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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 7/5/2025 08:00 to 7/5/2025 23:00 for these counties: Kenosha,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

  • 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 PM2.5

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Friday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 12 01 PM 14.8 12 AM
Ashland Bad River Tribal School µg/m³ 9.5 08 PM 14.4 12 AM
Kenosha Chiwaukee Prairie µg/m³ 13 12 AM 14.1 03 PM
Sauk Devils Lake µg/m³ 12.5 09 AM 13.8 03 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 12.9 11 PM 16.6 11 PM
Brown Green Bay East High µg/m³ 12.8 01 PM 16.9 12 AM
Ozaukee Harrington Beach Park µg/m³ 13 07 PM 15.6 04 PM
Dodge Horicon Wildlife Area µg/m³ 11.6 10 AM 15.5 02 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 12.6 10 AM 18.7 12 AM
Dane Madison University Ave. Well #6 µg/m³ 13.1 09 AM 21 12 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 14 10 AM 21.4 07 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 12.2 01 PM 16.1 07 PM
Forest Potawatomi µg/m³ 9.7 07 PM 12.5 05 AM
Grant Potosi µg/m³ 12.6 11 PM 21.7 09 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 13.2 01 PM 15.4 06 AM