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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy OZONE levels is in effect from 7/15/2025 12:00 to 7/15/2025 23:00 for these counties: Kenosha,Racine,Milwaukee,Ozaukee,Sheboygan,Manitowoc,Kewaunee,Door .

Highest PM2.5

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Thursday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 17.8 08 PM 36.4 04 AM
Ashland Bad River Tribal School µg/m³ 6.3 04 PM 14.4 01 PM
Kenosha Chiwaukee Prairie µg/m³ 20.3 09 AM 23.5 05 AM
Sauk Devils Lake µg/m³ 16.2 09 PM 29.3 07 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 10.9 04 PM 18.5 02 PM
Brown Green Bay East High µg/m³ 19.4 05 PM 32.1 03 AM
Ozaukee Harrington Beach Park µg/m³ 17.9 02 PM 26.3 01 AM
Dodge Horicon Wildlife Area µg/m³ 16.2 09 PM 31.1 03 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 17.4 10 PM 30.2 07 AM
Dane Madison University Ave. Well #6 µg/m³ 18.9 10 PM 33.4 04 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 20.7 11 AM 29.5 12 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 19.7 03 PM 26.6 06 AM
Forest Potawatomi µg/m³ 6.7 06 PM 9.4 04 PM
Grant Potosi µg/m³ 17.9 10 PM 33.6 07 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 19.7 04 PM 30.9 12 AM