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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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Thursday, 
County Site AQS ID AQI Level Pollutant Occured AQI
Kenosha Chiwaukee Prairie 55 059 0019 Moderate OZONE 09 PM 95
Dodge Horicon Wildlife Area 55 027 0001 Moderate OZONE 06 PM 85
Grant Potosi 55 043 0009 Moderate PM2.5 09 AM 54
Waukesha Waukesha-Cleveland Ave. 55 133 0027 Moderate OZONE 05 PM 87
Milwaukee Milwaukee-16th St. Health Center 55 079 0010 Moderate PM2.5 05 PM 57
Rock Beloit-Converse 55 105 0030 Unhealthy for Sensitive Groups OZONE 05 PM 107
Sheboygan Sheboygan-Kohler Andrae 55 117 0006 Moderate OZONE 05 PM 75
Milwaukee Milwaukee-College Ave NR 55 079 0056 Good PM2.5 06 PM 50
Marathon Lake Dubay 55 073 0012 Moderate OZONE 07 PM 61
Dane Madison East 55 025 0041 Moderate OZONE 05 PM 94
Manitowoc Manitowoc 55 071 0007 Moderate OZONE 04 PM 86
Dane Madison University Ave. Well #6 55 025 0047 Moderate PM2.5 11 PM 57
La Crosse La Crosse DOT 55 063 0012 Good OZONE 06 PM 44
Milwaukee Milwaukee-UWM UPark 55 079 0068 Moderate OZONE 05 PM 68
Racine Racine-Payne & Dolan 55 101 0020 Moderate OZONE 09 PM 81
Oneida Rhinelander Tower 55 085 0996 Good SO2 12 AM 0
Kenosha Kenosha-Water Tower 55 059 0025 Moderate OZONE 09 PM 86
Outagamie Appleton 55 087 0009 Moderate OZONE 05 PM 72
Door Newport Park 55 029 0004 Moderate OZONE 12 AM 86
Ozaukee Harrington Beach Park 55 089 0009 Moderate OZONE 04 PM 75
Eau Claire Eau Claire DOT Sign Shop 55 035 0014 Moderate PM2.5 09 PM 60
Milwaukee Bayside 55 079 0085 Moderate OZONE 05 PM 72
Outagamie Kaukauna 55 087 0015 Good SO2 11 AM 3
Forest Potawatomi 55 041 0007 Moderate PM2.5 08 PM 54
Ashland Bad River Tribal School 55 003 0010 Moderate PM2.5 02 PM 52
Sauk Devils Lake 55 111 0007 Moderate OZONE 05 PM 76
Brown Green Bay East High 55 009 0005 Moderate PM2.5 10 PM 52
Brown Green Bay UW 55 009 0026 Moderate OZONE 04 PM 70
Columbia Columbus 55 021 0015 Moderate OZONE 05 PM 93
Ozaukee Grafton 55 089 0008 Moderate OZONE 05 PM 88
Fond du Lac Fond Du Lac 55 039 0006 Moderate OZONE 05 PM 70
Jefferson Jefferson-Laatsch 55 055 0009 Moderate OZONE 05 PM 94
Sheboygan Sheboygan-Haven 55 117 0009 Moderate OZONE 12 AM 67
Walworth Elkhorn 55 127 0006 Moderate OZONE 05 PM 88
Kewaunee Kewaunee 55 061 0002 Moderate OZONE 06 PM 86
Vilas Trout Lake 55 125 0001 Good OZONE 04 PM 48