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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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Thursday, 
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 46.4 45.1 41.6 37.6 33.2 28.3 25.5 25.4 25.5 26.6 29.9 33.9 38.4 43.3 46.4 47.1 47.7 48.2 48.5 48.5 48.5 48.2 47.2 45.9
Brown Green Bay UW ppb 39.8 39.2 38.4 37.8 37.1 36.1 36.2 36.5 36.7 37.2 38.1 39.1 40.7 42.9 43.9 44.7 45.4 45.8 45.9 45.8 45.8 45.5 45.1 44.6
Columbia Columbus ppb 40 40.2 40.4 40.3 40.1 39.7 38.9 37.4 35.6 34.2 32.6 30.9 29.4 28.3 27.8 27.8 28.4 29 29.6 29.9 30.2 30 29.6 29.3
Dane Madison East ppb 38.8 38.8 39.2 38.9 38.3 37.1 35.8 34.3 32.9 31.7 30.3 29.2 28.6 28.6 28.7 29 29.1 29 29 28.9 28.6 28 27.6 27.1
Dodge Horicon Wildlife Area ppb 42.4 42.8 43.1 43.2 43.3 42.6 41.1 39.6 38.1 36.5 34.8 34.2 32.9 32.1 32.4 32.7 33 33.3 33.7 34.2 34.9 35.6 35.9 36.1
Door Newport Park ppb 47.3 47.2 47.2 47 46.8 46.7 46.5 46.4 46.3 46.4 46.5 46.6 46.8 47.3 47.7 48.4 48.9 49.2 49.2 49.1 49.1 49 48.9 48.4
Eau Claire Eau Claire DOT Sign Shop ppb 40.1 39.2 38.5 38.3 38.2 38.5 38.9 39.1 39.3 39.4 39.7 39.9 40 40.1 40.2 40.4 40.7 41 41.4 41.3 40.8 40.1 39 37.7
Fond du Lac Fond Du Lac ppb 39.9 40 40.1 40.3 40.8 41 40.6 39.8 39.1 38.3 37.3 36.3 35.2 34.4 34.4 34.8 35.1 35.6 36.1 37 38.1 39.1 39.5 39.6
Jefferson Jefferson-Laatsch ppb 41.6 41.9 41.8 41.7 41 39.9 38.3 37 35.7 34.3 32.7 31.2 30.3 29.9 29.8 29.9 30 30.1 30.3 30.5 30.4 30.2 30 29.8
Kenosha Chiwaukee Prairie ppb 44.2 44.3 44.1 43.7 42.8 41.5 40.1 38.4 36.6 34.7 33.2 31.8 30.9 30.7 30.6 30.8 31.2 31.7 32 32.4 32.8 33.1 33.6 34.1
Kenosha Kenosha-Water Tower ppb 42.5 42.7 42.4 41.7 40.6 38.5 36.1 33.1 29.9 27.3 25.2 23.4 22 22 22.1 23.1 24.3 25.3 26.1 26.7 27.5 28.3 29.5 30.4
Kewaunee Kewaunee ppb 48.5 48.8 49 49.2 49.1 48.7 48.2 47.5 46.6 45.9 45.3 44.9 44.9 45.1 45.8 46.7 47.6 48.3 49 49.5 49.8 49.9 49.7 49.4
La Crosse La Crosse DOT ppb 40.4 39.9 39.7 39.7 39.8 39.8 39.9 39.8 39.1 38.1 37 36 35.5 35.1 35 34.7 34.3 34.1 33.7 32.9 32 30.8 29.6 28.6
Manitowoc Manitowoc ppb 41.5 41.8 42.1 42.6 43.5 45.5 46.1 45.6 44.5 43.4 42.5 41.7 41.6 41.9 42.6 43.5 44.6 45.7 46.8 47.7 48.1 48.2 48.1 48.2
Marathon Lake Dubay ppb 43.3 42.9 42.7 42.7 42.5 42.3 42.2 42.3 42.6 42.5 42.1 42 42.1 42.6 43.3 43.7 44.2 44.9 45 44.8 44.4 43.7 42.6 41.5
Milwaukee Bayside ppb 45.5 45.5 45.2 44.5 44.3 42.6 40.6 38.5 36.3 34.3 32.6 31.4 31.5 31.7 31.8 32.1 32.6 33.5 35 36.8 38.5 40 41.8 42.9
Milwaukee Milwaukee-16th St. Health Center ppb 40.7 41 41 40.7 39.3 37.3 35 32.7 30.6 28.8 27.4 26 26.2 26.8 27.3 27.7 27.8 27.8 28.4 29.6 30.6 31.8 33.4 34.5
Milwaukee Milwaukee-UWM UPark ppb 44.9 44.9 44.7 43.9 42.4 40.7 38.6 36.6 34.5 32.9 31.4 30.5 30.5 30.9 31.7 32.3 32.9 33.7 34.8 36.4 37.7 39.1 40.6 41.7
Outagamie Appleton ppb 41.1 39.8 38.7 38.2 37.7 37.1 36.9 37.2 37.7 38.6 39.5 40.9 42.4 43.6 44.6 45.4 46.1 46.4 46.3 45.7 45.2 44.6 44.2 43.2
Ozaukee Grafton ppb 45.4 45.7 45.9 45.8 45 44 42.8 41.3 39.5 37.8 36.1 34.6 34.2 34.1 34.2 34.7 35.3 36.7 38.3 40.1 41.7 43.1 44.3 45.2
Ozaukee Harrington Beach Park ppb 46.1 46.4 46.7 46.8 46.3 45.4 44 42.5 40.9 39.2 37.4 36 35.1 34.9 35.2 35.3 36.3 37.9 39.4 41 42.6 43.9 44.8 45.9
Racine Racine-Payne & Dolan ppb 43.5 43.4 42.9 42.1 40.9 39.5 38.1 36.7 35.1 34.1 33.3 32.8 32.8 33 33 33 32.9 32.8 32.9 33.1 33.3 33.8 34.5 35
Rock Beloit-Converse ppb 38 38.1 38.2 38.1 37.4 36.4 35.1 33.7 32.3 30.7 29 27.2 25.9 25.1 24.7 24.4 24.4 24.7 25.1 25.4 25.5 25.4 25 24.7
Sauk Devils Lake ppb 42.1 42.2 42.4 42.7 42.8 42.3 41.9 41 39.4 37.6 35.9 34.3 32.7 31.2 30.3 29.8 29.6 29.7 30.1 30.5 30.7 30.8 30.4 29.9
Sheboygan Sheboygan-Haven ppb 45.3 45.7 45.6 45.6 45.6 45.3 44.3 43 41.6 40.3 39.5 38.8 38 37.6 37.5 38.2 39.2 40.4 41.6 42.8 44 44.8 45.5 45.6
Sheboygan Sheboygan-Kohler Andrae ppb 45.5 45.5 45.7 45.6 45.3 44.4 43 41.4 39.9 38.6 37 35.6 34.7 34.2 34.4 35.3 36.7 38.3 40 41.7 43.3 44.7 45.6 46
Vilas Trout Lake ppb 43.6 43 42.5 42.2 41.7 41.7 42 42.6 43.2 44.1 45.1 46.1 47.5 48.5 49.3 49.8 49.9 49.7 49.4 49 48.6 48.1 47.6 47.1
Walworth Elkhorn ppb 38.9 38.6 38.5 38.2 37.9 36.8 35.5 33.9 32.4 30.8 28.8 27 26.9 26.3 26.1 26.3 26.7 27.1 27.4 27.7 27.5 27.2 26.7 26.2
Waukesha Waukesha-Cleveland Ave. ppb 43.4 43.5 43.2 43.1 43.1 40.1 37.1 34.2 30.7 27.4 24.6 24.6 24.5 24.8 27.4 28.2 29 29.8 30.5 31 31.4 32.1 30.4 30.6