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

Canadian wildfire smoke will filter in Sunday afternoon and impact air quality through Monday. Summer heat & storms ahead ...

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

At 9:57 a.m. on Monday, the National Weather Service reported an air quality alert in effect until 10 p.m. for Oneida, Seneca ...

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

The Minnesota Pollution Control Agency has issued varied air quality alerts across Northern Minnesota for the upcoming ...

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

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

On Monday at 10:07 a.m. an air quality alert was reported by the National Weather Service in effect until Tuesday at midnight ...

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 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 11:04 a.m. on Wednesday in effect until Thursday at 3 p.m. for ...