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

Smoke billowing from wildfires is leading to poor air quality and reducing visibility throughout Manitoba this ...

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Tuesday’s air quality warning has dropped to a 5, considered a moderate risk, down from Monday’s peak of 10+ on the Air ...

REGINA — Saskatchewan’s two largest cities are among the many communities across the province affected by air quality warnings today. Environment Canada says much of the province is currently dealing ...

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

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

World Cup being hosted by Canada, Mexico and the United States is less than a year away and FIFA’s protocols for matches ...

A special air quality statement has been issued for Toronto as residual wildfire smoke from northern Ontario and the Prairies hangs over the city.

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

Toronto is seen Monday; the Air Quality Health Index rating for the city was higher than 10, or "very high risk," from ...

Organizers of the Montreal and Toronto tournaments say they have plans for if the air quality becomes hazardous to athletes’ and fans’ health ...