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

Wildfire season is upon us, and smoke is reducing air quality through swaths of the country. Environment Canada suggests ...

Parts of the Greater Toronto Area (GTA) are under an air quality warning on Monday alongside an ongoing heat warning in the ...

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

Risk designations can change regularly in the same community, Environment Canada says, so it's important to keep checking the air quality forecast.

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

Environment Canada has issued a special air quality statement for Hamilton and Halton areas for July 14. The air quality is ...

Warnings were issued for southern Ontario and southwest Quebec as hot and humid weather is expected to linger through ...

Environment Canada has issued a heat warning for Greater Sudbury, with hot and humid conditions expected from Tuesday to ...

Environment Canada says we can expect a warmer than normal summer. But Senior Climatologist David Phillips says just how much ...

Amid a heatwave that led to Environment Canada issuing a heat warning late last week, the national weather agency has added ...

Environment Canada issued an Air Quality Warning Friday morning for all of southeastern Manitoba. Wildfire smoke from ...