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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 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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Wednesday, 
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 50.2 49 46.6 43.6 39.9 36.3 33.1 30.2 27.9 26.5 26.4 27 27.8 28.7 29.8 31.6 33 33.8 33.9 32.9 30.6 28.3 26.4 23.9
Brown Green Bay UW ppb 59.8 58.6 57 54.4 51.5 48.5 46 44.1 42.7 41.9 41.7 41.7 42.1 42.5 42.7 42.7 42.3 41.8 41.3 40.7 40.6 40.4 40 38.7
Columbia Columbus ppb 52.5 50.4 48.5 46.7 45.2 43.1 41.5 40.9 40.6 40.9 41.6 42.5 44 46 47.6 48.2 48.4 48 47.5 46.6 45.2 43.2 41 38.5
Dane Madison East ppb 56.3 54.1 52.1 50.4 48.4 46.6 44.7 43.3 42.7 42.5 42.5 42.8 43.9 44.8 45.6 46.2 46.1 45.9 45.5 44.8 43.7 42.3 40.5 38.3
Dodge Horicon Wildlife Area ppb 53.4 51 48.5 47 45.7 43.9 42.6 41.7 40.5 40.2 40.5 41.2 42.3 43.4 44 43.9 43.2 42.2 40.9 39.6 38.2 36.8 35.8 34.4
Door Newport Park ppb 60.4 58.7 57.6 55.9 53.9 52.3 51 49.7 48.5 47.5 46.5 45.2 44.4 44.1 43.7 43.4 42.5 41.1 39.5 37.5 34.8 31.4 27.5 23.1
Eau Claire Eau Claire DOT Sign Shop ppb 51.3 48 44.8 42.6 40.1 38.7 37.6 36.6 35.9 35.2 35.1 35.4 36.2 36.8 37.5 38.5 39.2 39.7 40.2 40 37.6 33.1 28.2 22.9
Fond du Lac Fond Du Lac ppb 55.6 53.2 51.2 49.9 48.2 45.9 43.6 42.1 41.4 41.3 41.5 42.1 43.1 44.4 45.6 46.1 46.2 46 45.6 44.6 43.5 42.2 40.3 38.4
Forest Potawatomi ppb 56 55.2 54.2 53 51.4 49.3 47 44.8 43.1 41.6 40.4 39.2 38.8 38.6 38.8 39.1 39.2 39.4 39.6 39.4 38.3 37.2 35.8 33.9
Jefferson Jefferson-Laatsch ppb 46.1 42.5 39.1 36.3 34.5 34.2 33.7 34 36.1 37.8 39.4 41.4 44 46.5 48.7 49.9 49.9 49.4 49 47.8 45.2 41.3 37.3 33.6
Kenosha Chiwaukee Prairie ppb 61.7 59.4 57.4 55.6 53.2 50.5 47.9 46.6 46.4 46.8 47.1 48.1 50.1 51.9 54.8 57.7 60.2 62.3 63.4 62 61.4 59 54.9 50.3
Kenosha Kenosha-Water Tower ppb 60.3 57.9 55.6 52.7 49.6 47 44.4 43.8 43.7 44 44.7 46.2 47.9 50.3 52.7 54.1 54.9 55.3 55 52.9 50.5 47.9 44.7 41.4
Kewaunee Kewaunee ppb 59.5 58.7 57.7 57.7 57 53.2 50 48 46.2 45.5 45.2 45.5 45.6 46.2 46.7 46.6 46.9 47.8 49 50.4 51.5 52.3 52.1 51
La Crosse La Crosse DOT ppb 42.9 40.4 37.8 36.3 35.9 35 34.6 34.5 34.7 35.8 37.9 39.3 40.5 42.9 44.9 47 49.2 51.1 52.9 53.8 53.5 52.8 50.8 48.3
Manitowoc Manitowoc ppb 53.7 52.1 50.7 49.2 46.7 44 42 40.6 40 39.6 39.5 39.7 40.5 41.2 41.3 41 39.9 38.2 36.4 35.5 34.3 33.2 31.8 29.9
Marathon Lake Dubay ppb 55.4 53.7 51.6 49.6 47.4 44.9 42.7 41.1 39.6 38.7 38.3 38.1 38.3 38.9 39.2 39.5 39.6 39.4 38.8 38.2 37.4 36.5 35.5 34.3
Milwaukee Bayside ppb 58.4 55.4 52.5 49.7 46.9 44.7 43.2 42.4 42.4 43.2 43.9 44.9 46.1 47.2 48.1 48.7 48.6 47.6 46.6 45.5 44.2 42.8 41.2 41.4
Milwaukee Milwaukee-16th St. Health Center ppb 54.6 52.7 50.8 49.7 47.2 44.8 43.2 42.7 42.7 43.2 43.7 44.2 45.4 46.7 47.8 48.4 48.2 47.2 45.9 44.6 43.1 41.6 39.8 37.9
Milwaukee Milwaukee-UWM UPark ppb 59.2 56.6 54.1 51.9 49.2 46.8 45.1 44.3 44.3 45.1 45.6 46.4 47.7 49.2 50.5 51.1 51 49.9 48.8 47.4 45.8 44.1 42.3 41.6
Outagamie Appleton ppb 59.1 57.5 55.6 53.2 50.6 47.6 45.1 43.4 42.2 41.6 41.6 41.7 42.3 43.2 43.9 44.1 43.9 43.5 42.3 41 39.4 37.7 35.8 33.6
Ozaukee Grafton ppb 54.3 50.9 47.8 45.3 42.5 40.8 40.1 39.7 39.8 40.6 41.5 42.5 44.1 45.9 47.2 47.6 47.4 46.9 46.5 45.7 43.8 42.1 40.5 40.3
Ozaukee Harrington Beach Park ppb 58.7 55.7 53.2 51.6 49.5 47.5 45.4 43.9 43.1 43.2 43.7 44.4 45.6 47 47.9 48.3 48.4 48.1 47.4 46.3 44.9 43.3 44 44.3
Racine Racine-Payne & Dolan ppb 62.5 59.4 55.7 52.4 49.7 47.2 45.2 44.3 44.4 44.9 46.1 47.2 48.2 50.2 52 53.2 53.5 52.9 51.5 49.7 48 44.8 41.4 38.3
Rock Beloit-Converse ppb 51 46.5 42.9 40.6 38.2 35 33.2 33.5 34.9 38.6 42.5 43.9 44.5 47 49.1 50.1 50.8 50.6 49.7 48.6 47.2 45.7 43.5 41.9
Sauk Devils Lake ppb 56.2 54.4 52.6 50.8 49.1 47.2 45.2 43.6 42.8 42.6 42.2 42.2 42.3 42.5 43 43.1 42.9 42.8 42.9 42.8 42.1 40.4 38.1 35.4
Sheboygan Sheboygan-Haven ppb 58.2 56.1 54.2 52.5 50.4 48.2 45.9 44.3 43.6 43.4 43.7 44.6 46.1 47.6 48.6 49 48.9 48.3 47.5 46.1 44.8 45 45 44
Sheboygan Sheboygan-Kohler Andrae ppb 52.8 51 49.3 47.8 46.3 44.6 43 41.8 41.2 41.5 42.3 43.8 45.3 46.8 47.7 48.2 48.2 47.7 47.1 45.8 44.2 44.9 45.9 45.9
Vilas Trout Lake ppb 53.6 52.7 51.4 49.8 47.6 45.1 42.4 39.9 37.7 35.7 34.1 33 32.7 33 33.7 34.4 34.9 35.2 35.3 34.4 32.6 30.1 27.6 24.8
Walworth Elkhorn ppb 57.4 53 50.1 47.4 44.7 42.4 41.1 40.8 40.8 42.4 44.4 46.3 48.7 51.2 53.4 55 56 55.7 54.3 52.9 51 48.3 45.2 42.3
Waukesha Waukesha-Cleveland Ave. ppb 55.2 52.6 49.9 47.9 45.4 43.3 42.7 42.2 42.3 43 43.9 44.7 46.1 47.8 48.9 49.6 49.5 48.6 47.6 45.8 43.8 41.7 39.2 37.5