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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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Friday, 
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 24.4 22.3 22.5 24.1 25.8 26.2 26.6 27.4 29.1 31.3 32.6 33.7 35 36.2 37.2 38.5 39.3 39.5 38.4 36.5 34.4 33.1 31.5 29
Brown Green Bay UW ppb 27.2 24.5 23.7 22.7 21.6 20 19.5 20 21.9 24.9 27.8 32.5 37.5 42.9 47.6 52 54.5 55.7 54.8 52 48.4 44.3 40 36.4
Columbia Columbus ppb 38.7 37.7 36.9 35.6 34 32.4 30.1 29 30 32.3 34.7 37.7 40.7 43 47 50 50.6 50.3 49.1 48.2 48.1 48.1 47.1 46
Dane Madison East ppb 28.5 25.6 23.3 20.3 17.4 14.8 14.2 15.2 17 20.2 24.4 30.9 39.1 47.6 55.5 61.1 63.7 64.4 63.6 61.9 59.3 56 51 45
Dodge Horicon Wildlife Area ppb 36.4 33 30.9 29.7 28.2 26.4 24.5 24.8 26.4 29.9 33.3 36.3 39.9 43.5 47.4 50.2 51.9 51.6 51.1 50.3 49.1 47.9 46.8 45.1
Door Newport Park ppb 34.2 33.7 34 33.9 32.7 31.2 30.3 30.4 30.4 31.3 32.4 34.1 37.2 41.1 44.8 47.8 50.2 51.5 51.5 50.1 48.3 46 42.9 38.6
Eau Claire Eau Claire DOT Sign Shop ppb 14.8 9.4 5.1 2.4 1.1 1.7 2.9 5.8 10.2 15.2 20.5 25.8 30.9 35.6 39.7 41.8 42.2 41.6 40.2 38.1 34.6 29.9 25.4 20.7
Fond du Lac Fond Du Lac ppb 35.1 32.9 30.6 29.5 27.7 25.5 23.6 23.1 24.5 26.8 30.3 34.2 38.4 42.8 46.9 50.7 52.7 53.3 52.8 51.4 50.1 48.7 46.6 43.7
Forest Potawatomi ppb 29.6 28.9 28.7 28.4 28.6 28.9 29 29.7 30.2 31.5 33.6 35.6 37.4 39.1 40.9 42.4 43.2 42.5 42.1 41.4 40 38.2 36 34.4
Jefferson Jefferson-Laatsch ppb 27.2 22.5 18.5 15 11.7 8.8 8.9 10.4 13.2 17.7 23.4 29.8 36.2 42.7 47.2 51 54 55.5 54.8 52.2 48.7 44.4 39.4 34.9
Kenosha Chiwaukee Prairie ppb 20.5 16.4 12.6 9.3 7.6 7.3 8.9 12.6 17.2 22.2 27 32.6 37.2 41.9 45.6 47.8 49.6 51.1 51.6 48.8 45.7 41.8 37.4 32.7
Kenosha Kenosha-Water Tower ppb 23 18.6 14.7 10.9 7.3 4.9 4 5.4 10.1 16 21.6 28 34.1 40.4 46 50.8 53.1 54.2 55 54.4 53.3 49.6 45 39.8
Kewaunee Kewaunee ppb 26.1 24.7 23.2 22.1 20.5 19.4 19.1 20.2 20.5 22.6 26.3 30.3 35.6 41.1 45.3 47.5 49.7 50.2 49.5 49.4 48.4 47.3 45.9 44.6
La Crosse La Crosse DOT ppb 30 26 21.8 19 16.1 13.8 12.5 12.3 14.5 17.3 21 25.4 30.3 35 39.3 43.3 46 47.7 48 46.4 44.9 43 39.7 35.9
Manitowoc Manitowoc ppb 12.8 9.2 6.4 5.1 4.2 3.4 3.1 4.8 8.5 13.2 17.9 23.6 30 36.5 42.5 46.9 49.8 51.5 52.6 52.7 50.8 46.6 42.8 39.1
Marathon Lake Dubay ppb 33.3 31.1 31 30.3 28.3 25.1 23.6 24.3 25.3 26.8 28.5 30.3 32.7 36 39.1 40.7 41.8 42 40.8 39.6 38.6 37.2 35.1 33.4
Milwaukee Bayside ppb 15 11.2 7.3 4.5 2.7 1.9 2.6 5.2 9.7 14.8 20.9 28 35.4 42.3 47.4 50.3 51.4 51.7 51.5 48.9 44.8 39.7 34.3 29.1
Milwaukee Milwaukee-16th St. Health Center ppb 16.8 12.7 9.1 5.2 2.3 1.7 2.6 5 9.1 13.1 18.3 24.7 31.2 37.7 43.1 47.6 50.8 53.6 54 52.3 49 44.1 40.6 37.3
Outagamie Appleton ppb 33.8 30.5 27.7 26.3 24.8 22.4 22 22.5 24.5 26.2 28.4 31.3 35.9 41.7 46.3 49.1 51 52.5 52.8 51.6 48.7 45.5 43 40.7
Ozaukee Grafton ppb 19.9 16.3 12.3 8.2 7.7 6.9 6.8 8.8 12.7 17.6 23.2 29.4 35.6 42.3 48.5 52 53.6 53.6 53.1 52 48.6 43.1 37.6 33.5
Ozaukee Harrington Beach Park ppb 25.3 23.1 21.9 20 18.2 18.1 18 19.4 21.4 23.8 26.4 30 35.4 40.3 45.5 49.6 51.6 52.8 52.4 51.1 49 45.5 41.4 38.2
Racine Racine-Payne & Dolan ppb 23 19.9 16.6 14.2 12.6 11.7 11.6 14.2 19 23.4 28.3 33.3 38.2 42.7 47.2 49.5 50.4 51.8 52.3 51.2 48.6 45.6 41.9 38.9
Rock Beloit-Converse ppb 26 20.5 15.2 12.8 11.1 10 9.9 12.4 16.7 22 27.8 33.9 40.2 46.5 52 55.5 57.6 58.5 58.6 55.4 51.4 47 41.1 34.6
Sauk Devils Lake ppb 27.5 24.4 22.9 22.2 22 22.2 22.7 23.3 25.8 28.5 31 33.9 37.1 40.1 43.3 46.1 46.7 47.2 47 45.4 44 41.9 39.3 35.8
Sheboygan Sheboygan-Haven ppb 19.7 16.2 13.6 12.3 11.5 10.5 11.1 13.6 16.8 21.3 26 31.5 36.8 42.1 45.8 47.3 48.7 49.7 49.4 47.7 45.6 43.4 41.1 39
Sheboygan Sheboygan-Kohler Andrae ppb 18.2 14.8 11.8 10.3 9.1 8.7 9.5 10.3 12.1 14.9 19 23.3 28.6 34.1 39.6 44.9 49.2 52.3 53.4 52 49 45 40.5 35.7
Vilas Trout Lake ppb 18.7 16.2 15.4 15 14.9 15.2 16.7 19.2 22.3 26.2 29.7 33.2 36.3 39.4 42.2 43.7 44.4 43.8 42.7 41 38.9 35.7 31.2 26.7
Walworth Elkhorn ppb 36.3 31.5 28.9 27.2 25.9 24.6 23.7 25.4 27.9 31.9 34.9 38.1 41.4 46 50.7 53.3 55.4 57 56.6 56 55.5 54.6 53.4 51.2
Waukesha Waukesha-Cleveland Ave. ppb 21.1 16.3 12.3 8.5 5.6 3.5 3 4.8 8.1 12.5 17.8 24.3 31.5 39.8 48.4 54.6 59 61 61 60 57 52.5 47.7 43