Add Yahoo as a preferred source to see more of our stories on Google. Large wildfires in Canada continued to cause concerning air quality levels across parts of the United States and triggered ...

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.

Canadian wildfire smoke is impacting air quality across a dozen northeastern and midwestern U.S. states. Air quality is expected to remain poor in the Northeast through Tuesday, with some improvement ...

Smoke from wildfires in Canada continue to impact air quality in the northern United States, even in the New York City metro area and Hudson Valley. According to the National Weather Service, wildfire ...

Large wildfires in Canada continued to cause concerning air quality levels across parts of the United States and triggered multiple air quality alerts. Over 750 wildfires are burning throughout Canada ...