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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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Thursday, 
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 12.9 9.8 6.8 5.6 5.4 6 7.9 10.2 12.7 15.8 18.7 22.3 26.8 30.9 33.6 35.7 37.6 38.4 38 35.6 32 30.1 28.6 26.8
Brown Green Bay UW ppb 14.5 11.3 8.6 7.3 6.5 5.3 4.6 5.2 7.6 10.6 14.3 17.8 21.1 25.7 30.5 34.5 36.5 37 37 36.3 35.9 34.7 32.7 30
Columbia Columbus ppb 28.1 26.2 24.9 23.3 22.9 23.3 21.8 21.5 22.6 24.1 25.8 27.5 29.5 31.5 34.7 38 39.5 39.9 39.7 40 40.1 40.8 40.3 39.6
Dane Madison East ppb 29.3 25.5 22.1 19.1 16.5 14.2 12.4 12 12.7 15.7 19.4 24.2 29.9 36.1 41.7 45.3 48.3 49.3 49 47.4 44.7 41.1 35.8 31.7
Dodge Horicon Wildlife Area ppb 28.3 25.6 23.6 22.1 20.6 19.2 17.8 16.4 16.8 18.6 21.3 24.6 28.4 32.6 37.3 41.7 44.7 47 47.8 47.1 45.9 44.5 42.8 39.9
Door Newport Park ppb 19.4 19.5 20 19.9 19.7 20.4 20.9 21.2 21.5 21.9 22.2 24.1 26.6 28.8 30.9 32.4 33.4 33.9 34.4 34.7 35.2 35.6 35.4 34.6
Eau Claire Eau Claire DOT Sign Shop ppb 13 8.3 4.4 1.9 0.7 0.8 1.1 2.9 6.2 10.6 15.4 20.2 25.1 29.9 34.3 37.5 39.5 40.4 40 38 34.8 30 25.1 20.1
Fond du Lac Fond Du Lac ppb 23.4 21.7 20.3 19.4 18.5 18.3 17.9 18.4 19 20.8 23.5 26.1 29.1 32.2 36 39.2 42.4 44.2 44.8 44.2 43.4 41.9 40.3 37.8
Forest Potawatomi ppb 25.9 25.8 26.5 27.2 27.6 28.1 28.6 29.7 30.7 32.1 32.9 33.8 34.9 36.4 37.8 38.4 38.5 37.8 36.8 35.8 34.7 33.1 31.9 30.2
Jefferson Jefferson-Laatsch ppb 26.3 22.5 18.3 14.8 11.6 8.8 7.2 6.9 8.7 11.4 15.5 20.5 26.3 32.2 37.2 41.4 44.2 46.1 46.6 45.2 42.7 39.8 36.1 31.9
Kenosha Chiwaukee Prairie ppb 19.8 16.9 13.2 10 7.8 7.2 7.7 9 10.8 13.8 17.2 20.9 24.2 27.4 30.1 31.8 33.2 34 34.7 35.3 33.9 31.4 28.1 24.5
Kenosha Kenosha-Water Tower ppb 21.9 18.5 14.8 11.3 8.4 6.1 4.5 4.7 6.2 9.9 14 18.2 22.4 26.3 30.2 33.1 35 35.5 35.6 35.5 35.2 33.7 31.2 27.6
Kewaunee Kewaunee ppb 17.3 14.8 13.2 12.3 12.1 11.8 12.4 14.1 16.1 18.7 20.9 23.3 25.6 27.6 29.3 30.2 31.1 31.8 32.1 31.8 31 29.5 28.2 26.8
La Crosse La Crosse DOT ppb 26.6 23.9 21.7 19.5 17.2 14.8 13.5 13.8 14.7 16.8 19.2 22.9 27.6 32.3 36.8 39.9 42.5 44 45.1 43.7 42.1 40.1 37.3 34.2
Manitowoc Manitowoc ppb 10.5 7.4 5.1 3.6 2.6 2 2.2 3.7 6.5 9.9 13.3 16.9 20.5 24.2 26.8 29.2 30.3 30.7 30.6 28.2 25.2 22 20 16.5
Marathon Lake Dubay ppb 33.3 31.4 29.7 28.2 25.4 23.5 21.9 20.7 20.5 21.9 24 26.3 29.1 32.2 35.2 38 40.3 41.3 40.3 39.8 39.8 39.8 38.4 36
Milwaukee Bayside ppb 13.9 10.9 8.2 6 4.6 3.5 3.7 5.6 8.5 11.8 15.6 19.6 23.8 28.1 31.6 33.6 34.6 34.9 34.8 33.4 31 27.4 23.4 19.3
Milwaukee Milwaukee-16th St. Health Center ppb 16.7 13.4 10.5 8 5.9 5 3.9 5.2 7.3 10.3 13.7 17.7 21.9 26 29.5 31.9 33.8 34.8 34.8 34.4 33 29.5 25.5 21.2
Outagamie Appleton ppb 23.9 18.3 14.3 11.8 10.2 8.7 8.6 9.5 11.8 14.8 17.9 21.4 25.9 31.6 37.3 42 46.2 49 51.2 51.2 49.8 47 42.8 38.8
Ozaukee Grafton ppb 12.8 10.3 7.7 6.4 6.1 5.7 5.8 7.2 9.4 12.4 16 19.9 24.2 27.1 30 33.2 35.2 36.3 36.8 37 32.3 29.2 26.9 23.5
Ozaukee Harrington Beach Park ppb 17 16.1 15.7 15.1 15.3 15.4 15.4 16.2 17.7 19.2 19.4 20.2 23.2 26.3 29.1 31.3 32.5 34 34 34.1 32.6 31 29.5 27.1
Racine Racine-Payne & Dolan ppb 24.8 22 19.1 16 12.9 9.9 8.3 8.6 10.1 12.6 13.7 18.1 23.1 27.8 31.1 33.2 34.6 35.9 36 35.9 34.7 32.7 29.9 26.5
Rock Beloit-Converse ppb 28.1 24.2 20.3 17.5 15.1 12.4 11 10.5 10.8 13.1 17.1 22.6 28.2 34.6 39.9 44.8 48.8 51.6 52.8 49.7 45.7 41 36.3 31.2
Sauk Devils Lake ppb 28 25.8 24.6 24.1 23.3 21.9 21.2 21.6 22.6 24.1 26 28.2 31.2 34.8 38.5 41.2 43.5 44.8 44.4 42.8 40.3 37.7 34.4 30.8
Sheboygan Sheboygan-Haven ppb 14.6 12.4 10.5 9 8 7.1 7.2 8.4 10.4 13.1 16.3 19.6 23.3 27.3 30.8 33.2 35.1 36 36 34.5 32.1 29.4 26.2 23
Sheboygan Sheboygan-Kohler Andrae ppb 14.6 12.9 10.8 9.1 8.3 8.7 9.3 9.1 8.8 11 14.3 18.8 23.2 27.4 32 32.8 33 34.2 34.8 34 31.9 28.9 24.8 21.4
Vilas Trout Lake ppb 17.9 14.3 10.8 8.2 6.4 5.1 3.9 5.7 8.9 13 17.4 21.6 25.9 30.2 34.2 35.3 35.4 34.5 32.6 30.6 28.5 26.1 23.6 20.9
Walworth Elkhorn ppb 26.9 24.7 23.4 22.4 21.8 21.2 20.6 20.3 21 22.7 25.1 28.3 31.5 35.3 39.3 43.4 46.9 49.3 50.1 49.6 48.5 46.2 43.3 39.8
Waukesha Waukesha-Cleveland Ave. ppb 20.2 16.5 13 9.9 7.1 4.9 3.2 3.1 4.7 7.9 11.9 16.9 23 29.8 36.9 42.4 46.2 48.5 49.2 47.8 44.7 39.8 33.3 26.8