Wildfire smoke from Canada is expected to move over the U.S., impacting air quality for millions of people on Friday and this weekend. Maps and satellite imagery show the large-scale impact of the ...

Since the weekend, several major fires have been raging across Canada’s central and western provinces. The smoke from those fires is now drifting south across the U.S. border and is significantly ...

As wildfires spread across Canada, air quality in the U.S. continues to be impacted, and people sensitive to air pollution could face "serious health effects," according to a government website that ...

Smoke from hundreds of wildfires in Canada has spread over 5,000 miles across the Atlantic over the last week — reaching as far as parts of Russia. Western Greenland and the Arctic Archipelago have ...