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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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Saturday, 
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 44.1 41.6 38.8 35.7 32.2 28.9 26.8 25.4 24.7 25 25.9 27.7 30 32.4 34.6 36.3 37.5 38.1 38.4 37 34 30 25.4 21.2
Brown Green Bay UW ppb 47.9 47.4 45.2 43.2 41.4 40 39.3 39.5 39.9 40.4 41.2 42 42.9 43.8 44.7 45 45.2 45 44.5 43.2 41.8 39.7 37.2 35.3
Columbia Columbus ppb 42.2 41.3 40.4 39.9 39.2 38.2 37.2 36.8 36.9 37.4 38.2 39.2 40.8 42.6 44.4 45.9 47 47.8 47.9 47.5 46.6 45.8 44.3 42
Dane Madison East ppb 41.8 40.3 39.1 37.9 36.5 35 34.1 34 34.5 35.7 37.1 38.6 40.6 43 45.3 47.3 48.7 49.7 50.3 50.6 50.4 49.6 48.7 47.2
Dodge Horicon Wildlife Area ppb 44.5 43.1 41.4 40.1 39 38 37.2 36.7 36.9 37.7 38.8 40.4 42.5 45 47.5 49.7 51.3 52.2 52.5 52.2 51.3 49.9 48.3 46.6
Door Newport Park ppb 69.1 64.8 59 52.8 48.7 45.1 42.3 39.9 38.1 37.5 38.4 40.2 41.3 42.5 42.8 42.6 42.1 41.1 39.7 37.4 34.4 32.2 29.8 27.8
Eau Claire Eau Claire DOT Sign Shop ppb 38.6 37.7 36.5 35.4 33.7 33 32.8 33.1 31.5 30.2 30.3 31.3 33.1 34.9 36.7 38.7 41.1 43.1 44.3 43.4 40.9 36.9 32.1 27
Fond du Lac Fond Du Lac ppb 42.2 40.7 39.4 38.2 37.4 36.9 36.4 36.1 36.2 36.9 37.9 39.1 40.5 42.2 44 45.5 46.5 46.8 46.6 45.9 45.1 44.2 42.6 41.2
Forest Potawatomi ppb 38.1 37 35.7 35 34.6 34.1 33.3 32.5 32 31.7 32 32 32.1 32.3 32.9 33.7 34.2 34.8 34.8 34.4 33.7 33.1 32.2 31
Jefferson Jefferson-Laatsch ppb 42.8 41.4 40.3 39.2 38.6 38 37.2 36.5 36.4 37.1 38.2 39.5 41.2 43.1 45.1 47 48.6 49.7 50.2 50.8 50.6 49.9 49.3 48.2
Kenosha Chiwaukee Prairie ppb 50 48.9 48.8 48.9 48.5 48.4 48.7 49 49.3 48.8 48.2 48.1 48.8 50 51.6 53.6 55.1 56.1 56.6 56.6 56.1 55.4 54.3 52.9
Kenosha Kenosha-Water Tower ppb 49.1 47.5 47.2 47.1 46.7 46.5 46.7 47.3 48.2 48.5 48.3 48.5 49.2 50.8 52.7 54.7 56.3 57.4 58.2 58.6 58 56.9 55.5 53.7
Kewaunee Kewaunee ppb 56.8 51.7 47 43.3 40.3 37.8 35.8 35.1 35.9 37.7 39.8 41.8 43.8 45.7 47.6 48.9 49.2 48.8 47.3 44.7 41.5 38.7 35.6 32.7
La Crosse La Crosse DOT ppb 51.2 50.8 50.4 50.1 49.5 48.3 46.7 45.1 43.8 42.8 42.1 41.7 41.7 41.8 42.2 42.8 43.1 43.2 43 42.4 40.2 38 35.5 32.9
Manitowoc Manitowoc ppb 60.8 56.6 51.7 48.4 45.4 42.8 40.4 38.5 37.4 37.6 39.5 40.6 41.7 43.1 44.6 46.1 47.1 47.3 46.6 44.3 41.3 37.6 33.5 29.5
Marathon Lake Dubay ppb 39.7 40.7 41.2 41.4 41.4 41.2 40.7 39.7 38.8 38 37.2 36.9 37.4 37.9 38.3 38.8 39.1 39.2 39.4 39.2 38.6 38.2 37.7 37.6
Milwaukee Bayside ppb 51.8 49 46.8 44.4 42.6 41.9 41.4 41.3 41.8 42.7 44.1 45.8 47.7 49.8 52 54 55.1 55.5 55 53 51.2 49.5 47.5 45.8
Milwaukee Milwaukee-16th St. Health Center ppb 44.7 42.7 42.1 42 42.6 42.8 42.7 42.7 43.2 44.4 45.8 47.3 49 50.7 52.5 54.6 56.5 57.5 57.7 57.6 57 56.2 55.1 53.4
Outagamie Appleton ppb 46.2 44.5 43 41.7 40.8 40.4 40.4 40.5 40.8 41.2 41.5 41.9 42.3 42.9 43.3 43.5 43.3 43 42.4 41.3 39.1 36.2 33.4 30.4
Ozaukee Grafton ppb 50.8 47.4 44.5 41.8 40.2 39.7 39.9 40 40.6 41.6 42.8 44.3 45.9 47.8 50 52 53.3 54.2 54.4 54.2 53.5 52.2 50.3 48.1
Ozaukee Harrington Beach Park ppb 53.3 49 45.7 42.9 40.5 38.2 36.8 36.3 36.7 38.1 39.4 40.9 42.6 44.4 46.3 48.1 49.5 50.4 50.8 50.5 49.6 48.4 46.8 44.9
Racine Racine-Payne & Dolan ppb 52 49.4 48.1 48 48.2 47.7 46.3 45.4 45.4 45.8 45.9 45.8 46.2 47.7 50.4 53.4 56.2 58 59 59.6 59.7 58.9 57.4 55.6
Rock Beloit-Converse ppb 42.1 41.5 41.3 41.3 41.1 40.8 40.3 40 40.2 40.8 41.8 43.5 45.7 48.1 50.7 53.5 56 57.8 59.1 59.5 58.6 57.1 55.1 52.2
Sauk Devils Lake ppb 44.8 44.7 44 43.2 42.5 42 41.3 40.6 40.2 39.9 39.8 40.1 40.4 41.1 42.2 43 43.7 44.3 44.6 44.4 44.4 44.4 44.6 43.4
Sheboygan Sheboygan-Haven ppb 48.9 44.7 42 39.6 37.6 36.1 35.1 35.2 36 36.8 37.4 38.2 39.1 40.3 41.8 43 44 44.6 44.6 44 42.9 41.8 39.9 37.7
Sheboygan Sheboygan-Kohler Andrae ppb 61.2 57.8 54.2 50.9 48 45 42.1 40.1 38.9 38.5 39 39.8 41.7 44 45.8 47.2 48.3 49.2 49.6 49.2 47.3 44.7 41.7 39
Vilas Trout Lake ppb 35.4 34.3 33.8 33.4 32.8 31.8 30.8 29.9 29.4 29.4 29.1 28.9 29 30.2 31.4 32.1 32.7 33.2 33.4 33 31.8 29.4 26.6 24.5
Walworth Elkhorn ppb 44 42.9 42.4 42 41.8 41.6 41.2 40.9 40.9 41.5 42.4 43.5 44.6 46.2 48.3 51.1 53.7 55.9 57.4 58 57.9 56.7 55 52.3
Waukesha Waukesha-Cleveland Ave. ppb 44.6 42.6 41.2 40.3 39.6 39 38.7 38.5 38.6 39.6 40.8 42.3 44.1 46.3 48.8 50.8 52.4 53.2 53.6 53.4 52.9 52.2 51 49.9