 35.1 36.6 38.4 40.5 42.7 44.3 44.2 43.8 43.5 43.1 42.7 42.1 41.2 40.4 40.3
Sheboygan Sheboygan-Kohler Andrae ppb 33.5 31.1 29.1 27.7 26.4 25.4 25.5 27.2 29.2 31.3 33.3 35.5 38 40.5 42.3 43.1 42.7 42.6 42.3 42 41.5 41 40.5 40.2
Vilas Trout Lake ppb 39.7 39.1 38.1 37 36 35.1 34.5 34.1 33.8 33.7 33.8 34 34.8 36.5 37.8 39 40.1 41.1 41.5 41.7 41.5 40.3 38.2 35.7
Walworth Elkhorn ppb 44.5 42.4 40.3 38.2 36.2 34.7 34 33.7 34.8 36.9 39.3 41.9 44.8 47.9 50.6 52.5 53.4 53.4 52.7 50.4 48.7 47.2 45.4 43.7
Waukesha Waukesha-Cleveland Ave. ppb 43.5 41.3 38.8 36 33.6 31.6 30 29.6 30.8 32.6 34.9 37.7 40.6 43.3 46.2 48.4 49 48.6 47.3 46.6 46 45.2 44.1 42.6