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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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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 48 48.9 49.6 50.3 51.1 51.7 50.8 49.7 48.3 47.4 47.1 46.6 46.4 46.6 46.2 46.4 46.9 47.2 47 47 46.8 46.8 47.3 47.6
Brown Green Bay UW ppb 47.2 46.3 45.6 45 44.5 43.7 43.1 42.7 42.5 42.6 42.7 42.9 43.2 43.9 44.9 45.7 46.3 46.7 47.5 48.4 48.9 49.2 49.1 49.1
Columbia Columbus ppb 45.8 44.7 44.1 44 43.9 44 44 44 44.4 44.6 44.4 44.2 44.3 44.5 44.8 45.3 45.8 46.4 47 47.2 46.7 44.8 42 39
Dane Madison East ppb 47.3 46.5 45.7 45 44.6 44.1 43.5 43.1 42.8 42.2 41.7 41.4 41 40.9 40.9 41.2 41.7 42.7 43.2 43.1 41.8 39.6 37.4 35
Dodge Horicon Wildlife Area ppb 52.1 50.7 49.3 48.2 47.3 46.7 46.3 46 45.9 45.9 46.1 46.3 46.6 47.2 47.8 48.5 48.8 49 49.1 49.2 48.8 48 46.4 43.2
Door Newport Park ppb 50 49.3 48.8 48.4 48.2 47.9 47.5 46.9 46.4 46.2 46.3 46.4 46.5 46.6 47.1 48 49.2 50.2 50.8 50.8 51.1 51.4 51.5 51.2
Eau Claire Eau Claire DOT Sign Shop ppb 54.6 53.3 51.7 50.4 49.6 48.9 48 47.1 46.3 45.7 45.6 45.3 44.7 43.9 43.1 42.4 41.9 41.6 41.3 41 40.9 40.8 40.6 39.7
Fond du Lac Fond Du Lac ppb 49 47.6 46.2 45.3 44.7 44.2 44.1 44.1 44.2 44.3 44.5 44.6 45.1 45.7 46.3 46.7 46.9 47.3 47.5 47.6 47.4 47.1 46.6 46
Jefferson Jefferson-Laatsch ppb 48.5 47.4 46.3 45.7 45.5 45.2 44.7 44.4 44.2 43.8 43.5 43.2 43.2 43.6 44.2 45 46 47 47.7 48 47.6 44.7 41.5 38.1
Kenosha Chiwaukee Prairie ppb 52.8 51.7 50.6 49.9 49.4 48.4 47.8 47.1 46.5 45.9 45.4 45.5 46.3 47.1 48.3 49.7 51 52.2 52.8 52.7 53.4 54.1 53.4 50.9
Kenosha Kenosha-Water Tower ppb 50.9 49.9 49 48.2 47.6 46.9 46.4 45.8 45.1 44.6 44.3 44.4 44.8 45.7 46.9 48.1 49.4 50.5 51.1 50.8 50.3 50.3 49.2 46.2
Kewaunee Kewaunee ppb 53.5 53 52.5 51.7 50.7 49.3 47.8 46.6 45.9 45.4 45.1 45 45.3 46.3 47.6 48.7 49.3 49.9 50.8 51.7 52.4 52.8 52.9 52.9
La Crosse La Crosse DOT ppb 46.2 46.5 46.8 46.8 46.4 45.8 45.4 44.7 43.7 42.4 41.4 40.6 40.1 39.8 39.8 40.4 40.9 41.5 41.6 40.3 38.2 36 33.3 30.4
Manitowoc Manitowoc ppb 52 51.2 50.3 49.1 48.4 47.4 46.5 45.9 45.4 45.1 44.8 45.1 45.2 46.1 47 47.6 48.3 48.9 49.6 50.3 50.8 50.9 50.8 50.6
Marathon Lake Dubay ppb 52.6 51.2 49.8 48.3 46.8 45.5 44.2 43.4 43 42.6 42.5 42.7 43 43.4 43.9 44.1 44.3 44.6 44.9 45.1 45.3 45.4 45.3 45.1
Milwaukee Bayside ppb 51.6 50.7 49.9 49.3 48.4 47.7 47.5 47.3 47.2 47.1 47 47.1 47.5 48.2 49 49.5 49.8 50.1 50.2 50.4 50.7 50.2 49.3 48.8
Milwaukee Milwaukee-16th St. Health Center ppb 44.6 44.6 45.4 45.7 45.6 45.2 44.6 44.4 44.1 43.5 42.8 42.4 42.2 42.7 43.3 43.4 43.5 44.3 45.2 45.1 45.1 44.7 43.5 42.2
Milwaukee Milwaukee-UWM UPark ppb 51.4 50.4 49.7 49 48.2 47.4 46.8 46.6 46.5 46.3 46.1 45.9 46.2 46.8 47.6 48 48.2 48.6 48.9 48.9 49 48.5 47.5 46.7
Outagamie Appleton ppb 48.2 46.8 45.7 45.1 44.8 44.9 45.5 45.9 46 46.2 46.2 46.5 47 47.8 48.6 49.1 49.6 50 50.8 51.3 51.8 51.8 51.6 51.3
Ozaukee Grafton ppb 51 49.7 48.8 47.9 47 46.3 46.1 45.9 45.9 45.9 45.8 46.1 46.5 47.1 47.6 48.1 48.5 48.9 49.1 49.3 49.5 49.5 49.3 48.9
Ozaukee Harrington Beach Park ppb 51 50.3 49.6 48.5 47.7 47.1 46.5 46.1 45.9 45.7 45.8 46.2 46.5 46.9 47.3 47.8 48.5 49.4 50 50.3 50.6 50.9 51.1 51.1
Racine Racine-Payne & Dolan ppb 52.1 51 50.2 49.5 48.8 48.4 48 47.7 47.6 47.3 47 46.8 47.3 48.1 49 49.8 50.7 51.7 52.5 52.6 52 51.9 52 51.6
Rock Beloit-Converse ppb 45.5 44.7 43.7 42.9 42.1 41.6 41.2 40.6 39.6 39.1 39.3 39.7 40.3 40.8 41.2 41.9 42.6 43.1 42.8 41.9 39.5 37.2 34.5 32.2
Sauk Devils Lake ppb 49.6 48.7 47.8 47 46.5 46.1 45.5 45.1 45 44.7 44.4 44 43.5 43.3 43.1 43.2 43.5 44.2 44.2 43.8 42.3 39.8 37.3 34.4
Sheboygan Sheboygan-Haven ppb 50 49.4 48.8 48 46.9 46.1 45.5 44.8 44.3 43.9 43.8 44.2 45 45.8 46.5 47.2 48.1 49 49.9 50.6 50.9 51.1 51.2 51.1
Sheboygan Sheboygan-Kohler Andrae ppb 50.2 49.2 48 46.7 45.6 44.8 44.2 43.6 43 42.6 42.4 42.8 43.5 44.1 44.7 45.4 46.3 47.2 48.2 48.5 48.5 48.7 48.7 48.4
Vilas Trout Lake ppb 54.6 53.6 52.7 51.8 50.8 49.8 49.1 48.4 47.7 47.2 47.2 47.5 47.7 47.7 47.8 48.2 48.7 49.2 49.5 49.7 50.2 50.6 50.9 50.9
Walworth Elkhorn ppb 45.3 44.4 43.9 43.6 43.2 42.9 42.4 42 41.9 41.7 41.3 40.9 41.2 42 43 44.1 45.2 46.4 47.4 48.6 48.7 46.3 43.1 40.2
Waukesha Waukesha-Cleveland Ave. ppb 48.4 47.4 46.4 45.7 45.4 44.9 44.2 43.6 43 42.5 42 42 42.8 43.7 45.1 46 47 48.1 49.1 49.4 49.4 48.5 47.1 44.8