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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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Sunday, 
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 17.5 14.2 11.1 9 7.8 7.6 8.6 9.8 11 12.7 15.2 18.1 21.2 23.7 25.1 25.7 26.1 25.5 25.3 25.7 26.2 27.7 29.1 30.8
Brown Green Bay UW ppb 32.9 30.1 27.8 26.3 24.7 23.3 22.5 22.6 24.4 27.1 30 34.1 38.4 43.2 47.7 49.8 50 50.3 49.8 47.9 45.5 42.6 39.8 38.5
Columbia Columbus ppb 39.2 37 35.3 33.1 31.6 29.4 27.5 27.3 28.6 30 31.9 35.2 38.8 42.7 46.6 49.3 51 52.5 53 52.5 51.1 49.5 47.8 46.4
Dane Madison East ppb 45.2 43.1 40.8 38.3 35.8 34.2 32.6 32.1 32.4 33.5 35.7 38.4 41.3 43.9 46.3 48.1 50.2 51.5 51.6 51.1 50.4 49.3 48 46.5
Dodge Horicon Wildlife Area ppb 44.6 41.7 39 36.4 33.6 30.8 28.5 27.4 27.2 28.6 30.4 32.9 36.7 41.3 45.4 48.6 50.7 52.1 53.2 53.8 53.4 52.1 50.6 48.7
Door Newport Park ppb 24.7 21.9 19.4 17.5 17.2 16.6 16.5 16.8 19 21.3 23.5 26.1 28.6 31.5 34.7 37.3 39.4 41.3 43.6 46.3 47.7 48 48.3 49.4
Eau Claire Eau Claire DOT Sign Shop ppb 21.1 15 9.1 5.1 2.8 2.1 2.9 4.6 7.8 11.7 15.5 18.8 22.3 25.7 27.9 29.1 29.7 30.4 31.2 33.6 35.9 38.2 40.7 42.7
Fond du Lac Fond Du Lac ppb 39.3 36.9 34.6 32.5 30 27.4 25.4 25 26 28 30 32.6 35.6 39.3 43.4 45.9 47.3 48.2 48.6 48.9 48.9 48.4 47.1 45.6
Forest Potawatomi ppb 29.6 28.1 26.9 26.1 24.7 23.4 22.2 22.1 22.9 23.6 24.3 25.6 27.9 30.6 32.7 33.3 34.5 35.2 35 34.3 33.6 32.9 35 37.3
Jefferson Jefferson-Laatsch ppb 46.4 44.1 41.1 37.4 33.8 31.4 29.4 28.3 28.6 29.5 31.9 35.4 39.3 42.9 46.2 49.1 51.5 52.7 53.1 53 52.4 51 49.5 47.4
Kenosha Chiwaukee Prairie ppb 51 48.8 46.6 44.6 42.6 40.9 39.6 39.1 39.5 40.6 42.5 45 48.2 51.5 54.4 56.2 57.1 57.4 57.2 55.8 53.4 51.2 48.8 46.6
Kenosha Kenosha-Water Tower ppb 51.5 49.1 46.5 43.7 41.7 39.8 38.5 38.1 38.5 39.5 41.2 44 47.5 51.4 54.9 57.6 59.1 59.5 59.1 57.7 55.2 52.2 49.1 45.9
Kewaunee Kewaunee ppb 30 27.5 25.9 24.7 24.1 23.3 23.3 24 25.6 27.9 30.5 33.5 37 40.4 43.8 46.9 49.5 50.6 50.7 50.8 51.9 52.3 52.1 50.6
La Crosse La Crosse DOT ppb 29.7 25.9 22.4 18.8 16 13.7 12.5 12 12.5 15.2 17.8 22.1 26.9 31.5 35.4 38.9 41.7 42.8 44.2 44.7 45.4 46.1 46.5 47.3
Manitowoc Manitowoc ppb 25.8 22.3 19.9 18.6 17.5 16.7 16.7 18.1 19.8 22.1 24.6 27.6 31.4 35.7 40.1 43.6 46.5 47.3 48.3 49.3 50.2 50.9 50.4 49.5
Marathon Lake Dubay ppb 37.7 35.3 33.6 31.9 28.8 26.1 24 23.1 23 26.6 29.9 33.3 36.9 39.6 41 41 39.5 36.6 33.8 32 32.4 34.3 35.7 37.2
Milwaukee Bayside ppb 43.1 40.1 37.8 36.6 34.9 33 31.3 30.1 30.9 32.7 35.2 37.9 40.8 43.7 46.8 49.8 52.5 54.5 54.8 54.4 53.2 52.1 50.3 48
Milwaukee Milwaukee-16th St. Health Center ppb 51.1 48.7 46.7 44.2 41.6 38.9 36.8 35.9 36 37 38.6 41 44.2 47.8 51.2 54.2 56.9 58.3 58.6 57.7 55.8 53.6 51 47.9
Outagamie Appleton ppb 28 25.4 22.9 20.1 18.1 16.7 16.4 17.9 20.1 23.5 27.7 32.5 37.9 43.1 46.8 48.7 50.4 50.4 50.3 49.7 48.7 48.1 47.9 47.8
Ozaukee Grafton ppb 45.8 43.8 40.9 38.2 35.5 32.8 30.7 29.7 29.7 30 32.1 34.9 39.1 43.9 47.8 51.2 54.2 56.7 58.3 58.4 56.9 54.8 53 50.9
Ozaukee Harrington Beach Park ppb 42.6 40 36.8 34.1 31.7 29.1 27.4 26.7 26.4 27.4 29.7 32.4 35.9 40.7 44.7 48.2 50.5 52.1 53.1 53.1 52.2 50.3 48.1 45.2
Racine Racine-Payne & Dolan ppb 53.2 50.5 47.5 44.6 41.6 39.1 37.4 36.5 36.7 37.8 39.6 42.1 45.5 49.5 53.4 56.5 58.6 59.4 59.6 59 57.3 54.8 52.1 49.2
Rock Beloit-Converse ppb 48.9 45.7 42.5 39.5 37.1 35.2 34 34.1 35 36.3 38.2 40.7 44 48 51.6 53.8 55.1 55.9 55.9 54.8 53 50.5 47.9 45.6
Sauk Devils Lake ppb 40 36 31.3 28.1 24.8 21.4 17.1 16.4 18.2 20.7 24.7 28.4 32.3 35.9 40.3 42 43 44.2 44.6 44.6 44.2 43.6 43 41.6
Sheboygan Sheboygan-Haven ppb 34.9 32.5 30.2 27.6 25.8 23.6 22.6 22.8 24.4 26.2 28.4 31 33.6 36.9 40.6 43.4 45.2 46 46.7 46.8 46.9 46.2 44.2 42.2
Sheboygan Sheboygan-Kohler Andrae ppb 35.6 31.9 28.5 26.1 23.8 22.1 21.7 21.5 22.3 24 26 28.8 33 38.3 43.5 48.2 52.8 56.7 59.5 61.2 61.9 60.5 58.6 56.2
Vilas Trout Lake ppb 22.2 19.4 17 14.1 11.8 10 9 9.5 10.6 12.7 14.7 18 21.8 26.1 29.9 31 31.6 31.5 31.9 32.1 31.9 31.4 30.5
Walworth Elkhorn ppb 48.9 45 41.4 38.7 36.5 35 34.3 34.4 35.5 37.3 39.6 41.9 44.5 47.7 50.5 52.6 53.6 53.9 53.4 52.2 50.3 47.9 45.3 42.9
Waukesha Waukesha-Cleveland Ave. ppb 48.5 46.3 43.5 41.1 38.7 35.7 33.3 32.2 32.2 33.4 35.5 37.6 40.6 44.3 47.8 50.8 53.1 54.4 55 55.1 53.7 51.8 49.5 46.5