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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/31/2025 12:00 to 8/1/2025 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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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 3.3 1.9 0.9 1 1.1 1.2 1.4 1.9 4 6.7 9.2 11.7 14.3 16.8 19.3 21.6 22.6 23 23.4 23.8 23.7 22.4 20.2 17.4
Brown Green Bay UW ppb 16.6 15.6 14.4 13.3 12.3 11.5 11.2 11.2 11.3 11.9 12.9 14.1 15.7 17.3 18.9 20 21.2 21.7 21.5 21.4 21.1 20.5 20.1 19.6
Columbia Columbus ppb 18.9 17.7 16.6 15.6 14.6 13.7 12.8 12.3 12.2 12.5 12.7 13.2 14.2 15.2 16.2 17.3 18.3 19 19.3 19.2 18.7 17.9 17.1 16.3
Dane Madison East ppb 15.5 14.5 13.8 13.3 12.9 12.6 12.5 12 11.8 11.5 11.4 11.6 12.2 13 14 15.1 16 16.8 17.3 17.4 17 16.6 16 15.2
Dodge Horicon Wildlife Area ppb 18.8 17.8 16.6 15.5 14.4 13.8 13.5 12.9 12.5 12.4 13 13.9 15.1 16.5 17.8 19.1 20 20.4 20.5 20.2 19.7 19.1 18.3 17.3
Door Newport Park ppb 15.9 15.7 15.6 15.8 15.8 16.5 17.1 17.6 18.2 19.1 20.1 21 22.1 22.3 22.6 22.8 22.7 22.3 21.3 20.3 18.7 17.3 15.9 15.1
Eau Claire Eau Claire DOT Sign Shop ppb 15.4 14.8 14.8 14.2 13 12 11.1 10.5 10.1 10.3 11 11.9 12.9 13.7 14.4 15.2 15.6 15.5 15.1 14.3 13.5 12.9 12.7 12.4
Fond du Lac Fond Du Lac ppb 16.9 15.7 14.5 13.9 12.9 12.5 11.9 11.1 10.9 11.1 11.8 12.6 13.8 15.1 16.6 17.6 18.3 18.6 18.6 18.5 18.2 17.6 16.9 16.5
Forest Potawatomi ppb 10.4 9.3 8.5 7.9 7.5 7.3 7.3 7.6 8.8 10.5 12 13.5 15.1 16.7 18.1 19.3 19.6 19.6 19.2 18.4 17.6 17 16.6 16.3
Jefferson Jefferson-Laatsch ppb 15.8 14.7 13.7 13.4 12.9 12.7 12.5 12.3 12.5 12.6 13 13.6 14.4 15.3 16.7 18 18.9 19.5 19.8 19.8 19.3 18.5 17.6 16.5
Kenosha Chiwaukee Prairie ppb 21.4 20.2 19.4 18.8 18.5 18.7 20.6 22.7 23.2 22.9 22.3 21.7 21.3 21 20.6 20.3 20.2 20.3 20.5 20.8 21.2 21.8 22.3 23
Kenosha Kenosha-Water Tower ppb 22.6 21.4 20.6 19.9 19.7 19.9 20.5 21.2 21.8 21.9 21.4 21.1 20.8 20.4 20.1 20.1 20.3 20.3 20.1 20 20 19.8 19.6 19.6
Kewaunee Kewaunee ppb 17.9 16.9 15.6 14.5 13.7 13.1 12.6 12.7 13.1 13.4 14.3 15.3 16.4 17.8 19.5 20.7 21.5 22.2 22.7 23.2 23.6 23.8 23.6 23.5
La Crosse La Crosse DOT ppb 16.6 15.8 15.4 15.7 15.7 15.4 14.8 14.3 13.8 13.5 13.4 13.2 13.3 13.6 13.6 13.5 13.3 13.1 13 12.9 13.1 13.3 13.7 14
Manitowoc Manitowoc ppb 16 15.4 14.6 13.7 12.5 11.4 10.6 10.3 10.2 10.2 10.4 11 12.3 13.8 15.5 16.9 18 19.1 20.1 20 20.1 20 19.1 17.8
Marathon Lake Dubay ppb 17.5 16.2 15.1 13.9 12.8 12.4 12.1 12 12.2 12.7 13.6 14.6 15.8 16.9 18.2 19 19.5 19.7 19.6 19.6 19.4 19.2 19 19
Milwaukee Bayside ppb 21.4 20.5 19.7 19.1 19.5 20.2 19.7 18.8 18 17.4 17.3 17.8 18.4 19 19.7 20.3 20.9 21.3 21.8 22.1 22.2 21.9 21.3 20.4
Milwaukee Milwaukee-16th St. Health Center ppb 20.1 19.9 19.7 19.7 19.1 18.7 18.1 17.2 16.1 15.2 14.4 14.1 15 15.7 16.8 17.8 18.6 19.3 19.8 20 19.9 20.1 19.5 18.8
Outagamie Appleton ppb 17.4 16.3 15.4 14.4 13.4 12.5 11.8 11.5 11.4 11.4 11.8 12.3 13.4 14.6 15.9 17.1 18.3 19.4 20.2 20.7 20.3 19.8 19.2 18.7
Ozaukee Grafton ppb 20 19.3 18 17.1 16.8 17.1 16.8 16 15.3 15.2 15.9 16.9 18.2 19.3 20.4 21.2 21.8 22 22.1 22.1 22 21.6 20.7 19.6
Ozaukee Harrington Beach Park ppb 18.8 17.8 17 16.6 16.6 16 15.3 14.4 13.9 14.1 14.6 15.3 16.2 17.1 17.9 18.7 19.1 19.6 19.9 20 20.1 20.1 20 20
Racine Racine-Payne & Dolan ppb 22.6 21.8 20.8 20.3 20.2 20.4 21.3 21.6 21.1 20.5 20.4 20.2 20 20.1 20.4 20.6 20.8 20.8 20.7 20.7 20.8 20.6 19.9 19.8
Rock Beloit-Converse ppb 19.1 17.5 15.9 14.4 13.4 13.2 13.2 13.2 13.6 14.3 15 15.8 16.9 17.6 18 18.4 18.6 18.5 18.5 18.5 18.1 17.5 16.8 16.3
Sauk Devils Lake ppb 13.5 13 12.5 12.7 13 13.4 13.5 13.5 13.3 13.3 13.4 13.3 13.5 13.9 14.5 15.1 15.6 15.7 15.5 15.1 15.4 15.6 15.4 15.2
Sheboygan Sheboygan-Haven ppb 17.5 16.7 16 15.4 14.2 12.8 11.9 11.3 11.1 11.2 11.7 12.5 13.7 14.9 15.8 16.7 17.4 17.9 18.3 18.4 18.6 18.4 18.1 17.6
Sheboygan Sheboygan-Kohler Andrae ppb 21.3 20.2 19.5 19.4 18.3 17.2 16.5 15.9 15.9 16.3 16.8 17.4 18.2 19 19.5 20.1 20.7 21.2 21.6 22 22.2 22.3 22.4 22.5
Vilas Trout Lake ppb 8.1 7.5 6.7 6.4 6.3 6.3 6.6 7.5 8.7 9.9 12 14.1 16.1 17.9 19.3 20 20.5 20.1 18.7 16.9 15.4 14.5 14 13.5
Walworth Elkhorn ppb 18.2 16.5 15.4 15.1 14.9 15.1 15.1 14.8 14.8 15.2 15.6 16.1 16.4 16.8 17.1 17.6 18.1 18.6 18.6 18.4 17.9 17.4 17.1 16.7
Waukesha Waukesha-Cleveland Ave. ppb 15.9 14.8 14.3 13.9 13.8 14.2 15 15.1 15.2 15.1 15 15.2 16 16.9 17.6 18.7 19.5 20 20.2 20.1 19.5 18.6 17.8 16.6