Smoke from ongoing wildfires across Canada continued to drift into parts of the United States on Wednesday, causing hazy ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.  Air ...

Poor air quality from the Canadian wildfires remains a concern Tuesday for much of the Upper Midwest and the Northeast ...

People may experience difficulty breathing and throat irritation as Canadian wildfire smoke causes air quality to deteriorate ...

The smoky air is predicted to reach New York City on Monday, and it could bring unhealthy air quality for sensitive groups.

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast into Tuesday.

The thick plumes of smoke in Canada are being driven southward into the U.S. by northerly winds on the backside of an area of high pressure.

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring ...

Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.

Smoke and grit from hundreds of forest fires have spread across large parts of Canada and the northern US, sending air quality across the Midwest and northeast US and Toronto to unhealthy levels.