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 ...

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 ...

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 ...

The sternly worded statements and letters are filled with indignation and outrage: Republican U.S. lawmakers say Canada has done too little to contain wildfires and smoke that have fouled the air in ...