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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/1/2025 12:00 to 8/2/2025 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,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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Monday, 
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 36.7 35.1 33.9 34.2 34.2 33.9 33.5 33.8 34.4 34.4 34.4 33.9 33.2 32.2 31.6 30.8 30.4 30.5 31.1 31.7 32.4 32.9 33.6 34.2
Brown Green Bay UW ppb 42.1 40.5 39.3 38.7 38.3 37.4 36.6 36.3 36.4 36.2 36.5 37.5 38.4 39.9 41.4 41.4 41 40.3 39.8 39 38.2 37.6 36.9 36.4
Columbia Columbus ppb 39.2 38.5 37.3 36.5 35.9 35.3 34.8 34.4 34.7 34.7 35.5 36 36.8 37.6 38.7 39.6 40.5 41.4 41.9 42 41.6 41.3 41 40.7
Dane Madison East ppb 39.3 37.2 35.4 35.1 34.4 33.4 32.8 32.5 32.7 33.5 34.5 34.6 35.6 36.6 37.6 38.8 40.3 41.5 42.2 42.6 42.3 42 41.5 40.7
Dodge Horicon Wildlife Area ppb 43.8 42.4 41 39.8 39.5 38.4 36.9 35.8 35.2 35.3 35.7 36.6 37.3 38.6 40 40.8 41.4 42 42.4 42.5 42.1 41.6 41.3 41.1
Door Newport Park ppb 52 50.8 49.9 49.2 48.7 47.4 45.5 44.4 43.7 42.9 42.2 41.4 42 42.2 43 42.9 42.2 41 39.4 37.7 35.5 33.6 32.5 31.9
Eau Claire Eau Claire DOT Sign Shop ppb 38.6 38.8 38.8 38.8 39.3 38.2 36.9 36.4 35.7 34.6 33.2 32.5 32.8 33 34 34.1 34.4 34.9 36 36.3 36.1 36.1 35.5 34.8
Fond du Lac Fond Du Lac ppb 39.7 38.4 37.2 36.2 36 35.6 35.1 34.4 33.9 34.3 34.6 35.1 35.6 36.7 37.7 38.2 38.5 38.7 38.6 38.5 38.3 37.8 37.5 37.5
Forest Potawatomi ppb 43.3 41.7 40.4 39.3 38.8 38.6 38.9 38.9 38.9 39.7 40.5 41.1 41.2 40.8 39.5 38.1 37 35.1 33.5 32.4 31.6 30.9 30.7 31
Jefferson Jefferson-Laatsch ppb 40.9 38.4 35.4 34 32.7 31.6 30.7 30 30 31.5 34 35.1 35.8 37.1 38.1 39.4 40.6 41.4 41.9 41.9 41.6 40.9 40.2 39.3
Kenosha Chiwaukee Prairie ppb 51.9 50.9 48.8 46.2 45.2 43.2 40.9 38.9 37.2 36.3 36.3 37.2 37.7 38.3 39.5 40.6 41.6 42.6 43.4 43.9 43.7 43.4 42.7 41.6
Kenosha Kenosha-Water Tower ppb 51 50 48.1 45.6 44.4 41.5 39 37 35.5 35 35.3 36.4 37.1 38.6 40 41.2 42.3 43.3 44.1 44.3 43.8 43.3 42.4 41.4
Kewaunee Kewaunee ppb 53.5 52.9 52.2 51 50.6 47.9 45.2 43.3 41.7 40.3 38.9 38.4 39.1 40.3 41.6 41.9 41.5 41 40.3 39.3 38.3 37.6 36.8 36
La Crosse La Crosse DOT ppb 29.8 28.1 28.1 29 29.5 30.5 31.4 32.4 33.1 34.1 33.7 33.5 33.9 34.9 36.4 38 39 39.6 40.1 40.4 40.5 40.5 39.8 38.9
Manitowoc Manitowoc ppb 49.5 48.9 48.3 47.9 47.5 45 42.5 40.3 38.5 36.9 35.3 33.8 34.5 35.8 37 37.5 37.4 37 36.7 36.3 36 35.4 35 34.5
Marathon Lake Dubay ppb 40.3 38.9 38 37.4 36.8 36.9 36.9 37.2 38 38.3 38.6 38.8 38.4 37.4 37.4 37.3 37.3 37.4 37.3 37.4 38.1 38.7 38.3 37.9
Milwaukee Bayside ppb 52.9 51.4 49.6 47.6 46.6 43.7 40.8 38.7 37.1 36.7 36.7 36.7 37.3 38.6 40.2 41.2 41.9 42.2 42.4 42.6 42.4 41.9 41.1 40.6
Milwaukee Milwaukee-16th St. Health Center ppb 37.1 37.3 36.8 36.6 36.4 34 32 30.8 30 29.6 29.8 30.3 30.9 32.5 33.9 34.8 35.4 36 36.2 36.2 36 35.4 34.6 34
Milwaukee Milwaukee-UWM UPark ppb 49.2 47.9 45.7 43.8 42.8 39.9 37.1 35.4 33.9 33.6 34.5 35.1 35.8 37.5 39.1 40.1 41.1 41.8 42.1 42.3 42.2 41.5 40.7 39.9
Outagamie Appleton ppb 36.2 35.3 34.9 34.3 34.5 34.3 33.9 35.1 35.7 35.4 35.4 36.5 37.4 38.8 39.9 39.6 39.4 39.4 39.3 39.1 38.6 38.4 38.5 38.3
Ozaukee Grafton ppb 50.4 49 47.4 45.7 44.8 42.4 40.1 38.2 36.6 36.2 36.2 36.3 36.9 37.9 39 40 40.6 40.8 41 41.2 41.1 40.8 40.4 40
Ozaukee Harrington Beach Park ppb 52.4 51.4 49.5 47.5 46.8 44.4 41.9 40 38.7 37.7 37.8 38 38.4 39.3 40.6 41.5 41.6 41.5 41.5 41.4 41.2 40.9 40.4 40.1
Racine Racine-Payne & Dolan ppb 51.6 51 49.6 47.4 46.7 43.9 41.4 39.3 37.8 36.4 35.8 36.3 36.9 38.2 39.6 40.8 41.8 42.7 43.4 43.9 43.8 43.4 42.6 41.5
Rock Beloit-Converse ppb 39.1 36.4 34.1 32.7 31.4 30 29.5 29.2 29.3 30.6 32.1 33.1 33.9 35.6 36.9 38.4 40.1 41.4 42 42.3 42 41.1 40 38.4
Sauk Devils Lake ppb 36.5 35.6 35.7 36.2 35.7 35.4 35.1 35 36.8 36.9 36.2 36 36.4 36.7 37.5 38.5 39.6 40.6 41.3 41.6 41.6 41.5 41.3 41.1
Sheboygan Sheboygan-Haven ppb 45.6 43.9 42.3 41.1 41.2 40.5 39.3 38.1 37.4 37.3 37.2 37.7 38 38.6 39.4 40 40.1 40.1 39.9 39.6 39.6 39.2 38.8 38.7
Sheboygan Sheboygan-Kohler Andrae ppb 52 51.1 49.9 47.6 47.9 45.2 41.8 38.9 36.9 35 33.8 34.3 35 36.4 38.2 39.6 40 40.1 40 40 39.9 39.8 39.3 38.9
Vilas Trout Lake ppb 37.8 36.4 35.9 35.3 35.3 37.1 37.6 38 38.6 39.2 39.7 39.9 38.9 37.5 35.8 34.1 32.9 31.8 30.9 30.6 30.4 30.8 31.4 32.1
Walworth Elkhorn ppb 41 39.4 37.8 36.4 36 34.9 33.7 32.6 31.9 31.5 32.1 33.1 34 35.4 37.1 38.5 40 41.5 42.6 42.9 42.7 42.2 41.2 40.2
Waukesha Waukesha-Cleveland Ave. ppb 46.8 45.7 44.1 43.2 42.8 40.3 38.1 36.7 35.4 34.8 35.6 36.3 37 38.3 39.8 40.7 41.7 42.3 42.7 43 42.8 42.2 41.4 40.8