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

Concern for poor air quality in the greater Chicago area remains as the Illinois EPA extends its alert until Thursday night.

Smoke from the Gifford Fire was hovering over parts of the county, resulting in sooty air quality and possible ash falling ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

States across the U.S. are feeling the impact of the Canadian wildfires as air quality takes a hit from the smoke, according ...

Red flag warnings remain in place for parts of Nevada, Utah, Colorado and Wyoming due to very dry conditions, low humidity ...

Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

Continuing smoke from the Canadian wildfires is causing the north country to be under an Air Quality Alert for the third ...

Residents of central Pennsylvania should prepare for hazy skies and reduced air quality today as wildfire smoke from Canada ...

An updated air quality alert was reported by the National Weather Service on Tuesday at 4:52 p.m. in effect until Thursday at ...

Another air quality alert is in effect Tuesday for NYC, western Long Island, the Hudson Valley, northwest New Jersey and ...

Freeway corridor near Santa Clarita, Western San Gabriel Mountains/Highway 14 Corridor and Eastern San Gabriel Mountains are ...