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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 12:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Columbia,Crawford,Dane,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Grant,Green,Green Lake,Iowa,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Lafayette,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sauk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

Current AQI Summary

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Monday, 8/4/2025
County Category Site AQS ID Pollutant Occured AQI
Outagamie Unhealthy Appleton 55 087 0009 PM2.5 01 AM 156
Ashland Moderate Bad River Tribal School 55 003 0010 PM2.5 01 AM 95
Milwaukee Good Bayside 55 079 0085 OZONE 01 AM 5
Rock Good Beloit-Converse 55 105 0030 OZONE 01 AM 25
Kenosha Unhealthy Chiwaukee Prairie 55 059 0019 PM2.5 01 AM 152
Columbia Good Columbus 55 021 0015 OZONE 01 AM 39
Sauk Unhealthy for sensitive groups Devils Lake 55 111 0007 PM2.5 01 AM 119
Eau Claire Moderate Eau Claire DOT Sign Shop 55 035 0014 PM2.5 01 AM 95
Walworth Good Elkhorn 55 127 0006 OZONE 01 AM 41
Fond du Lac Good Fond Du Lac 55 039 0006 OZONE 01 AM 37
Ozaukee Good Grafton 55 089 0008 OZONE 01 AM 24
Brown Unhealthy Green Bay East High 55 009 0005 PM2.5 01 AM 156
Brown Good Green Bay UW 55 009 0026 OZONE 01 AM 20
Ozaukee Unhealthy Harrington Beach Park 55 089 0009 PM2.5 01 AM 156
Jackson Unhealthy for sensitive groups Ho-Chunk Nation-Black River Falls 55 053 2002 PM2.5 01 AM 120
Monroe Unhealthy for sensitive groups Ho-Chunk Nation-Tomah 55 081 2001 PM2.5 01 AM 108
Dodge Unhealthy Horicon Wildlife Area 55 027 0001 PM2.5 01 AM 154
Jefferson Good Jefferson-Laatsch 55 055 0009 OZONE 01 AM 13
Outagamie Good Kaukauna 55 087 0015 SO2 01 AM 1
Kenosha Good Kenosha-Water Tower 55 059 0025 OZONE 01 AM 30
Kewaunee Good Kewaunee 55 061 0002 OZONE 01 AM 22
La Crosse Good La Crosse DOT 55 063 0012 OZONE 01 AM 24
Marathon No Index Lake Dubay 55 073 0012 OZONE 01 AM ----
Dane Unhealthy for sensitive groups Madison East 55 025 0041 PM2.5 01 AM 150
Dane Unhealthy Madison University Ave. Well #6 55 025 0047 PM2.5 01 AM 153
Manitowoc Good Manitowoc 55 071 0007 OZONE 01 AM 4
Milwaukee Unhealthy Milwaukee-16th St. Health Center 55 079 0010 PM2.5 01 AM 158
Milwaukee Unhealthy Milwaukee-College Ave NR 55 079 0056 PM2.5 01 AM 154
Milwaukee Good Milwaukee-UWM UPark 55 079 0068 OZONE 01 AM 23
Door Good Newport Park 55 029 0004 OZONE 01 AM 34
Forest Unhealthy for sensitive groups Potawatomi 55 041 0007 PM2.5 01 AM 135
Grant Unhealthy for sensitive groups Potosi 55 043 0009 PM2.5 01 AM 115
Racine Good Racine-Payne & Dolan 55 101 0020 OZONE 01 AM 21
Oneida Good Rhinelander Tower 55 085 0996 SO2 01 AM 0
Sheboygan Good Sheboygan-Haven 55 117 0009 OZONE 01 AM 16
Sheboygan Good Sheboygan-Kohler Andrae 55 117 0006 OZONE 01 AM 18
Vilas Good Trout Lake 55 125 0001 OZONE 01 AM 17
Waukesha Unhealthy Waukesha-Cleveland Ave. 55 133 0027 PM2.5 01 AM 161