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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/24/2025 15:00 to 7/25/2025 23:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Green Lake,Iron,Jackson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Rusk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,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 28.2 23.6 18.8 15 15.6 17.5 19.7 21.8 24 26.6 29.6 32.9 32.4 32 31.3 30.5 30.1 29.9 29.6 28 25.5 22.3 19.9 18.5
Brown Green Bay UW ppb 22.7 20.7 19.6 19.9 20.6 21 22 23.3 24.8 26.3 27.4 28.4 29.4 30.8 32 33.5 35.1 36.7 38.6 39.4 39.7 40.1 40.5 40.6
Columbia Columbus ppb 32.5 30.9 29.2 27.7 26.2 25 24.2 24.3 24.9 26.5 28.9 31.6 34.2 36.9 40.1 42.9 44.9 46.2 46.8 46.3 45.9 45 43.4 41.8
Dane Madison East ppb 30.1 28.2 26.5 25.6 25.2 24.6 24.3 24.6 25.6 27.4 29.7 32 34.5 37.2 39.9 42 43.7 44.9 45.6 46 45.9 45.2 44.5 43.6
Dodge Horicon Wildlife Area ppb 29.4 27.1 24.7 22.9 21.1 20 19.1 18.8 19.3 21.1 23.9 26.8 30.2 34.1 38.2 41.9 44.7 46.1 46.6 46.7 46.7 46.3 45.6 44.8
Door Newport Park ppb 22 20.5 19.5 19.7 20.7 21.5 23 26 28.4 30.2 31.4 32.3 33.6 34.6 35.4 35.6 35.8 36.1 36.6 36.7 36.4 35.6 34.7 33.7
Eau Claire Eau Claire DOT Sign Shop ppb 22 17.4 13.8 12.8 14.1 16.6 19.9 23.1 25.4 27.2 28.9 30.7 32.4 35 37.5 40 43.3 46.6 49.6 51.1 51.8 51.1 50.1 48.8
Fond du Lac Fond Du Lac ppb 29.6 27.8 26.3 25.1 24.4 23.6 22.9 22.8 23.5 25 26.5 28.7 31.6 34.8 37.8 40.5 42.9 44.1 44.8 45.2 45.2 44.5 44 43.4
Forest Potawatomi ppb 37.1 35.9 34.7 33.5 32 31 30.1 29.1 28.6 28.3 28.6 28.9 28.4 27.3 26.4 26 25.5 25.3 25.3 25.4 26.3 28.2 29.9 31.2
Jefferson Jefferson-Laatsch ppb 22.1 18.6 15.3 13.1 11.9 11.7 12.8 14.7 17.4 20.8 24.5 28.4 32.6 36.8 40 42.5 44.1 45.2 46.1 46.3 45.6 44.5 43.2 41.8
Kenosha Chiwaukee Prairie ppb 20.5 17.1 13.7 10.7 8.9 9.4 11.1 13 15.1 17.5 20.3 23.9 27.3 30.7 34.5 38.3 41.8 45.2 47.9 49.2 49.9 50 49 48.3
Kenosha Kenosha-Water Tower ppb 18.6 15.3 11.9 10 8.5 8.1 9.5 12.3 16.4 20.7 25.3 29.9 34.2 38.2 42 45.3 47.5 49.4 50.9 51.3 51.5 51.3 49.8 47.6
Kewaunee Kewaunee ppb 27.5 27 25.9 25.3 24.8 25.9 27.7 30 31.6 32.9 35.1 35.6 36.3 37.7 39 40.4 41.7 43 44.1 44.7 45 44.6 44.1 43.2
La Crosse La Crosse DOT ppb 30.4 27.3 24.5 23 21.5 21 21.2 23 24.9 26.8 29.7 32.2 36.1 40 43.7 46.6 49.2 51.2 52.5 52.7 52.3 51.1 49.3 47.5
Manitowoc Manitowoc ppb 16 12.6 9.1 6.6 5 5.2 7.4 10.8 14.5 18.6 23 27.7 32.8 36.7 39 40.9 42.4 43.4 44.1 44.5 44.5 44.2 43.6 43
Marathon Lake Dubay ppb 36.8 36.2 35.2 34 32.2 30.5 28.3 26.7 26 25.4 25.1 25.2 26.5 28.7 31.7 34.4 36.2 37.9 39.9 42 43.7 44.6 44.8 44.5
Milwaukee Bayside ppb 14.2 10.4 6.4 3.3 1.8 1.3 3.1 6 9 12.9 17.2 21.9 27 32.7 36.7 40.2 43.1 45.2 47.2 48.3 48.9 48.1 47.5 46.5
Milwaukee Milwaukee-16th St. Health Center ppb 10.9 8 5.9 4.4 3.4 4.6 7.2 10.2 13.9 17.9 22.2 26.7 31.3 35.3 37.9 40.1 41.7 43.3 43.9 43.9 42.8 41.2 39.2 37.8
Milwaukee Milwaukee-UWM UPark ppb 14.6 10.8 7.1 3.9 1.9 1.5 3.7 7.1 11 15.6 21 26.4 31.2 36.5 39.7 42.5 44.4 45.3 46.3 46.8 47.3 46.7 46.4 45.5
Outagamie Appleton ppb 21.1 18.2 16.4 15.6 14.9 14.3 13.7 15.5 18 20.2 22.2 24.2 27.6 31.6 35.9 38.7 39.7 41 42 43.2 44.2 44.5 43.9 42.9
Ozaukee Grafton ppb 19.1 16.3 13.1 9.7 7.6 6.8 7.4 8.4 9.9 12.7 16.6 20.9 25.7 30.8 35.5 39.8 42.8 44.7 46.7 47.9 48.3 47.7 46.7 45.5
Ozaukee Harrington Beach Park ppb 25.9 24.5 22.8 20.8 17.9 16.5 15.8 16 16.2 17.3 19.1 21.9 26.2 31.1 35.5 39 42 44.1 45.9 46.8 46.5 45.3 43.9 43
Racine Racine-Payne & Dolan ppb 16.9 13.8 10.7 7.5 5.4 5.2 7.2 9.5 11.5 14.3 17.9 22.1 27.5 32.2 35.7 38.7 42.3 45.4 47.2 48.5 48.5 48.4 47.6 46.6
Rock Beloit-Converse ppb 13.2 8.8 4.5 2.6 2 2.6 4.6 7.5 11.3 16.1 21.3 26.4 32 36.8 40.3 42.9 45.2 46.4 47.3 47.7 47.2 46.1 44.9 43.5
Sauk Devils Lake ppb 22.5 19.1 16.4 15.5 15.1 14.8 16.1 18.3 21.6 25.4 30 31.8 33.1 36.7 39.3 41.5 43.1 44.2 44.7 45.1 45.6 45.8 45.6 45
Sheboygan Sheboygan-Haven ppb 23.1 21 19.1 17.7 16.8 16.2 16.1 16.9 18.3 20.2 22.9 25.7 29.5 33.5 37.8 41.5 43.9 45.3 46 46.4 45.9 44.7 43.2 41.8
Sheboygan Sheboygan-Kohler Andrae ppb 20.5 18.1 16.2 14.1 13.6 13.5 14 15.2 16.7 18.1 19.6 22 24.8 28.8 33.1 36.9 40 43.1 45.3 46.3 46.4 45.7 44.7 43.4
Vilas Trout Lake ppb 33.1 30.6 28.2 25.8 24.4 23.5 23.8 24.5 25.6 25.9 26.3 26.4 27.1 29.1 30.5 30.6 30.3 30.3 30.4 30.8 30.6 29.2 27.9 27.2
Walworth Elkhorn ppb 28.9 27.1 25.6 24.4 24.1 24.2 24.7 25.6 27 29.3 31.9 34.6 37.3 39.8 41.9 43.2 44 44.7 44.9 44.8 44.5 43.4 41.5 39.8
Waukesha Waukesha-Cleveland Ave. ppb 14.6 10.5 6.4 3.2 1.7 1.8 3.9 6.9 10.7 15.2 20.3 25.9 31.4 36.1 39.7 42.5 45.2 47.3 48.4 48.7 48.4 48.1 47.4 46.3