Much of southern Ontario was under an air quality statement on Thursday and Friday that lifted early Saturday morning.

Environment Canada says wildfire smoke is affecting air quality in northeastern British Columbia. The agency issued special ...

Experts say people should take precautions such as wearing an N95 mask while outdoors or heading inside and closing the windows.

Hazy and smoky skies from Canadian wildfires jacking up the Air Quality Index to unhealthy levels. The New York Department of ...