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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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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 9.7 7.9 6.5 6.3 6.7 7.3 8 8.9 10.3 12 14 16.1 17.9 20 22.1 23.7 25 26 26.9 26 24.4 21.8 18.7 15.7
Brown Green Bay UW ppb 17.9 15.3 13.3 11.5 10.1 8.8 8.5 9.4 10.7 12.9 15.3 18 20.5 23.3 25.7 27.3 28.6 29.6 29.6 28.4 26.3 23.9 21 17.9
Columbia Columbus ppb 25.9 24.1 22.5 20.9 19 16.4 14.7 14.3 13.7 38.4 36.5 34.5 32.5 30.3
Dane Madison East ppb 20 17.5 14.7 12.1 10.4 8.8 9 11 11.6 12.7 15.2 19.4 24.7 31 36.4 40.7 45.1 48.3 49.8 49.3 46.2 41.9 37.6 33.6
Dodge Horicon Wildlife Area ppb 22.6 20.6 18.6 16.4 14.5 13.3 12.7 13.2 14.4 16.2 18.3 21.1 24.1 27.2 29.9 31.6 33.1 34.3 34.8 34.4 33.5 32.2 31 29.9
Door Newport Park ppb 15 12.8 11.3 11 10.7 11 10.7 11.7 13.5 15.6 17.6 19.6 22 23.7 25.6 26.7 27.3 27.6 27.4 26.4 24.8 22.7 20.8 19.8
Eau Claire Eau Claire DOT Sign Shop ppb 10.3 6.9 3.8 1.9 0.9 0.6 0.8 1.9 3.8 6.5 10 13.8 17.6 21.8 26 29.5 32.1 33.9 34.4 33.1 30.5 26.3 22 17.5
Fond du Lac Fond Du Lac ppb 21.4 19.3 16.9 14.8 13.6 12.6 12.6 13.1 14.4 16.5 19 21.6 24.4 27.4 29.9 32.2 33.7 34 33.7 33.1 31.8 30.1 27.8 25.4
Forest Potawatomi ppb 19.7 18.9 18.3 17.4 16.4 15.1 14.8 15.1 14.7 14.5 28.1 27.9 27.5 27 26.3
Jefferson Jefferson-Laatsch ppb 22.3 19.2 16.1 13.4 11.2 9.1 7.3 7.4 8.8 11.5 14.7 18.4 22.7 27.1 31.2 33.9 35.7 37.1 37.7 37.7 36.8 35 32.7 29.8
Kenosha Chiwaukee Prairie ppb 25.8 23.8 21.5 19.2 17.1 15.3 14.6 15.5 17.2 18.6 20 21.9 23.8 25.3 26 26.7 27.5 28 29.2 29.6 28.9 27.1 24.6 22.1
Kenosha Kenosha-Water Tower ppb 22.8 19.9 16.4 13.6 10.9 8.6 7.1 8.9 10.5 12.6 15.3 18.2 20.9 23.5 25.5 26.4 27.1 27.6 28.5 28.6 28.3 27.7 26.6 24.3
Kewaunee Kewaunee ppb 17.3 15.2 13.3 11.4 10.7 10.2 11.2 12.5 14.2 15.8 17.3 19.2 21.2 23.6 24.7 25.5 26.2 26.8 26.8 25.9 24.6 23.4 21.8 19.6
La Crosse La Crosse DOT ppb 24 21.2 18.3 16.2 14.3 12.6 10.9 10.3 10.5 11.6 14.2 17 20.4 24.3 28.5 31.8 34.9 36.8 37.3 36.9 35.9 34.4 32 29.2
Manitowoc Manitowoc ppb 7.9 5.6 3 1.8 1.1 0.6 1.2 2.9 3.5 4.1 8.6 12.5 16.1 19.9 23 24.4 24.6 24.8 24.2 22.8 20.8 18.5 16 13.4
Marathon Lake Dubay ppb 18.6 17.3 16.2 15.2 13.9 12.8 11.8 11.3 11.7 13.1 15.1 17.7 20.7 23.5 26.5 29.5 32.4 34.1 34.9 35 35.7 35.6 35.4 34.6
Milwaukee Bayside ppb 18.1 15.1 12.5 10.1 7.3 5.6 6.9 9 11.6 14.2 16.6 19.3 22.4 25 25.5 25.9 26.4 26.7 26.8 26 24.3 22.2 19.8 16.9
Milwaukee Milwaukee-16th St. Health Center ppb 20.6 17.9 15.7 13.9 12.5 11 10.6 11.7 13.8 16.2 18.1 20 21.8 23.6 24.4 25 25.8 26.3 26.7 26.4 25.5 23.6 22.5 19.9
Outagamie Appleton ppb 16.9 14.6 12.2 11.1 9.9 8.6 7.7 7.9 9.7 11.7 14.3 17.3 21.1 25.6 30.3 34.4 37.9 41.4 43.1 43 41.2 38.2 33.9 29.4
Ozaukee Grafton ppb 17.8 15.4 12.6 9.9 7.5 6.2 7.5 9.4 11.5 13.9 16.4 18.2 21.4 24.4 26 26.9 27.6 27.7 27.6 26 23.3 20.6 18.1 15.4
Ozaukee Harrington Beach Park ppb 16.6 14.8 12.9 11.8 10.9 10 10.8 12.8 14.4 15.8 17.4 18.7 20.3 21.9 22.8 23.4 23.7 23.7 23.5 23 21.8 20.6 19.5 18.2
Racine Racine-Payne & Dolan ppb 24.1 22 19.7 17.5 16.2 15.1 15 15.7 16.5 18.1 20.6 22.8 24.1 25.3 26 26.9 27.4 28.1 28 28.2 28.2 28.3 27.8 26.4
Rock Beloit-Converse ppb 27.6 24.6 21.1 18.4 16.2 13.9 12.1 11.5 12.1 13.7 16.7 20.7 25.5 30.4 35 38.5 41 42.4 42.9 41.5 39.8 37.5 34.8 31.5
Sauk Devils Lake ppb 16.9 14.2 11.9 10.7 9.6 8.8 8.3 8.2 9.5 11.5 13.9 16.8 19.9 22.9 26 28.7 30.7 32.9 33.4 32.6 31.8 31.3 30.3 29.4
Sheboygan Sheboygan-Haven ppb 15.5 12.9 10.6 8.8 7.4 6.7 7 8.2 10.2 12.5 15.1 17.5 19.9 22.4 24 25.1 25.8 26.2 25.8 24.7 23.2 21.3 19.2 17
Sheboygan Sheboygan-Kohler Andrae ppb 15.4 13.1 11 8.7 6.3 5.5 6.9 9.4 11.8 13.9 15.9 18.5 21.4 24.2 25.5 25.8 25.9 25.9 25.7 25 23.5 20.8 18.3 16.4
Vilas Trout Lake ppb 14 11.2 8.3 6 4.6 3.4 2.1 2.7 4.8 7.2 10.3 13.5 16.8 20.4 24.3 27.1 28.6 29.9 30.6 30.3 29 26.9 24.5 21.4
Walworth Elkhorn ppb 24.9 22.8 20.4 19.1 17.5 16.4 16.3 16.4 16.7 17.5 19.2 21.1 24.7 28.9 32 34.8 37.8 39.3 39.7 38.9 37.1 34.9 32.5 30
Waukesha Waukesha-Cleveland Ave. ppb 18.9 15.9 12.8 9.7 7 5.2 4.1 4.9 6.9 9.6 12.9 16.9 21.3 25.6 29.3 31.9 33 33.6 33.6 32.8 31.1 28.7 26.2 23.1