More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts ...

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

An air quality map shows conditions improving in the U.S. Friday as smoke from the Canadian wildfires subsides.

As wildfire smoke prompts emergency evacuations across the country, travelling smoke has issued weather alerts in Ontario and Québec.

Smoke from Canadian wildfires continues to descend into the U.S., creating poor air quality that can cause health issues.

In the upper Midwest of the United States, Michigan, Wisconsin and Minnesota have issued air quality warnings as smoke from ...