Smoke from wildfires in northern Ontario is also affecting the region. Environment Canada issued an air quality warning late ...

A study in Ontario found continued exposure to fine particulate matter is linked to higher levels of diffuse myocardial ...

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.

Simcoe Muskoka District Health Unit recommends limiting exposure and staying cool during times of poor air quality ...

Environment Canada has issued a special air quality statement as wildfire smoke hovered over the nation’s capital Monday ...

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

Canadian wildfire smoke descended into the Upper Midwest again on Monday, heightening the risk of physical health impacts.

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

An air quality alert remains in effect across the state of Michigan through Monday. But will the smoke continue to linger?