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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 7/23/2025 13:45 to 7/23/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

8-HR Ozone Summary

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Monday, 
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 6.8 4.2 2.6 2.2 2.7 3.1 3.4 3.9 4.7 6.5 8.3 10.3 12.2 13.2 15 17.8 19.6 19.5 18.1 15.6 12.2 10.5 9.3 8.6
Brown Green Bay UW ppb 22.2 20.8 19.5 16.7 15.5 14.6 14.4 13.1 12.4 13.4 15.1 17.4 19.2 20.9 23.6 24.9 26.2 26.5 26.5 26.3 25.5 23.7 21.5 19.1
Columbia Columbus ppb 21.7 20.2 18.5 17 15.6 15.2 14.5 14 14 14.4 15.6 17.6 20.5 23.5 26.7 30.2 32.8 34.3 34.9 35.4 34.7 33.5 31.2 28.6
Dane Madison East ppb 7.9 4.9 3.5 2.9 3.5 4.6 5 5.3 6.1 7.6 9.1 12.3 13 17.1 23 29.1 34 37.2 38.2 36.5 35.4 34 31.6 28.8
Dodge Horicon Wildlife Area ppb 17.5 16 14.6 13.1 12.5 12.4 13.1 13.8 14.8 16.1 18 21.2 24.8 27.9 30.5 33.3 35.5 37.2 38.2 37.7 36.5 34.9 33 30.9
Door Newport Park ppb 27.1 25.6 23.5 22 21.3 21.2 20.9 20.4 19.7 19.3 19.3 19.1 19.4 19.9 20.5 20.6 21.2 21.8 22.4 22.8 23.3 23.8 24.5 25.3
Eau Claire Eau Claire DOT Sign Shop ppb 8.8 4.6 2.4 2.1 2.1 2.4 2.7 3 5.6 9.5 13.7 17.5 21.8 26.8 31.7 32.5 34.3 34.2 33 30.8 27.9 24.7 21.9 19.8
Fond du Lac Fond Du Lac ppb 19 18.4 17.5 16.1 16.8 17.1 17.9 18.6 19.1 19.3 20.6 23.1 25.4 27.6 29.7 31.5 33.1 34 34.1 33.5 32.5 31.4 30.3 29.2
Forest Potawatomi ppb 12.2 11 10.5 11.3 11.7 11.7 11.6 11.8 13.2 15.4 18.2 20.4 22.6 25.7 29 31.6 33 33.2 32 30.5 28.9 27.1 25.4 24
Jefferson Jefferson-Laatsch ppb 9.9 8.1 6.9 6.4 6.9 8.2 9.7 11 11.8 12.8 14.1 16.5 17.8 21.6 25.4 29.7 33.8 37.7 40.1 41 39.6 37.8 35.4 32.3
Kenosha Chiwaukee Prairie ppb 23.4 19.4 16.3 15.5 15.5 16.3 16.9 17.4 18.9 21.2 23 24.7 27 29.4 31.7 33.8 35.2 36.1 37 37.9 38.3 38.6 38.9 39.1
Kenosha Kenosha-Water Tower ppb 24.9 21.9 18.9 16.4 14.7 14.5 15.8 16.9 16.6 18.6 20.9 23.6 25.5 29.8 32.6 35.4 35.7 36 36.2 36.1 35.7 35 34.6 34.4
Kewaunee Kewaunee ppb 32.7 29.5 27.3 24 21.9 20.2 19.5 18.3 18.6 20.7 22.2 23.4 24.4 25.6 26.2 26.4 26.9 27 27.1 27.1 27.1 27.1 27.1 26.9
La Crosse La Crosse DOT ppb 15.8 11.9 9.1 7.3 5.7 5.3 5.4 5.9 6.4 6.8 8 10.6 14 17.8 21.4 24.8 28 30.5 32.5 32.7 31.7 29.9 27.4 25.1
Manitowoc Manitowoc ppb 29.8 26.4 23.4 20.7 18.3 16.6 16.5 17 18.4 19.6 20.6 21.6 22.7 23.4 24 24.3 24.7 25.1 25.3 25.2 24.4 23.8 22.8 21.5
Marathon Lake Dubay ppb 14.9 13.7 12.5 11.4 10.8 10.6 10.5 10.6 10.8 11.4 14 17.9 22.7 28.2 34 35.2 34.8 35.8 35.9 34.8 32.6 29.4 26.3 23.4
Milwaukee Bayside ppb 14.6 10.6 8.1 7.2 7.1 7.8 9.5 11.6 14.5 17.3 20.5 23.4 25.9 28.6 31 32.9 34.3 35.1 35 34.1 32.2 31.2 30.2 29.3
Milwaukee Milwaukee-16th St. Health Center ppb 23.5 20.5 17.9 15.6 13.9 12.3 11.6 12 13.9 16 18.3 21.1 23.7 26.8 29.7 31.7 32.5 32.1 31.1 29.4 27.6 26.6 26.1 26
Outagamie Appleton ppb 14.4 12.3 10.7 9.6 9 9 8.6 8.9 9.4 10 11 12.9 15.4 18.8 21.9 26.1 29.8 32.5 33.7 33.8 33.4 31.8 28.9 25.7
Ozaukee Grafton ppb 19.3 16.2 13.2 11.3 11.2 11.8 13.1 14.4 15.3 16.7 19.1 20.5 23.3 25.8 28.7 31.3 33.8 34.7 34.5 33.1 30.3 27.5 25.8 24.3
Ozaukee Harrington Beach Park ppb 26.3 22.4 19.1 16.2 14.4 13.9 14.2 15.3 16.1 16.9 17.9 19.6 21.8 24.3 26.2 28 29.6 30.5 30.5 29.4 27.6 25 23.5 22.1
Racine Racine-Payne & Dolan ppb 32.4 29.5 26.1 22.7 20.8 20 19.2 19.9 20.1 19.8 21.7 24.1 26.3 28.8 31.2 32.8 33.8 35.6 36.1 36.2 36.2 36.2 36.1 36.1
Rock Beloit-Converse ppb 16.5 14.2 12.5 11.8 11.4 12.4 13.8 14.9 16.2 17.7 20 22.6 23.6 27 30.5 33.6 36.9 39.5 40.3 40.3 39 36.7 33.4 29.3
Sauk Devils Lake ppb 4.8 2.6 1.8 1.8 2 2.2 2.5 3.2 5.4 6.3 9.4 13.5 18.1 23.1 28.4 32.8 35.1 38.3 37.9 35.7 33.3 31.4 29.1 26.7
Sheboygan Sheboygan-Haven ppb 23.7 21 18.9 17.3 15.7 14.8 14.4 14.9 15.7 16.8 17.4 17.6 19.4 21.4 22.2 23.6 24.6 24.8 24.3 22.8 20.5 17.7 14.8 12.8
Sheboygan Sheboygan-Kohler Andrae ppb 31.9 27.3 23.3 19.6 16.1 14.1 14.3 15.4 17.1 19.3 21 22.8 24.6 26.4 27.4 29.6 30.8 31.5 32 31.2 29.4 27.3 25.8 24.5
Vilas Trout Lake ppb 7.3 6.8 7.2 7.9 8.3 8.6 8.1 7.6 8 9.4 11.2 13.6 16.7 19.9 23.2 25.6 26.8 26.5 25.6 25.3 24.7 23.9 22.9 22.1
Walworth Elkhorn ppb 15.7 13.9 13.9 14.5 15.3 16 17.1 18.4 19.6 21.1 22.4 24 26.5 29.7 33 35.8 38 39.1 39.1 37.5 35 31.8 27.7 23.8
Waukesha Waukesha-Cleveland Ave. ppb 17.5 16.1 15.1 14 13 12.9 13.8 15.1 16.5 17.1 17.7 19.5 21.8 25.1 28.6 32 34.3 35.4 35.4 33.9 31 26.7 22 17.9