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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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Wednesday, 
County Site AQS ID AQI Level Pollutant Occured AQI
Kenosha Chiwaukee Prairie 55 059 0019 Moderate OZONE 10 PM 90
Dodge Horicon Wildlife Area 55 027 0001 Moderate OZONE 05 PM 59
Grant Potosi 55 043 0009 Good PM2.5 11 PM 44
Waukesha Waukesha-Cleveland Ave. 55 133 0027 Moderate OZONE 07 PM 71
Milwaukee Milwaukee-16th St. Health Center 55 079 0010 Moderate OZONE 06 PM 69
Rock Beloit-Converse 55 105 0030 Moderate OZONE 05 PM 60
Sheboygan Sheboygan-Kohler Andrae 55 117 0006 Unhealthy for Sensitive Groups OZONE 08 PM 103
Milwaukee Milwaukee-College Ave NR 55 079 0056 Good NO2 08 PM 44
Marathon Lake Dubay 55 073 0012 Good OZONE 05 PM 47
Dane Madison East 55 025 0041 Good OZONE 05 PM 50
Manitowoc Manitowoc 55 071 0007 Moderate OZONE 08 PM 100
Dane Madison University Ave. Well #6 55 025 0047 Good PM2.5 11 PM 33
La Crosse La Crosse DOT 55 063 0012 Good OZONE 05 PM 47
Milwaukee Milwaukee-UWM UPark 55 079 0068 Moderate OZONE 06 PM 85
Racine Racine-Payne & Dolan 55 101 0020 Moderate OZONE 08 PM 99
Oneida Rhinelander Tower 55 085 0996 Good SO2 12 AM 0
Kenosha Kenosha-Water Tower 55 059 0025 Unhealthy for Sensitive Groups OZONE 07 PM 109
Outagamie Appleton 55 087 0009 Moderate OZONE 05 PM 51
Door Newport Park 55 029 0004 Moderate OZONE 11 PM 94
Ozaukee Harrington Beach Park 55 089 0009 Unhealthy for Sensitive Groups OZONE 08 PM 101
Eau Claire Eau Claire DOT Sign Shop 55 035 0014 Moderate PM2.5 11 PM 51
Milwaukee Bayside 55 079 0085 Moderate OZONE 06 PM 92
Outagamie Kaukauna 55 087 0015 Good SO2 12 AM 2
Forest Potawatomi 55 041 0007 Good OZONE 06 PM 42
Ashland Bad River Tribal School 55 003 0010 Good PM2.5 10 PM 42
Sauk Devils Lake 55 111 0007 Good OZONE 03 PM 44
Brown Green Bay East High 55 009 0005 Good PM2.5 11 PM 34
Brown Green Bay UW 55 009 0026 Moderate OZONE 05 PM 61
Columbia Columbus 55 021 0015 Moderate OZONE 05 PM 60
Ozaukee Grafton 55 089 0008 Unhealthy for Sensitive Groups OZONE 06 PM 109
Fond du Lac Fond Du Lac 55 039 0006 Moderate OZONE 05 PM 59
Jefferson Jefferson-Laatsch 55 055 0009 Moderate OZONE 05 PM 52
Sheboygan Sheboygan-Haven 55 117 0009 Moderate OZONE 08 PM 94
Walworth Elkhorn 55 127 0006 Moderate OZONE 04 PM 65
Kewaunee Kewaunee 55 061 0002 Moderate OZONE 09 PM 95
Vilas Trout Lake 55 125 0001 Good OZONE 05 PM 40