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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy OZONE levels is in effect from 7/14/2025 15:00 to 7/14/2025 23:00 for these counties: Kenosha,Racine,Milwaukee,Ozaukee,Sheboygan .
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/14/2025 10:00 to 7/14/2025 18:00 for these counties: Ashland,Bayfield,Burnett,Douglas,Iron,Sawyer,Vilas,Washburn .

Highest PM2.5

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Monday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 0.7 12 AM 1.3 09 PM
Ashland Bad River Tribal School µg/m³ 1.4 09 PM 2 11 PM
Kenosha Chiwaukee Prairie µg/m³ 1 11 PM 2.2 02 PM
Sauk Devils Lake µg/m³ 1.2 11 PM 1.7 10 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 2 10 PM 2.7 08 PM
Brown Green Bay East High µg/m³ 1.3 08 PM 3.4 07 PM
Ozaukee Harrington Beach Park µg/m³ 0.8 12 AM 1.1 10 PM
Dodge Horicon Wildlife Area µg/m³ 0.9 11 PM 1.4 04 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 1.5 11 PM 2.5 09 AM
Dane Madison University Ave. Well #6 µg/m³ 1.5 11 PM 2.7 02 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 1.1 12 AM 2.4 05 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 2 11 AM 3.7 01 PM
Forest Potawatomi µg/m³ 0.5 11 PM 1.6 11 PM
Grant Potosi µg/m³ 2.3 10 PM 3.3 07 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 1.2 11 PM 2.3 05 PM