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

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Parts of the Greater Toronto Area remained under a special air quality statement and a heat warning on Monday night.

Wildfire smoke has been blowing into the city since Sunday though residents should should expect some relief by early morning ...

Environment Canada is warning of poor air quality and extreme heat in Toronto on Monday as southern Ontario braces for a week ...

Environment Canada urges residents to limit their time outdoors. But even when inside, most buildings can only reduce ...

Much of Central Canada, Manitoba and Saskatchewan were placed under special air quality statements or warnings on Monday due ...

With various air quality indexes available, and as wildfire smoke becomes an increasing health risk, here’s what often goes ...

Much of Central Canada, Manitoba and Saskatchewan were placed under special air quality statements or warnings on Monday due to smoke from wildfires.

Ontario's poor air quality and hazy skies will persist for the next couple of days for many areas, with widespread alerts ...

Toronto and the GTA are under a heat wave and poor air quality warning issued by Environment Canada on July 14, 2025, due to ...

As extreme heat continues to cast over the city of Toronto, Environment Canada is warning of poor air quality on Monday.