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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/29/2025 08:30 to 7/31/2025 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 .

Highest AQI

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Thursday, 
County Site AQS ID AQI Level Pollutant Occured AQI
Monroe Ho-Chunk Nation-Tomah 55 081 2001 Good PM2.5 12 AM 48
Kenosha Chiwaukee Prairie 55 059 0019 Unhealthy for Sensitive Groups OZONE 06 PM 109
Dodge Horicon Wildlife Area 55 027 0001 Moderate OZONE 05 PM 57
Grant Potosi 55 043 0009 Moderate PM2.5 12 AM 54
Waukesha Waukesha-Cleveland Ave. 55 133 0027 Moderate OZONE 05 PM 82
Milwaukee Milwaukee-16th St. Health Center 55 079 0010 Moderate PM2.5 12 AM 52
Rock Beloit-Converse 55 105 0030 Moderate OZONE 05 PM 52
Sheboygan Sheboygan-Kohler Andrae 55 117 0006 Good OZONE 05 PM 42
Milwaukee Milwaukee-College Ave NR 55 079 0056 Good PM2.5 12 AM 47
Marathon Lake Dubay 55 073 0012 Good OZONE 08 PM 47
Dane Madison East 55 025 0041 Moderate OZONE 04 PM 51
Manitowoc Manitowoc 55 071 0007 Good OZONE 04 PM 36
Dane Madison University Ave. Well #6 55 025 0047 Moderate PM2.5 12 AM 52
La Crosse La Crosse DOT 55 063 0012 Good OZONE 05 PM 48
Milwaukee Milwaukee-UWM UPark 55 079 0068 Good OZONE 03 PM 48
Racine Racine-Payne & Dolan 55 101 0020 Moderate OZONE 05 PM 67
Oneida Rhinelander Tower 55 085 0996 Good SO2 12 AM 0
Kenosha Kenosha-Water Tower 55 059 0025 Moderate OZONE 06 PM 87
Outagamie Appleton 55 087 0009 Moderate PM2.5 10 PM 55
Door Newport Park 55 029 0004 Good OZONE 03 PM 32
Ozaukee Harrington Beach Park 55 089 0009 Moderate PM2.5 11 PM 52
Eau Claire Eau Claire DOT Sign Shop 55 035 0014 Good OZONE 05 PM 47
Milwaukee Bayside 55 079 0085 Good OZONE 03 PM 49
Outagamie Kaukauna 55 087 0015 Good SO2 06 AM 2
Forest Potawatomi 55 041 0007 Moderate PM2.5 11 PM 67
Ashland Bad River Tribal School 55 003 0010 Moderate PM2.5 10 PM 71
Sauk Devils Lake 55 111 0007 Good OZONE 04 PM 45
Brown Green Bay East High 55 009 0005 Moderate PM2.5 08 PM 61
Brown Green Bay UW 55 009 0026 Good OZONE 04 PM 40
Columbia Columbus 55 021 0015 Moderate OZONE 05 PM 60
Ozaukee Grafton 55 089 0008 Good OZONE 04 PM 45
Fond du Lac Fond Du Lac 55 039 0006 Moderate OZONE 04 PM 65
Jefferson Jefferson-Laatsch 55 055 0009 Moderate OZONE 04 PM 56
Jackson Ho-Chunk Nation-Black River Falls 55 053 2002 Moderate PM2.5 12 AM 51
Sheboygan Sheboygan-Haven 55 117 0009 Good OZONE 05 PM 40
Walworth Elkhorn 55 127 0006 Moderate OZONE 05 PM 66
Kewaunee Kewaunee 55 061 0002 Good OZONE 02 PM 38
Vilas Trout Lake 55 125 0001 Good OZONE 05 PM 39