Maps show the extent of the wildfires spreading across the Northwest Territories in Canada, with the capital of the province asking all its residents to evacuate. Yellowknife, a city on the Great ...

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 of July 30, there were 59 active wildfires in Canada. Wildfires are a natural part of Canada's boreal forests, but are becoming more frequent and intense due to rising global temperatures.

Smoke began traveling down to the U.S. on Sunday. As Canada continues to battle its worst wildfire season on record, toxic smoke has traveled south and is once again blanketing states across the U.S.

Canada wildfire smoke is impacting air quality across a dozen U.S. states, primarily in the Northeast and Great Lakes regions. Air quality is expected to remain poor through Wednesday, Aug. 6, with ...