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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/12/2025 00:00 to 7/14/2025 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,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Lafayette,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pierce,Pepin,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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Sunday, 
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 47.7 47.8 47.9 48 47.5 46.8 46.1 45.4 44.8 44.1 43.4 43 42.9 42.7 42.2 41.8 41.7 41.5 41.4 41 40 39 38.2 37.3
Brown Green Bay UW ppb 48.8 48.4 47.7 46.6 45.1 43.3 41.4 39.3 37 34.6 32.4 30.4 28.5 27 25.8 24.8 24.1 23.9 24 24.4 25 25.8 26.4 27.6
Columbia Columbus ppb 35.8 33 30.4 28.2 26.5 26 26.1 26.1 26 25.9 25.8 25.6 25.3 25.1 25.2 25.6 26.3 26.8 27.2 27.6 28 28.4 28.9 29.4
Dane Madison East ppb 32.4 29.9 27.9 26.4 25.9 25.9 25.9 25.7 25.5 25.3 25 24.8 24.7 24.8 25.3 26 26.8 27.4 28.1 28.7 29 29.9 30.8 31.5
Dodge Horicon Wildlife Area ppb 40.2 37.3 34.5 32 29.8 27.6 26.2 26.2 26.2 26.1 26 25.6 25.2 25 24.9 24.9 25.2 25.8 26.3 26.8 27.1 27.1 27.3 27.8
Door Newport Park ppb 50.4 49.8 49.2 49 48.7 48.1 47.2 46.3 45.4 44.3 43.4 42.2 40.9 39.7 38.3 36.8 35.3 33.9 32.1 30.2 28.3 26.4 25 25.2
Eau Claire Eau Claire DOT Sign Shop ppb 37.9 35.5 33.3 31 28.7 26.5 24.5 22.9 21.9 21.9 22.9 24.4 26.1 28.1 30.3 32.4 34.6 35.9 35.9 35.2 34.5 33.7 33 32.6
Fond du Lac Fond Du Lac ppb 45 43.4 40.8 38 35.5 32.9 30.6 28.5 26.7 25.4 25 25 24.8 24.7 24.5 24.4 24.7 25.1 25.7 26.2 26.5 26.7 27 27.2
Jefferson Jefferson-Laatsch ppb 35 32.2 29.9 27.6 25.9 26.1 26.4 26.8 26.7 26.5 26.2 26.1 26 26 26.2 26.5 27.1 27.7 28.3 28.5 28.8 29.2 29.6 30.3
Kenosha Chiwaukee Prairie ppb 47.6 44.5 41.9 39.6 36.2 32.5 30 29.5 29.6 29.8 29.8 29.6 29.6 29.6 29.8 29.8 29.7 29.8 30 30.2 30.4 30.5 30.5 30.7
Kenosha Kenosha-Water Tower ppb 43.2 40.1 37.8 35.9 33.8 30.8 29 29 29.1 29.5 29.2 29 28.9 29 28.9 28.9 28.8 29 29.3 29.2 29.2 29.4 29.4 29.6
Kewaunee Kewaunee ppb 52.7 52.6 52 51.2 50.2 49 47.8 46.5 45 43 41 39.1 36.9 34.9 32.6 30.6 28.9 28 27.3 26.8 26.8 27.1 27.5 28
La Crosse La Crosse DOT ppb 28.2 25.8 23.8 23.3 23.2 23.2 23.1 23.7 24.1 24.5 25 25.5 26.3 27.2 28.2 28.4 28.4 28.8 29.5 30.5 31.3 32 32.6 33
Manitowoc Manitowoc ppb 50.2 49.9 49.4 48.8 47.8 46.6 45.1 43.5 41.4 39.3 37.2 35.1 33 30.9 29.1 27.7 27 26.4 25.9 25.6 25.5 25.7 25.9 26
Marathon Lake Dubay ppb 44.6 43.4 41.5 38.8 36.1 33.5 31.1 28.8 26.8 25.1 23.9 23.5 23.7 24.5 25.4 26.8 28.5 30.6 32.8 34.9 36.4 36.9 37.2 37
Milwaukee Bayside ppb 48.8 46.9 43.7 40.6 37.1 34.4 31.8 29.4 26.6 25.7 26.1 26.1 26.2 26.3 26.4 26.4 26.6 26.8 27.1 27.4 27.7 27.9 28.1 28.3
Milwaukee Milwaukee-16th St. Health Center ppb 40.1 37.4 34.6 32.7 30.6 28.2 26.9 25.9 25.7 25.7 25.7 25.4 25.3 25.4 25.3 25.2 25.2 25.3 25.6 25.8 25.9 26 26.1 26.5
Milwaukee Milwaukee-UWM UPark ppb 46.5 44.2 41.3 38.7 36 33.4 31.3 29.2 26.6 26.1 26.1 26.2 26 26 26 26 26.2 26.6 26.9 27.2 27.5 27.7 27.8 28.1
Outagamie Appleton ppb 50.8 50 48.8 47.1 44.3 41.5 38.8 36.4 34.1 32 30 28.5 28 27.6 27.3 26.9 26.7 26.6 26.9 27.7 28.3 28.5 29 29.4
Ozaukee Grafton ppb 48.9 48.6 48.6 45.8 42.6 39.6 36.6 34.2 31.4 28.7 25.9 25.6 25.7 25.7 26 26 26 26.3 26.6 27.1 27.6 28.1 28.4 28.7
Ozaukee Harrington Beach Park ppb 51.5 53.3 54.6 55.1 53 49.8 46.9 44 40.4 35.3 30.9 27.3 26.3 26.4 26.1 26.2 26.2 26.4 26.6 27.1 27.5 27.8 27.9 28
Racine Racine-Payne & Dolan ppb 49.7 46.5 43.7 43 40.5 37 33.2 30.2 28.9 28.9 28.5 28.4 28.1 28.2 28.3 28.2 28.2 28.2 28.4 28.7 29 29.1 29.2 29.3
Rock Beloit-Converse ppb 30.2 28.7 27.5 26.6 26.8 27.1 27.4 27.5 27.4 27 26.8 26.8 26.8 26.9 27.2 27.7 28.4 28.8 29.1 29.4 29.7 30.2 30.9 31.3
Sauk Devils Lake ppb 31.4 28.5 26.4 24.9 24.2 24.3 24.3 24.3 24.3 24.3 24.4 24.5 24.7 25.1 25.6 26.4 27.1 27.7 28.2 28.7 29.3 30 30.9 31.7
Sheboygan Sheboygan-Haven ppb 50.8 50.4 49.8 49.4 48.7 46.8 44.1 41.2 38.5 36 33.3 30.3 27.7 26.1 25.9 25.8 25.8 25.7 25.9 26.2 26.6 26.9 27.1 27.3
Sheboygan Sheboygan-Kohler Andrae ppb 48 47.4 47.1 47.8 48.3 47.9 45.7 43.3 41.2 38.9 36.3 32.6 29 26.3 25.6 25.3 24.8 24.5 24.3 24.3 24.5 24.7 24.8 24.8
Vilas Trout Lake ppb 50.7 50.2 49.4 48.3 47.1 46 44.7 43.5 42.2 40.7 39 37 34.9 32.7 30.7 28.8 27 26 26.3 27.2 28.6 29.9 31.1 32.4
Walworth Elkhorn ppb 37.3 34.4 31.8 29.1 26.8 26.6 26.9 27 27.1 27.2 27 26.8 26.9 26.9 27.1 27.3 27.6 28 28.3 28.6 28.7 28.9 29.3 29.9
Waukesha Waukesha-Cleveland Ave. ppb 42.1 39.1 36 33.3 30.6 28.3 26.6 25.7 25.7 25.7 25.7 25.7 25.7 25.8 25.7 25.9 26.3 26.7 27.3 27.8 28.1 28.3 28.5 28.9