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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/24/2025 15:00 to 7/25/2025 23:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Green Lake,Iron,Jackson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Rusk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,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 39.1 39 38.8 38.6 38.3 38 37.7 37.4 37 36.6 36.2 36 36 36.1 36.4 37.1 37.7 37.8 35.9 33.3 31 29 27.2 24.8
Columbia Columbus ppb 38.4 38.5 38.5 38.4 38.5 38.8 38.9 39 39.4 39.8 40.4 41 41.4 41.6 41.9 42.1 42 41.5 41.2
Dodge Horicon Wildlife Area ppb 39.6 39.3 39.1 38.9 38.6 38.4 38.2 38.1 38 38 38 38.1 38.4 38.8 39.4 40.1 40.6 40.8 40.7 40.1 39.7 39.1 38.2 37.2
Eau Claire Eau Claire DOT Sign Shop ppb 35.4 35.2 35.4 35.5 35.3 34.9 33.9 32.3 31.7 31.5 31.5 31.7 32.3 33.4 35 37.1 38.3 38.7 37.9 35.9 31.9 28.4 24.1 20.3
Forest Potawatomi ppb 40.5 40.5 40.5 40.5 40.3 40.2 39.9 39.7 39.5 39.2 39.2 39.2 39.3 39.5 39.7 40 40.3 40.5 40.7 40.7 40.6 40.5 40.3 40.2
La Crosse La Crosse DOT ppb 35.3 34.5 34.2 34.1 33.7 32.7 31.6 30.8 30.7 31.3 31.8 32.6 33.3 34.7 36.4 37.9 38.9 39.4 38.6 36.5 35.1 33.3 31.9 30.6
Ozaukee Harrington Beach Park ppb 38.5 38.3 38.2 38.2 38.2 38.1 38.1 37.9 37.8 37.8 37.8 38 38.2 38.5 38.8 39.1 39.5 39.7 39.4 38.7 37.8 36.9 36.2 35
Sauk Devils Lake ppb 39.3 38.9 38.6 38.3 38.1 38.1 38.1 38 37.9 37.8 37.7 37.9 38.2 38.6 39.2 40 40.7 41.2 41.3 41 40.6 39.9 39.3 38.6