Air quality alerts have been issued across most of the Midwest, and hundreds of wildfires are burning across Canada.

Wildfire smoke from Canada is blanketing the skies in the Midwest, leaving millions with dangerous breathing conditions.

The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

CHICAGO (WLS) -- Most of the Chicago area remains under an Air Quality Alert on Saturday due to smoke from Canadian wildfires ...

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian ...

Wildfire smoke from Canada turned Chicago into one of the world’s most polluted metro areas as the Lollapalooza music ...

CHICAGO (WLS) -- Air Quality Alerts remain in effect for the Chicago area Friday due to smoke from Canadian wildfires.

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the Midwest and worsening air quality, ...

Heavy storms in the Carolinas brought between 1 to 4 inches of rain and prompted several flash flood warnings on Friday.

The smoke is expected to remain over the northern and central Plains of the United States for the next couple of days, ...

Smoke from Canadian wildfires settled over Chicago Thursday, with air quality reaching “unhealthy” levels for everyone. Air ...

Friday morning, Chicago's air quality showed a PM 2.5 of 157. Typically, anything above 100 is considered to be hazardous to at least some groups, and anything over 150 is considered to be “unhealthy, ...