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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 26.5 21.3 16.2 11.9 8.7 5.5 4.6 4.3 5.4 7.9 11.3 14.6 18.1 22 25.7 29.9 33 35.3 36.4 37.7 38.2 38 35.9 32.7
Brown Green Bay UW ppb 44 43.4 42.9 42 40.5 38.2 36.5 35.8 35.4 35.2 34 33.7 34.8 38 41 43.7 45.8 47.4 49.3 50.5 51 50 48.3 46.3
Columbia Columbus ppb 31.3 31.3 31.7 32.2 32.6 32.7 32.2 31.9 32.5 33.6 35.2 37.9 41 44.8 48.6 52 54.2 55.7 56.2 55.5 54.2 52.8 51 49.3
Dane Madison East ppb 26.2 21.4 17.4 15.1 12.5 10 8.7 10.1 13.5 17.9 22.9 28.3 34.7 41.6 47.4 51.3 53.2 54.3 55.1 54.6 52.3 47.9 43.4 38.9
Dodge Horicon Wildlife Area ppb 42.2 42.9 42.7 41.5 40.2 38.5 36.6 35.3 34.8 35.1 36.9 39.2 41.9 45.1 48.9 52.2 54.8 56.7 58 58 57 55.6 53.8 51.6
Door Newport Park ppb 47.8 47.7 47.5 47.9 47.5 46.7 45.7 44.7 43.6 42.9 42.5 42.1 42.2 42.8 44.2 45.7 47.2 49.2 51 52.8 54.5 56 56.1 55.2
Eau Claire Eau Claire DOT Sign Shop ppb 22.3 16.3 11.5 8.7 6.5 5.6 6.7 9 13 18.3 23.2 28.1 34.7 41.3 47 51.6 54.3 54.9 54.6 53.6 51.9 48.3 45.2 42
Fond du Lac Fond Du Lac ppb 42.7 43.5 43.6 42.5 42 39.7 37.7 35.9 35.8 36.2 37 38.4 40.4 43.8 47 50.2 52.3 53.8 54.5 54.3 53 50.9 48.6 46.5
Forest Potawatomi ppb 44.4 44.5 44.4 44.5 44.8 45.1 45.2 45.3 45.1 44.9 45.9 47.3 48.8 50.4 51.4 52.4 54.4 56.3 57.4 58.3 58.9 58.7 57.2 55
Jefferson Jefferson-Laatsch ppb 31.7 30.9 29.8 28.6 26 22.8 20.5 19.6 20.7 22.4 25.1 28.5 33.6 39.4 45.1 49.6 51.8 53.3 52.9 50.9 47.3 42.5 36.6 30.8
Kenosha Chiwaukee Prairie ppb 43.1 39.1 34.7 30.1 27.4 26.4 27.3 27.5 28.2 30.8 35.2 41 42.9 46.5 48.6 50.3 51.9 52.5 51.5 50.1 48.4 45.6 43.5 40.6
Kenosha Kenosha-Water Tower ppb 43.6 40.9 39.2 37.6 36.6 39.4 42.1 46.5 49.7 52.7 53.5 51.6 48.7 44.3 40 37.7 36.1
Kewaunee Kewaunee ppb 52 50.9 48.8 46.8 45.5 44.6 44 43.6 43 42.8 43.3 43.8 44 44.1 44.5 45.2 46.5 47.9 49.1 51.2 52.8 53.3 53 52.3
La Crosse La Crosse DOT ppb 34.3 29.5 24.4 21.1 19.5 16.9 15.5 15.3 16.6 20.7 25.7 30.8 36.4 41.9 47.2 52.3 56.2 57.5 58.1 57.4 55.2 52.6 49.4 45.6
Manitowoc Manitowoc ppb 31.6 27.9 24.8 23.1 20.7 18.1 16.6 18.4 21 23.8 26.8 29.3 32.8 36.9 40.9 42.5 43.8 44.8 46.8 48.7 50.2 50.5 49.4 47
Marathon Lake Dubay ppb 40.5 38.7 36.9 35.4 33.6 32.1 30.9 29.9 29.5 29.7 30.6 32.8 36.5 40.5 44.5 48.6 52.7 56.3 59 60.1 60.3 59.6 58.2 56.3
Milwaukee Bayside ppb 46.7 41.4 35.4 29.1 23.3 17.2 12.1 9.3 8.4 10.2 11.4 15.7 18.7 23.8 29.1 35.3 41 44 48.2 48.9 48.8 46 44.5 42.2
Milwaukee Milwaukee-16th St. Health Center ppb 33.4 29.9 26.4 22.2 17.8 14 10.3 7.5 6.6 5.9 7.1 10.7 13.6 17.2 22.8 28.2 32 34.9 34.6 30.9 28.7 25.4 20.8 17.6
Milwaukee Milwaukee-UWM UPark ppb 46.9 43.1 38 32.4 26.4 20.6 15.1 11.1 8.5 8.6 9.8 13.8 18.2 23.5 29.6 36.6 42.6 45.6 48.6 48.1 46 42.8 40.5 38.3
Outagamie Appleton ppb 41.5 40.1 38.8 37.3 36.2 35.1 33.2 31.7 30.3 29.3 28.6 28.9 29.9 32.4 35.9 40.2 44.6 48.3 51.7 53.4 53.9 53 51.2 49.3
Ozaukee Grafton ppb 42.3 38.7 34.3 30.1 25.6 20.9 17.7 16.1 15.5 14.9 15.7 18.7 22.5 28.4 33.3 38.1 42.6 47.1 50.3 50.1 49.1 46.1 43.3 39.7
Ozaukee Harrington Beach Park ppb 43.4 41.2 39.7 37.4 33.9 31.6 29.7 29.7 30.3 30.9 31.4 32.3 34.1 36.3 39.2 41 44 46.9 48.7 50.3 51 50.5 49.2 48.3
Racine Racine-Payne & Dolan ppb 47.5 44.5 42.6 39.4 35.4 32.2 29 26.3 25.6 25.4 25 26.8 29.8 34.2 39.2 43.5 46.2 47.7 48.6 48.3 47.6 45.8 44.7 44.5
Rock Beloit-Converse ppb 14.5 8.7 4.1 2.5 3.5 5.1 8.3 12.6 17.6 23.2 29.4 35.8 41.3 46.6 50 52.4 54.6 56.1 55.8 51.8 46 41.4 36.2 30.9
Sauk Devils Lake ppb 30.4 26.9 24.2 23.7 22.7 21.6 21.3 22.6 25 28.1 31.4 34.8 39.3 43.9 48.6 52.1 54.5 55.9 56.2 55.3 52.6 49.3 45.9 42.3
Sheboygan Sheboygan-Haven ppb 40.2 39.1 38.5 36.3 33.5 31.9 30.8 30.6 30.5 30.6 30.4 31.4 34.1 36.4 39.4 42.3 44.2 47.1 50.7 52.8 52.7 51.3 49.7 47.8
Sheboygan Sheboygan-Kohler Andrae ppb 45 42.7 41.4 37.7 33.8 31.1 28.8 28.1 28.7 29.4 30 32 34.5 36.5 38.4 39.9 42 44.6 47.4 50 51.5 52.4 51.8 51.3
Vilas Trout Lake ppb 39.2 38.5 37.9 37.5 36.9 36.1 35.6 34.8 34 34.1 34.8 36.5 38.8 42 45.4 49 52.6 55.5 57.2 57.7 57 55.1 52.4 49.4
Walworth Elkhorn ppb 39.1 39.3 39.8 39.3 38.1 37.1 35.6 34.3 34.9 36.2 36.4 38.4 40.9 43.8 47.4 51.6 54.1 55 56.1 56.4 56.6 56.8 56.3 55.2
Waukesha Waukesha-Cleveland Ave. ppb 42.2 39.2 36.1 32 27.1 22.2 18.1 15.1 13.3 13.4 16 20.4 26 32.6 38.7 44.9 49.9 53.8 55.4 55 53.9 50.3 44.4 38.9