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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 52.2 51.8 51.4 51 50.5 50.2 49.8 49.4 48.8 48.2 47.6 47 46.5 46.1 45.9 45.8 45.8 46 46.1 46.1 46.1 45.8 45.1 44.2
Brown Green Bay UW ppb 48.1 47.5 46.6 45.3 44.2 43.4 43.1 42.9 42.9 43.1 43.4 43.9 44 44.3 44.6 45.4 45.9 45.6 45.7 45.4 44.9 43.6 41.3 39.7
Columbia Columbus ppb 43.5 43.1 42.6 42.4 41.9 39.7 37.5 35.7 33.8 31.7 29.5 31.1 33.4 36.2 39 41.5 44.2 46.9 49.3 48.8 46.8 45 43.5 42
Dane Madison East ppb 39 38.7 38.1 37.5 36.2 33.7 31.2 29.1 27.2 25.1 23.9 25.1 27.6 31.5 35.3 38.8 42.4 45.6 47.1 45.8 43.8 42.7 40.9 38.9
Dodge Horicon Wildlife Area ppb 43.9 43.5 42.8 41.7 40.2 38.8 37.3 36.2 35.4 34.5 33.4 32.9 34.6 36.8 39.6 42.4 44.7 46.6 48.4 49.6 48.1 45.9 44 42
Door Newport Park ppb 52.6 52.4 52.2 52 51.6 51.1 50.5 50.3 50.2 50.2 50.2 50.2 50.2 50.2 50 49.6 48.9 47.8 46.5 45.1 43.8 41.9 40.5 39.1
Eau Claire Eau Claire DOT Sign Shop ppb 46.7 45.8 44.3 43 42.2 41.3 40.4 39.4 38.4 37.8 37.7 37.3 36.3 35.1 33.9 32.7 31.7 31.1 31.1 31.9 33.1 34.4 35.5 36.5
Fond du Lac Fond Du Lac ppb 41.7 41.3 40.8 40.3 39.2 38.3 37.2 36.1 35.2 34.3 33.4 32.7 32.8 33.5 34.5 36.8 39 40.8 42.3 43.7 44 42.8 41.9 40.4
Forest Potawatomi ppb 47.1 46.9 46.6 46.2 45.6 45.3 45.3 45.2 45.2 45.3 45.4 45.5 45.5 45.3 45 44.6 44.2 43.6 42.8 41.8 40.7 39.2 37.7 37.1
Jefferson Jefferson-Laatsch ppb 41.4 41 40.3 39.4 37.8 35.5 33.2 31.4 29.9 29.5 29.5 30.2 32.4 35.8 39.5 42.7 44.9 46.1 47 46.7 44.8 42.8 40.9 39.1
Kenosha Chiwaukee Prairie ppb 44.6 44 43.2 42.5 41.9 41.7 41.1 40.5 39.7 39.1 39.1 40 41.2 42.6 44.9 47.3 49.1 50.7 51.1 50.2 48.8 46.2 43.4 41.3
Kenosha Kenosha-Water Tower ppb 43.7 43.1 42.1 41.5 39.7 38.6 37 34.5 32.6 31.6 32.2 33 35.4 38.2 41.5 45.7 48.7 50.5 50.5 50 48.5 45.5 42.8 40.6
Kewaunee Kewaunee ppb 54.2 52.6 50.8 49 47.9 47.2 46.8 46.5 46.8 47.7 48.9 50.1 50.6 50.9 51.1 51.8 53 54.1 55.2 56.1 56.1 54.5 52.3 49.8
La Crosse La Crosse DOT ppb 43.9 43.6 42.8 42.1 41.1 39.2 37.9 36.2 34.9 33 31.7 30.6 29.7 29.8 29.4 29.6 29.1 30.2 31.9 33.5 34.8 35.8 37.1 37.9
Manitowoc Manitowoc ppb 47.3 45.8 44.5 43.4 42.3 41.5 41.2 41.3 41.6 42 42.1 41.7 41.3 41.5 42.2 43.5 45.2 47 48.7 50.8 51.9 50.7 48.4 46
Marathon Lake Dubay ppb 47.8 47.2 46.7 46.2 45.5 44.9 44.4 43.6 42.7 41.9 41.1 40.2 39.8 39.6 39.3 39.2 38.9 38 36.6 35.5 35 35.3 35.7 36
Milwaukee Bayside ppb 45.6 44.6 43.4 41.7 39.7 37.6 36.3 35.8 35.4 35.5 36.5 37.5 39.3 42.1 44.5 46.6 48.4 49.5 49.5 49.4 48.7 46.4 43.9 41.7
Milwaukee Milwaukee-16th St. Health Center ppb 38.9 38.9 38.3 37.3 35.7 34.5 32 29.5 27.8 26.6 26 24.8 25.9 27.9 32.1 36 38.7 40.4 41.6 43.7 43.9 41.7 39.2 37.7
Milwaukee Milwaukee-UWM UPark ppb 46 45.1 43.8 42 39.8 38.2 36.9 36 35.1 34.8 35.5 36 37.4 39.6 41.9 44.1 46.1 47.3 47.2 47.7 47.7 45.4 42.9 41.1
Outagamie Appleton ppb 46.6 46 45.1 44.1 43.1 42.4 41.5 40.7 40.3 40.1 39.9 39.4 38.9 38.5 38.9 39.1 39.6 40.4 41.5 42.2 42.7 41.8 41.2 41.4
Ozaukee Grafton ppb 46.1 45.4 44.3 43 41.5 40.4 39.2 38.2 37.8 38.1 38.8 39.7 41 43 45.5 48 49.7 50.7 51 50.8 50.3 48.4 46 43.9
Ozaukee Harrington Beach Park ppb 49.1 47.9 46.5 45 43.3 42 40.7 39.6 38.8 38.2 37.9 37.9 38.8 40.5 43.1 46.1 48.9 51.3 52.7 53.1 52.7 51 48.1 45.6
Racine Racine-Payne & Dolan ppb 42.3 41.2 40.6 40.6 40.5 40.2 39.3 38.3 37.5 37.1 36.7 36.1 37.2 38.9 41.4 44.1 46.3 48.3 49.4 50 48.8 46.5 43.8 41.8
Rock Beloit-Converse ppb 41.8 40.7 39.3 37.3 34.1 31.4 28.5 28 27.9 28.3 28.7 30.8 35.1 39.7 44.2 46.3 47.7 48.5 48.4 46.6 44.7 42.6 40.4 38.7
Sauk Devils Lake ppb 42.5 42.2 41.6 40.8 40.1 39.1 37.7 36.4 35.1 33.7 32.3 32 32.8 34.8 37.2 39.2 41.3 43.1 44.3 44.2 43.8 42.7 41.3 40
Sheboygan Sheboygan-Haven ppb 49.1 47.6 46.2 44.8 43.3 42 41 40.1 39.6 39.1 38.5 38 38.3 39.3 41.2 43.8 46.2 48.1 49.7 50.2 50.1 49.1 46.3 43.9
Sheboygan Sheboygan-Kohler Andrae ppb 50.5 49.3 48 46.8 45.6 44.6 43.8 43.1 42.4 41.4 40.5 40 40.2 41.4 43.5 46 49 52.2 55.2 57.4 57.7 56 53 50.1
Vilas Trout Lake ppb 51.6 51.7 51.6 51.5 51.3 51 51 50.9 50.5 50 49.4 48.9 48.3 47.9 47.2 46.6 46.3 46 45.5 44.9 43.9 42.1 40.6 39.9
Walworth Elkhorn ppb 41 40 38.7 37.6 35.9 34.3 32.6 31.4 31.2 31.9 32.6 33.7 36.4 39.7 43.3 46.4 47.8 48.4 48.6 47.9 45.6 42.9 40.8 38.9
Waukesha Waukesha-Cleveland Ave. ppb 42.1 41.7 40.9 40.3 39.6 36.7 33.4 30.5 29.4 28.3 28.7 30.7 32.9 36.5 41 45 47.3 49.4 49.9 49.7 48.3 45.5 42.8 41