An Air Quality Alert will be in effect through midnight Tuesday for Southeast Michigan, the state's Department of Environment ...

Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

Fine particle levels are expected to reach the purple air quality index category, which means it is considered “very ...

The Minnesota Pollution Control Agency has issued an air quality alert for northwest, north-central, and northeast Minnesota ...

Milwaukee, Ozaukee, Racine, Kenosha and Sheboygan counties are all under a poor air quality alert from noon to 11 p.m., ...

The alert comes as humidity is expected to increase Tuesday, with high temperatures in the mid 80s to low 90s, with heat ...

The National Weather Service reported an air quality alert at 12:53 p.m. on Wednesday in effect until Thursday at 10 a.m. for ...

The National Weather Service reported an air quality alert at 12:35 p.m. EDT on Monday in effect until Wednesday at midnight ...

The National Weather Service reported an air quality alert at 11:04 a.m. on Wednesday in effect until Thursday at 3 p.m. for ...

EDT on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight EDT for ...

An air quality alert was issued by the National Weather Service in Milwaukee-Sullivan at 9:26 a.m. on Wednesday, July 16.

The National Weather Service’s Chicago office attributed the alert to unhealthy ozone levels and lingering effects of smoke from wildfires in Canada.