Wildfire smoke worsens air quality. Wildfire smoke has been fouling U.S. air quality for several days, starting in states bordering Canada, including the Dakotas, Minnesota and other Midwestern ...

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Hundreds of wildfires are burning across the Western states, Alaska and Canada as fire season perks up amid a sprawling heat ...

Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

Considering wildfires, and prevailing winds blowing from Canada, are expected to become more frequent, the impact on crops ...

Smoke from Canadian wildfires again plagued portions of the northern United States on July 16, prompting air quality alerts from Illinois to Maine.

As hundreds of wildfires continue to burn in Canada, the smoke from the flames is bringing potentially dangerous air quality to parts of the United States. ABC News. Live. Video. Shows.

Six members of Congress from Wisconsin and Minnesota have asked Canada to say how it plans to tackle the blazes and reduce ...

Smoke from raging wildfires in Canada continues to bring potentially dangerous air quality conditions to parts of the northern United States, with hazy skies in the East.

Of the active fires, 74 are in Canada’s westernmost province, British Columbia, which is above the U.S. states of Washington and Montana. The western province of Alberta has the second-highest ...

Canada is currently being ravaged by wildfires, and that means that residents in the United States have been inundated by smoke once again. Already millions across Texas, Minnesota and Michigan ...

Six Republican members of Congress – four of them from Minnesota – have called on Canada to impose 'better forest management.