Canada had its most destructive series of wildfires ever, and one expert says the country is currently on track this year to ...

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

A Chicago Air Quality Alert has been extended through Friday as smoke from Canada wildfires has pushed the AQI into unhealthy ...

Canada’s wildfire season is off to an intense start. A NASA satellite has recorded thousands of hot spots across the country ...

Many fires burning across Canada, forcing evacuations and threatening air quality in the United States, cannot simply be put ...

The country's legacy of mining means that toxic metals could be carried along plumes of smoke, endangering people in its path ...

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

Wildfire smoke was helping raise ozone to hazardous levels. No alerts have been issued, but the air quality may approach ...

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

Wildfires burning in Canada's oil-producing province of Alberta have reduced the country's daily crude production by about 7% ...

Smoke from wildfires raging in Canada has drifted into the United States, affecting air quality as far south as Florida.