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

Millions of people across the Upper Midwest and the Northeast are under air quality alerts Monday, as smoke from wildfires in ...

Wildfire smoke turned dense late Sunday and it will remain that way today with an Air Quality Alert issued for a second day ...

With smokey conditions likely worsening throughout Aug. 3, an air quality advisory was extended to noon Aug. 4.

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

The Pennsylvania Department of Environmental Protection declared a continuation of its “Code Orange” Air Quality Action Day ...

An air quality alert covering the entire state of Minnesota continues on Thursday, marring otherwise fairly ideal weather ...

The Wisconsin Department of Natural Resources re-extended its air quality alert statewide as wildfire smoke lingers.

Beginning Sunday and continuing into Monday, air quality across Western New York has significantly deteriorated. The main ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air for at ...

An air quality alert went into effect for the metropolitan area went out Monday at midnight and continues until midnight ...

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to ...