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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 50.7 49.8 48.7 47.7 46.7 45.6 44.2 42.7 41.3 40.2 39.6 38.6 38 38 38.6 39.8 41.2 42.7 43.8 45.2 46.4 47.2 47 45.8
Brown Green Bay UW ppb 45.4 43.4 41.6 39.8 38.3 37.4 36.7 36.1 35.4 34.8 34.5 35.3 36.8 38.5 40.6 42.6 44.1 45.4 47.5 48.9 49.5 49.8 49.4 48.5
Columbia Columbus ppb 41.6 40.3 38.9 37.7 36.2 34.4 32.3 30.1 28.3 27.5 27.5 28.3 30.5 33.3 36.6 39.8 43 45.2 46.6 47.2 46.2 45.1 44 43.1
Dane Madison East ppb 45 43.4 41.9 40.4 38.5 35.8 33.1 30.4 28.1 27 26.8 27.7 29.8 32.8 36.3 39.6 42.8 45.1 46.3 46.6 46.2 45.5 44.5 43.3
Dodge Horicon Wildlife Area ppb 41.3 38.8 36.5 34.6 32.6 31.4 30 29 28.1 28.1 28.9 30.7 33.9 37 40.9 44.7 48.2 50.9 53 53.5 52.6 51.1 48.9 46.7
Door Newport Park ppb 66.2 63.2 59.1 52.9 46.4 40.9 36.3 33.1 32.7 33.4 35.3 38.3 41.8 45.5 50.3 55.7 60 64.7 69 72.8 74.5 74.8 73.9 71.9
Eau Claire Eau Claire DOT Sign Shop ppb 38.9 36.5 34.7 33.3 32.9 32.7 32.2 32.2 31.9 32.1 32.3 33.2 34.2 35.5 37.5 39.9 43.3 45.9 47.5 48 47.5 45.8 43.3 39.9
Fond du Lac Fond Du Lac ppb 38.1 36 34.6 33.9 33.1 32.8 32.2 31.7 31.6 31.7 32.7 34.1 36.1 38.8 41.8 44.8 47.5 49.7 50.4 50.6 50 48.3 46.2 44.1
Forest Potawatomi ppb 43.5 42.1 40.8 39.9 38.9 37.8 37.2 37.5 37.9 37.9 38.1 38.6 39.2 40.1 40.9 41.2 41.4 42.3 42.7 42.5 42.1 41.3 40.4 39.2
Jefferson Jefferson-Laatsch ppb 39.4 37.5 35.5 34 33 32.3 31 29.7 28.4 28.2 28.7 30.8 34.1 38.1 42.5 46.4 49.3 51.2 52.4 52.3 50.6 48.2 45.8 44.1
Kenosha Chiwaukee Prairie ppb 53.3 46.2 39.2 34.3 30 26.7 26 26.9 27.5 29.1 31.3 33.3 37.2 42.9 48.4 52.7 57.1 60.9 63 64 63 59.9 56.2 52.6
Kenosha Kenosha-Water Tower ppb 50 47.1 43.7 38.2 34.3 31.8 30.8 29.8 29.1 28.5 31.1 35.7 40.6 46.7 52.4 57.7 62.5 62.3 64.1 63.9 62.6 59.6 55.8 52.2
Kewaunee Kewaunee ppb 52.5 48.2 43.4 39.5 36.5 34.7 33.5 33 33.1 33.8 34.4 36 39 42.7 47 51.6 56.4 60.5 64.2 66.8 67.4 66.6 64.7 61.6
La Crosse La Crosse DOT ppb 37.3 35.7 34.8 34.4 35.4 36.7 37.9 38.8 39.3 39.8 40.6 41.5 41.9 42.3 43.5 45.1 46.8 48.5 49.8 50.5 50.9 51.3 51.5 51.3
Manitowoc Manitowoc ppb 58.5 52.5 45.2 39.2 35.1 31.4 29.9 29.2 28.4 28.8 30.9 33.7 37.1 41.1 44.6 48.9 54.5 59.5 63.2 65.6 66.4 66.5 66.1 64.3
Marathon Lake Dubay ppb 36.1 33 30.2 28.2 27.5 28.1 28.6 29 30.1 31.8 34.1 36.4 37.9 38.2 38.3 38.8 38.9 38.8 38.9 38.8 38.1 37.6 37.8 38.7
Milwaukee Bayside ppb 49.1 45.7 41.9 39.4 37.9 36.4 35.7 35 34.7 34.4 35.1 36.8 39.4 43.6 48.6 53.5 57.5 60.7 63.4 65 65.3 63 59.3 55.3
Milwaukee Milwaukee-16th St. Health Center ppb 49.1 45.2 42.5 41.2 40.2 37.7 36.7 35.7 34.7 34.6 35.6 37.9 40.7 43.8 47.7 52 55.4 57.7 58.1 57.2 55.2 53.8 50.9 47.3
Outagamie Appleton ppb 45.4 44.6 43.7 42.9 42.2 41.6 40.7 39.3 37.6 35.7 35.1 35.5 36.9 38.5 40.7 42.9 44.9 47.5 48.9 49.9 50 49.7 48.5 47.4
Ozaukee Grafton ppb 52.8 49.2 45.8 42.3 39.7 37.4 36.1 33.9 32.8 32.7 33.3 35.3 38.5 43.5 49.4 56 61.2 64.7 67.2 68.7 68.5 65.5 60.3 55.3
Ozaukee Harrington Beach Park ppb 50.8 46.8 42.7 38.6 35.3 32.3 31 29.6 28.8 28.5 29.2 31.1 33.9 38.9 44.2 51 57 61.4 64.3 66 66.6 65.5 62.5 57.9
Racine Racine-Payne & Dolan ppb 59.9 56.3 52.8 47.3 43.2 39.5 37.5 36.7 35.9 35.6 36.2 38.4 41.8 46.8 51.5 55.5 59.4 62.6 65.3 66 64.8 62 58.7 55.2
Rock Beloit-Converse ppb 41.2 37.8 34.8 32.1 30 28.6 26.8 25.5 25.7 26.4 28 31 35.3 39.5 43.8 47.4 49.9 51.5 52 50.8 48.8 46.6 44.7 43.2
Sauk Devils Lake ppb 41.9 41.3 40.9 40.6 39.8 39 37.6 36.2 35 33.8 33 33.1 34 35.2 36.9 38.5 40.3 42 43.8 44.9 45.2 45.3 45.1 45.1
Sheboygan Sheboygan-Haven ppb 48.3 44.2 40.2 36.7 34.1 31.9 30.5 29.8 29.6 30.2 31.7 34 36.5 40.2 44.4 49.1 54.1 57.8 59.9 61.3 61.9 60.8 58.3 54.2
Sheboygan Sheboygan-Kohler Andrae ppb 59.6 53.3 48.7 43.2 38.8 35.8 33.7 32.4 31.8 32.4 34.2 36.6 39.2 41.7 46 51.4 57.1 61.5 64.9 67.2 68.5 69.1 67.9 65.1
Vilas Trout Lake ppb 45.5 44 42.6 41.4 40.3 39.4 39 38.8 38.8 38.5 38.5 38.8 39.9 40.8 41.4 41.7 42 42.5 42.4 41.8 40.6 39.2 38 36.7
Walworth Elkhorn ppb 41.9 39.9 39 38.1 37.5 37.2 36.6 35.6 35.1 35.1 36 38 40.6 43.1 46.3 49.9 52.2 53.3 53.5 52.9 52 50.4 48.3 45.8
Waukesha Waukesha-Cleveland Ave. ppb 47.7 44.6 41.7 39 37 33.8 31.8 30.5 29.8 30.2 30.9 32.7 34.7 38 40.7 43.8 47 49.4 51 51.2 50.8 50 48.7 46.9