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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups PM2.5 levels is in effect from 8/11/2025 10:00 to 8/12/2025 15:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Chippewa,Clark,Door,Douglas,Dunn,Eau Claire,Florence,Forest,Iron,Jackson,Juneau,Kewaunee,La Crosse,Langlade,Lincoln,Marathon,Marinette,Menominee,Monroe,Oconto,Oneida,Outagamie,Pepin,Pierce,Polk,Portage,Price,Rusk,Sawyer,Shawano,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Washburn,Waupaca,Waushara,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 25.1 25 25 24.8 24 23 22.3 22.2 22.1 21.9 21.7 21.6 22 22.7 23.2 23.3 23 22.6 21.9 19.8 16.9 13.8 10.8 10.2
Brown Green Bay UW ppb 30.1 28.7 27.4 26.3 25.5 24.3 22.9 21.7 21.1 20.9 21 21.3 21.7 22.4 23.2 24.1 24.9 25.4 25.2 24.6 23.9 22.9 21.5 19.7
Columbia Columbus ppb 27.3 25.3 23.5 22.2 21.1 19.7 18.8 18.5 18.1 18.3 19.6 21.4 23.9 26.8 29.3 31.3 32.8 34 33.8 33.4 32.9 31.9 30.2 28
Dane Madison East ppb 30.8 29.1 27 25 23.6 22.1 20.5 19.2 18.4 18.7 20.1 22.3 24.7 27.1 29.6 32 33.8 34.9 35.1 33.9 31.5 28.7 25.8 22.1
Dodge Horicon Wildlife Area ppb 30.8 28.5 25.9 23.6 21.6 19.5 18 17 16.8 17.1 18.6 20.6 23 25.5 28 30.3 32 33 32.8 32 30.8 29.1 27.1 24.8
Door Newport Park ppb 28.6 27.3 26.3 25.3 23.6 22 20.8 19.8 19.2 18.7 18.5 18.8 19.7 20.7 21.9 23.3 24.5 25.5 25.7 24.6 22.9 21.2 19.7 17.5
Eau Claire Eau Claire DOT Sign Shop ppb 22.6 21 19.6 18.4 17.2 15.8 15.2 15.2 15.4 15.2 26.9 27.1 26.9 25.7 23.5 20.5 17.2 13.8
Fond du Lac Fond Du Lac ppb 29.7 27.6 25.3 23.3 21.4 18.9 17.2 16.6 16.6 17.3 19.1 21.2 23.6 26.3 28.5 30 31.1 31.4 30.9 29.8 28.3 26.8 25.1 23.3
Forest Potawatomi ppb 26.1 24.7 23 21.7 20.8 20.2 19.7 19.4 19.5 19.6 20.1 20.5 20.8 21.4 22.3 23 23 23 22.6 22.3 22.1 21.7 21 20.3
Jefferson Jefferson-Laatsch ppb 23.8 22 20.3 19.8 19.4 19.4 19.4 18.9 18.6 18.9 19.8 21.3 23.1 25.4 27.5 29.8 31.5 32.5 32.8 32 30.3 28.7 27.1 25
Kenosha Chiwaukee Prairie ppb 28.5 24.5 21.4 20.2 19.9 19.5 20 20.6 21.4 22.2 23.2 24.1 24.9 25.7 26.1 26.1 26.1 26.4 26.6 27 27.6 28.2 28.6 27.7
Kenosha Kenosha-Water Tower ppb 23.1 20.3 18 16.4 15.5 15.2 15.7 17.1 18.1 18.7 20 21.2 22.8 24.1 25.3 26 26.7 27.4 27.6 27.7 27.7 27.7 27.2 25.1
Kewaunee Kewaunee ppb 28.4 26.6 25 23.8 22.8 21.9 21.1 20.1 19.6 19.5 19.8 20.3 21.1 22 22.9 23.5 23.9 24.6 25.1 25.2 23.9 22.3 20.6 19.1
La Crosse La Crosse DOT ppb 34.4 31.8 28.6 26 24.1 22.3 21 20.5 20.2 20.9 21.9 23.3 25.1 27.6 29.9 31.7 33.5 34.6 35.4 35 33.6 31.6 29.6 27.2
Manitowoc Manitowoc ppb 23.3 21 18.9 17.6 17.4 17 16.3 15.6 16 16.3 17.2 18.5 19.1 19.9 20.4 21.5 22.2 22 21.5 19.9 18.4 16.1 13.7 10.8
Marathon Lake Dubay ppb 26.8 25.2 23.7 22.3 20.9 19.6 18.8 18.4 18.8 19.5 20.3 21.3 22.4 23.8 24.8 25.5 25.5 25.2 24.5 23.3 22.4 21.7 20.8 19.8
Milwaukee Bayside ppb 26.3 24.3 22.6 21.4 21 20.5 20.6 20.9 20.7 21.1 21.7 22.3 23 23.8 24.5 25.2 25.6 25.9 25.9 25.9 25.8 25.2 23.5 21
Milwaukee Milwaukee-16th St. Health Center ppb 31.9 29.9 27.7 26.1 24.9 23.5 22.4 21.5 20.8 20.8 21.3 21.2 21.7 22.5 23.3 24 24.9 25.5 25.4 25.3 25.3 25.2 24.9 23.3
Outagamie Appleton ppb 25.4 23.4 22 20.6 19 17.5 16.2 15.7 15.6 16.2 16.9 17.7 18.8 20.3 22 23.4 24.2 24.9 25.3 24.5 23.4 22.4 21.1 19.2
Ozaukee Grafton ppb 26.6 24.9 23.2 21.9 21.1 20.5 19.9 19 18.7 19.1 19.9 20.8 21.9 23.3 24.6 25.7 26.5 26.7 26.9 27 26.8 25.6 23.1 20.5
Ozaukee Harrington Beach Park ppb 28.5 26.8 25.1 23.9 22.9 21.8 20.5 19.5 19.1 19.2 19.5 19.9 20.5 21.4 22.5 23.3 24 24.4 24.7 24.6 24 23.2 21.3 18.7
Racine Racine-Payne & Dolan ppb 38 34.2 30.4 26.8 24.4 23.3 22.4 22 21.9 22.4 23 23.3 23.9 24.2 24.5 24.9 25.3 25.7 25.9 26.2 26.4 26.5 26.4 25.4
Rock Beloit-Converse ppb 22.1 20.7 19.6 19.4 19.8 20.1 20.4 20.8 20.8 21.8 23.3 25.4 27.6 30 32.4 35.2 37.9 39.5 40.1 38.8 36.7 34.9 33.1 30.6
Sauk Devils Lake ppb 28.7 27.1 25.2 24.6 23.6 21.8 20.5 19.5 19.1 19.9 21.3 23 25 26.8 28.7 30.6 31.9 32.2 31.6 29.8 27.4 24.8 22.3 19.7
Sheboygan Sheboygan-Haven ppb 28 26.1 24 22.4 21 19.7 18.5 17.9 17.8 17.9 18.4 19.1 20 21.3 22.5 23.4 24.2 24.4 24.4 24.1 23.3 21.8 19.9 17.9
Sheboygan Sheboygan-Kohler Andrae ppb 25.6 23.4 21.6 20.7 20 19.9 19.5 18.7 18.7 19 19.4 20 20.9 22.2 23.9 25.2 26 26.5 26.8 26.7 26.4 24.3 21.4 18.1
Vilas Trout Lake ppb 25.4 24.2 23.4 23.2 23.2 23.3 23 22.6 22.2 22 21.7 21.4 21.2 21.3 22.1 23.2 24.1 24.7 25.1 24.8 23.5 21.8 19.6 16.8
Walworth Elkhorn ppb 29.7 27.4 25.4 23.8 22.4 21 20.1 19.5 19.5 20.4 21.8 23.5 25.8 28.3 31 33.5 35.4 36.6 37 36.3 34.5 32 29.4 27.1
Waukesha Waukesha-Cleveland Ave. ppb 31.1 28.5 26.3 24.3 22.8 21 19.6 18.5 17.8 18.8 20 22 24.2 26.9 29.7 32.2 33.6 33.6 33 32.1 30.5 28.4 25.6 22.2