Canadian wildfires trigger mass evacuations and send smoke across the U.S., putting millions at risk from poor air quality.

More than 700 fires are currently labeled as “out of control,” with smoke drifting into several U.S. states. These tools help you stay informed and up to date.

More than 830 wildfires are burning across Canada, with over 100 considered out of control.

According to the Canadian government, there are more than 850 active wildfires across Canada as of Thursday. Winds are carrying the smoke southeast from Ontario down to the Midwest and Northeast.

Where is the wildfire smoke coming from that is affecting New Jersey air quality and creating hazy, yellow skies? Smoke affecting New Jersey this week can be traced to hundreds of active wildfires burning across Canada. Smoke maps show a large plume from ...

Large portions of the East Coast are under air quality alerts due to wildfire smoke from Canada and Minnesota. But how di the wildfires start?

Canadian wildfire smoke has triggered air quality alerts across several U.S. states, with health warnings issued.

Half of Canada’s wildfires are in remote areas with no road access. Impossible to fight, they are often left to burn. By Norimitsu Onishi Most wildfires in Canada are impossible to fight. As smoke from forest fires in Canada have darkened skies south of ...

Hundreds of active wildfires in Canada are causing poor air quality and smoky skies across parts of the United States. Millions of Americans were under air quality alerts, with smoke from Canada approaching but not yet reaching Florida.

More episodes of wildfire smoke are in the offing for parts of Canada and the midwestern and northeastern United States, as the weather pattern in the coming weeks does little to extinguish the ongoing flames. "Some sporadic rain is in the forecast for ...

Canada's wildfire season remains highly active, with British Columbia facing explosive fire behaviour, rapidly expanding blazes and thousands of residents under evacuation orders. Follow our live