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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 20.8 17 14.4 12.8 13.9 16 18.9 22 24.6 27 30.2 34 37 40.1 43.1 46 48.9 51 51.1 49.1 46.4 42.9 39.2 35.5
Brown Green Bay UW ppb 42.3 40.6 38.6 36.6 34.7 33.1 30.5 29.7 30.3 31 33.1 36.2 39.1 42.2 46.5 49.4 50.9 51.8 51.8 51.1 50.1 48.8 47.5 46.4
Columbia Columbus ppb 40.8 40.1 39.6 39 38.4 38 37.6 37 37.7 39.4 40.9 42.5 44.3 46 47.7 49.4 50.2 50 49.6 49.4 48.9 47.9 46.7 45.5
Dane Madison East ppb 37.7 35.9 33 29.1 25.3 21.7 18.1 17 17 18.7 22.7 27.9 32.9 38.1 43.5 46.3 48.4 50 49.4 47.7 44.5 41.5 36.8 30.9
Dodge Horicon Wildlife Area ppb 43.1 41.4 38.9 36.4 34.1 32.1 30.2 29.4 30.6 32.9 36 39.1 42.4 45.5 48.3 50.4 51.5 51.6 51.3 50.5 49.5 48.2 46.8 45
Door Newport Park ppb 43.3 43.1 42.9 42.7 42.5 42.2 42 41.9 41.8 42.1 43 44.5 46.2 47.8 49.3 50.8 52.2 53.2 53.7 53.7 53.4 53 52.4 51.5
Eau Claire Eau Claire DOT Sign Shop ppb 23.6 20.7 17.8 14.7 11.5 8.7 6.7 5.8 6.8 10.5 14.9 19.9 25.3 30.4 35.6 40.3 43.4 44.7 44.7 43.4 40.2 36.4 32.2 27.5
Fond du Lac Fond Du Lac ppb 41.9 39.9 37.6 35.9 34.6 33.3 31.5 30.1 31.1 32.9 35.4 37.9 40.1 42.4 45.5 47.8 48.4 48.8 48.5 47.9 47.2 46.4 45.1 43.1
Forest Potawatomi ppb 46.3 45.5 44.8 44.3 43.8 43.1 42.7 42.9 42.8 42.9 43.3 43.8 44.7 45.8 46.7 47 47.7 48.5 49.1 49.4 49.4 49.4 48.9 48.4
Jefferson Jefferson-Laatsch ppb 37.1 34.9 31.8 28.7 26.2 23.3 21.1 20.7 23 26.2 30.2 34.5 38.5 43 46.6 48.9 49.6 49.6 48.8 46.2 43.2 39.6 35.2 30.5
Kenosha Chiwaukee Prairie ppb 49 48.4 47.3 45.7 43.1 39.7 36.8 35.1 33.8 34.8 36.4 38.7 41.9 45.8 49.2 51.5 53.4 54 54.1 53.7 50.6 46.6 43.4 40.6
Kenosha Kenosha-Water Tower ppb 45.7 44.9 43.4 41.4 38.4 35 31.6 29.5 29.3 30.7 33.4 37.1 41.5 45.8 49.8 52.7 54.1 54.1 53.4 51.9 50.4 49 47.5 45.2
Kewaunee Kewaunee ppb 44.8 42.6 40.5 39.3 37.9 36.7 35.8 35.8 36.1 36.9 38.3 39.4 41.1 43.6 46 48 49.8 51.2 52.2 52 51.6 50.6 49.5 48
La Crosse La Crosse DOT ppb 29.5 27.9 25.5 23.3 20.4 17.2 14.2 12.2 10.4 10.9 14.6 19.2 24.4 29.8 35 39 43.5 47 47.8 46.2 44.5 41.9 39.1 35.3
Manitowoc Manitowoc ppb 37.8 34.9 32.2 29.8 28.2 27.6 27.2 27.2 28.5 30.7 32.6 34.8 37.5 40.1 43.4 46.4 48.4 49.4 50.8 51.2 50.1 48.8 46.2 41.6
Marathon Lake Dubay ppb 43.4 42.7 42 41.6 41.1 40.1 39.2 38.8 38.7 39.1 40.1 41.4 43 44.8 46.5 48 49.1 49.7 49.6 49.3 48.9 48.2 47.4 46.4
Milwaukee Bayside ppb 43.7 41.4 39.4 36.9 34.6 32.4 31.2 31.6 33.4 35.9 38.4 41.4 44.3 47 49.5 51.8 53.3 53.8 53.9 53.5 52.2 50 46.5 41.5
Milwaukee Milwaukee-16th St. Health Center ppb 33.3 32.3 30.9 28.6 25.6 22.6 20.9 21.3 22.3 23.7 26.1 29.1 32.8 36.3 38.9 40.5 41.2 41 40.3 39.3 37.7 35.9 34.3 31.9
Milwaukee Milwaukee-UWM UPark ppb 44.8 43.4 41.3 38.5 35.6 33.1 31.4 31.2 31.8 33.4 36 39.1 42.3 44.9 47.4 49.1 50 50.1 49.6 49 48 46.4 43.3 39
Outagamie Appleton ppb 38.7 34.7 30.8 27.6 25.7 22.3 19.8 20.2 22.1 25.5 29.3 33.2 36.9 41.9 45.9 48.1 49.5 49.9 49.8 48.9 47.6 46.5 45.4 43.5
Ozaukee Grafton ppb 43.8 43 42.1 40.9 39.3 38.3 37.5 36.7 36.9 37.8 39.1 41.1 43.6 46.3 48.6 50.8 52.1 52.5 52.7 52.3 51.5 50.3 48.1 44.7
Ozaukee Harrington Beach Park ppb 43.4 42.2 40.8 40.2 40.7 41 41.1 41.1 41.6 42.5 44.2 45.8 47.2 48.7 50.6 52.3 53.8 54.8 54.9 54.5 53.6 52.4 51 49.5
Racine Racine-Payne & Dolan ppb 47.5 47.7 47.9 48 47.4 45.8 43 42.1 42.1 42.3 42.9 43.8 45.1 47.5 51 52.6 53.3 53.6 53.2 52.3 49.7 47.2 45.2 43.3
Rock Beloit-Converse ppb 39.7 39.4 39 38 36.9 35.7 35.1 35.3 36.1 37.7 39.7 42.1 44.5 46.9 49.3 51.1 52 52.4 52 48 42.9 37.9 32.4 27.2
Sauk Devils Lake ppb 38.1 35.6 33.5 31.1 28.4 25.4 22.8 21.9 22.5 25 27.9 31.6 35.5 39.9 44.1 46.6 48.2 49.6 49.9 48.5 46 43.3 40.4 37.7
Sheboygan Sheboygan-Haven ppb 42.7 41.2 39.6 38.3 37.6 37.1 36.4 36.5 37.6 38.9 40.6 42.1 43.7 45.6 48.2 50.1 50.6 50.9 50.6 50.1 49.3 48.2 46.9 45.7
Sheboygan Sheboygan-Kohler Andrae ppb 45.2 42.9 40.6 38.3 36.4 34.5 32.9 32.8 33.4 34.4 36.1 37.8 39.7 42.1 44.9 47.7 49.9 51.8 52.8 53.7 53.5 51.7 49.4 46.9
Vilas Trout Lake ppb 36.5 33.7 31 28 27.3 26.7 26.9 27.7 28.9 30.6 32.8 36.3 38.5 40.2 42 43.7 45.6 47.3 48.5 48.7 48 47.2 45.8 43.5
Walworth Elkhorn ppb 39.4 38.5 37.9 37.3 36.6 35.8 35.1 35.2 36.1 37.7 39.2 41.2 43.7 46.4 48.7 50.3 51.1 51.2 50.7 49.6 48.2 46.9 45.1 43.4
Waukesha Waukesha-Cleveland Ave. ppb 37 35.1 33.1 30.7 27.8 25.2 24.2 25.3 27.3 29.7 32.5 36.1 40.3 44.1 47.1 49 49.8 49.9 49.5 48.3 46.7 45.4 43.6 40.9