As hundreds of wildfires burn across Canada, smoke is traveling south and potentially affecting Americans’ health. Here's why ...

Smoke will likely be an ongoing health hazard across North America for the next few months. Here's what to expect.

Wildfires are still raging in Canada, where there have been dozens of active fires, and over 33,000 people have been forced ...

Smoke from Canadian wildfires is engulfing much of the eastern and central United States and and is expected to continue for ...

Canada has one of the world's largest forests. It's experiencing heat and drought. It's a recipe for wildfires — and for ...

Another large fire exacerbated by climate change is threatening the health of Chicagoans. Government officials issued an air ...

Rounds of smoke from hundreds of Canadian wildfires, as well as dust blowing off Sub-Saharan Africa, will continue to envelop ...

As a day progresses the air near the water’s surface can warm some and the inversion erodes. The smoke will lift and ...

Canada is having another bad wildfire season, and more than 27,000 people in three provinces have been forced to evacuate.

Wisconsin has been dealing with thick wildfire smoke aloft from Canada during the end of May and early June. As south-central ...

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...