Experts say people should take precautions such as wearing an N95 mask while outdoors or heading inside and closing the windows.

There's a haze in the sky across a large portion of the Midwest. The smoke coming from more than 210 fires burning in Canada, ...

Friday's air quality is healthy for sensitive groups, such as people with heart and lung disease, older adults. Children ...

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.

The Michigan Air Quality Division said as smoke from Canadian wildfires continues to threaten the upper Midwest, "monitors in ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a ...

Canadian wildfire smoke continues to cause hazy conditions across the Granite State, and it's impacting air quality in many areas. The Department of Environmental Services has declared an air quality ...

The alert was issued by the National Weather Service early Thursday afternoon and will remain in effect until 10 p.m. As of 2:30 p.m., most of West Virginia and most of the Northeast had moderate air ...

Massive clouds of pollutants could collide in North Carolina this week and result in poor air quality conditions for millions ...

Chicago had the worst air quality overnight Wednesday into Thursday, the latest American city to feel the impact of wildfire ...

Due to the extended timeframe that smoke will linger near the surface, the National Weather Service has pushed the air ...