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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 7/4/2025 08:00 to 7/4/2025 23:00 for these counties: Kenosha,Milwaukee,Ozaukee,Racine .

  • Increases in firework displays over the holiday weekend may lead to short-lived, local spikes in PM2.5 concentrations. Visit https://dnr.wisconsin.gov/topic/AirQuality/Fireworks.html to learn more about air quality and health effects of fireworks.

Highest AQI

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Monday, 
County Site AQS ID AQI Level Pollutant Occured AQI
Kenosha Chiwaukee Prairie 55 059 0019 Good OZONE 12 AM 48
Dodge Horicon Wildlife Area 55 027 0001 Moderate OZONE 06 PM 51
Grant Potosi 55 043 0009 Good PM2.5 06 AM 45
Waukesha Waukesha-Cleveland Ave. 55 133 0027 Good PM2.5 12 AM 49
Milwaukee Milwaukee-16th St. Health Center 55 079 0010 Moderate PM2.5 01 AM 53
Rock Beloit-Converse 55 105 0030 Moderate OZONE 05 PM 53
Sheboygan Sheboygan-Kohler Andrae 55 117 0006 Good OZONE 04 PM 49
Milwaukee Milwaukee-College Ave NR 55 079 0056 Good PM2.5 03 AM 50
Marathon Lake Dubay 55 073 0012 Moderate OZONE 05 PM 52
Dane Madison East 55 025 0041 Moderate OZONE 06 PM 55
Manitowoc Manitowoc 55 071 0007 Good OZONE 02 PM 46
Dane Madison University Ave. Well #6 55 025 0047 Good PM2.5 03 AM 42
La Crosse La Crosse DOT 55 063 0012 Good OZONE 05 PM 46
Milwaukee Milwaukee-UWM UPark 55 079 0068 Good OZONE 03 PM 48
Racine Racine-Payne & Dolan 55 101 0020 Good OZONE 12 PM 47
Oneida Rhinelander Tower 55 085 0996 Good SO2 12 AM 1
Kenosha Kenosha-Water Tower 55 059 0025 Good OZONE 03 PM 47
Outagamie Appleton 55 087 0009 Moderate OZONE 06 PM 54
Door Newport Park 55 029 0004 Good OZONE 12 AM 47
Ozaukee Harrington Beach Park 55 089 0009 Good OZONE 04 PM 48
Eau Claire Eau Claire DOT Sign Shop 55 035 0014 Good OZONE 05 PM 47
Milwaukee Bayside 55 079 0085 Good OZONE 04 PM 46
Outagamie Kaukauna 55 087 0015 Good SO2 09 PM 1
Forest Potawatomi 55 041 0007 Good OZONE 12 AM 50
Ashland Bad River Tribal School 55 003 0010 Good OZONE 08 PM 48
Sauk Devils Lake 55 111 0007 Good OZONE 06 PM 50
Brown Green Bay East High 55 009 0005 Good PM2.5 12 AM 35
Columbia Columbus 55 021 0015 Moderate OZONE 05 PM 59
Ozaukee Grafton 55 089 0008 Good OZONE 04 PM 48
Fond du Lac Fond Du Lac 55 039 0006 Good OZONE 12 AM 48
Jefferson Jefferson-Laatsch 55 055 0009 Good OZONE 05 PM 49
Sheboygan Sheboygan-Haven 55 117 0009 Good OZONE 02 PM 46
Walworth Elkhorn 55 127 0006 Moderate OZONE 06 PM 52
Kewaunee Kewaunee 55 061 0002 Good OZONE 03 PM 48
Vilas Trout Lake 55 125 0001 Good OZONE 05 PM 48