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 ...

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 ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada continues to waft into the United States, creating hazy, gray skies over major ...

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, blanketing the skies in haze and lowering air quality across roughly a dozen states from Wisconsin ...

Hazy skies hung over parts of the midwest and northeastern U.S. on Sunday, caused by smoke drifting across the border from hundreds of wildfires in Canada. Canada is experiencing its second worst ...

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 ...

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.

Minnesota and Canada share so much: frigid winters, a love for hockey — and more recently, massive plumes of toxic wildfire smoke sending people indoors in the peak of summer. It’s that latter ...

Medium to heavy smoke should continue around the country on Wednesday as well. Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

Canadian wildfires are causing poor air quality across the northern United States. Air quality in the Northeast is expected to worsen before improving later in the week. Hundreds of wildfires remain ...