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

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia as well as other parts of Europe ...

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

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

Smoke from Canadian wildfires worsened air quality in the eastern U.S. on Wednesday as several Midwestern states battled ...