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

Air quality in states north of Tennessee has been reduced by smoke from Canadian wildfires, but how will those wildfires ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

Air quality alerts have been issued across 12 states for Wednesday, according to the National Weather Service.

Wildfire smoke is back again in much of Wisconsin this morning. Air quality has fallen to the unhealthy for sensitive groups ...

Air quality is expected to reach the orange AQI category in northeast Minnesota, which is unhealthy for sensitive groups.

As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts across the U.S.

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...