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

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

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

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 ...

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

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

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

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

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

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