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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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Saturday, 
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 13.9 11.2 9.7 9.4 10 10.5 12.1 14 15.8 17.3 19.3 22.7 26.5 30.6 34.1 37.3 40 41.9 42.2 39.7 36.6 33.8 31.5 29.1
Brown Green Bay UW ppb 19.4 17 15.1 14.2 13.4 12.8 12.6 12.6 13.4 15.6 19.3 23.3 28.2 32.9 37.1 40.3 42.5 43.6 43.7 42.6 40.8 38.5 35.6 33.8
Columbia Columbus ppb 25.6 22.6 20.3 19.1 17.7 16.8 16.1 16.2 17 19 22.1 25.3 29.4 33.6 37.3 40.9 43.6 44.4 43.7 42.2 40 37.6 35.1 31.9
Dane Madison East ppb 26.8 25.3 23.4 21.1 20.1 19.1 17.7 18.3 17.9 18.6 21.5 25.8 29.9 34.5 39.6 42.5 44.9 45.9 45.4 43.8 41.7 39.4 36.3 33.5
Dodge Horicon Wildlife Area ppb 30.3 28.3 26.4 24.5 22.7 20.7 18.8 17.6 17.5 18.9 21.5 25.1 28.9 33 37 40.6 43.5 45 45.1 43.7 42.4 40.9 39.2 36.9
Door Newport Park ppb 31.4 28.2 24.7 22.6 21.1 19.7 19.3 19.1 18.9 19.4 20.1 20.8 21.6 22.5 23 25 28.2 30.6 32.7 34.8 37.1 38.7 38.7 38
Eau Claire Eau Claire DOT Sign Shop ppb 13.4 8.9 5.2 2.8 1.3 2.2 3.1 4.2 6.3 9.4 13.5 18.3 23.1 26.9 31.1 35 37.7 39.2 39.3 38.2 35.8 32.7 29.6 27.2
Fond du Lac Fond Du Lac ppb 31.6 30.4 29.6 28.9 27 24.9 23 22.1 22.3 23.8 26.2 28.9 32.7 36.9 41 43.5 45.1 45.3 44.2 42.8 41.2 39.1 36.9 34.7
Forest Potawatomi ppb 20.1 19.6 19.9 20.5 20.7 21 20.4 20.1 20.5 21.6 23.3 25 26.7 28.8 31.6 34.1 35.6 36 35.7 35.4 35.2 34.6 34 33.4
Jefferson Jefferson-Laatsch ppb 24.4 20.7 18 15.1 13.7 12 11.1 10.7 11.2 13.1 15.4 19.5 23.3 28.2 32.7 36.1 39.1 41.7 43.1 42.4 41.1 39.1 36.6 34.1
Kenosha Chiwaukee Prairie ppb 32.7 28.9 25.6 22.1 20 17.7 16.3 17.1 18.8 20.5 23.2 27 31.1 36 39.3 41.4 42.8 43.6 43.9 43.2 41.2 37.2 33.2 29.5
Kenosha Kenosha-Water Tower ppb 30.7 27 23.4 20.6 18.4 16.2 14.6 14.4 15 16.9 20.1 24.2 29 34.1 39.2 42 43.8 44.4 44.3 43.3 41.3 38.6 35.5 33
Kewaunee Kewaunee ppb 28.7 24.5 22.7 21.1 19.7 18.5 17.4 16.9 17.8 19.4 21.9 24.7 27.7 31.3 35 38.4 40.9 42.4 42.6 42 41.5 40.5 39.2 37.7
La Crosse La Crosse DOT ppb 20.1 16.7 13.6 11.4 11.1 10.9 10.8 11.8 13.1 14.5 16.5 19.8 23.1 26.8 30.1 33 35.7 38 39.2 38.8 37.6 36.2 34.9 34
Manitowoc Manitowoc ppb 25.9 19.3 17 17.1 16.1 14.5 13.3 13.6 14.9 17.9 20.3 23.1 27.3 31.5 35.5 38.7 41 42.7 43.8 43.9 42.2 38.1 36 35
Marathon Lake Dubay ppb 29.2 28.3 28.3 28.2 26.7 24.4 23 22.2 21.5 21.2 21.8 23.3 25.7 29.2 32.6 36.1 38.9 40.6 40.7 39.9 38.9 37.6 35.7 33.2
Milwaukee Bayside ppb 33 28 23.6 19.9 17.1 14.8 13 12.5 13.8 16.6 20.5 25 28.8 31.9 35 37.9 40.9 42.5 43 42.7 41.9 40.2 38.4 36.2
Milwaukee Milwaukee-16th St. Health Center ppb 30.8 27.8 24.9 22.3 20.3 18.5 17.2 16.7 17.4 18.8 21.1 24.3 27.5 30.9 34.2 37.4 40 41.8 42.1 41.2 40.3 38.9 36.8 33.9
Outagamie Appleton ppb 25.5 23.7 21.6 19.5 17.5 15.7 14.4 14.3 15.7 18.7 22.2 25.7 29.7 33.5 37.3 40.7 42.8 43.5 43.5 43.2 42 40.5 37.9 34.4
Ozaukee Grafton ppb 31.9 28.2 26 23.7 21.8 20.2 19.1 19.1 20.8 23.1 25.7 29.2 33.6 36.7 39.5 41.8 43.5 45.5 46.8 47.2 46.4 45.9 45 43.5
Ozaukee Harrington Beach Park ppb 33.3 29.3 26.7 25 23.4 22.2 21.2 20.7 21.6 23 24.9 27.6 31.6 34.5 36.9 39.1 40.4 41.4 42 42.5 41.8 41.5 41.4 41
Racine Racine-Payne & Dolan ppb 35.2 31.2 28.1 25.4 23.4 21.7 20.5 19.4 19.3 20.7 23 26 29 32.2 36 40.1 43.1 44.1 44.1 43.4 42.3 41.3 39 36.5
Rock Beloit-Converse ppb 21 17.3 13.8 11.9 11 9.6 8.4 8.7 10.3 13.2 17 21 25.2 29.5 33.2 37.2 39.4 40.3 39.7 38.2 36.1 34.2 32.5 30.2
Sauk Devils Lake ppb 16.6 13.2 10.4 9.7 10.6 11.1 11.3 12.5 14.4 16.6 20.2 23.6 26.1 29.5 33.6 37.4 40.8 42.5 41.5 39.4 37.8 36.6 34.8 32.1
Sheboygan Sheboygan-Haven ppb 28.7 25.4 23.1 21.8 20.6 19.4 19.3 19.4 20.3 21.8 23.9 26.6 30 33.3 36.4 38.8 40.2 40.7 41.1 40.4 38.7 36.8 35.5 33.9
Sheboygan Sheboygan-Kohler Andrae ppb 28.1 23.1 20.7 19.7 18.6 17.9 17.1 16.9 18 20.1 22.1 25.2 29 32.6 36.6 40 42 43.8 45 45.7 45.7 45.6 45 44.7
Vilas Trout Lake ppb 10.4 8.4 6.7 6.1 6.6 6.7 7.5 9 11 13.6 17.6 21.9 25.9 30.8 35.1 38.3 40.5 41.8 40.8 39.2 37.4 34.9 31.9 29
Walworth Elkhorn ppb 30.1 27.9 26 24.2 23.1 21.8 20.5 19.8 19.7 21.1 23.2 25.7 28 31.1 34.2 37 38.8 38.9 38 36.6 34.4 31.9 29.5 27.1
Waukesha Waukesha-Cleveland Ave. ppb 29.7 25.8 22.3 19.1 16.4 13.8 12 11 11.5 13.7 16.7 20.5 24.4 29.1 33.6 37.8 41.3 43 43.5 42.9 41.5 39.4 36.5 33.9