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

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

TORONTO - The poor air quality that has blanketed swaths of central and Western Canada is not only infiltrating the lungs, ...

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.

Drone video captured wildfire smoke blanketing the skyline in Toronto, Canada on Monday (July 14).

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 ...

Environment Canada identifies the people at particular risk as seniors, infants, folks who work up a sweat outdoors, and ...

Special air-quality statements caused by wildfire smoke remain in effect for many areas of the country, and in some places, ...