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

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

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

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

Chicago had the worst air quality in the world on Thursday. There is an Air Quality Alert for most of the area through Friday ...

Smoke from the more than 700 wildfires burning in Canada is continuing to blanket parts of the Midwest for a final day.

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

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

The Chicago area has experienced several days of pleasant temperatures, but the mercury will be trending upward again in ...

Smoke has continued to cloud Illinois' air for a second straight day, but the poor air quality isn't because of a fire in the ...

While we’ll see plenty of sunshine and beautiful temperatures on Sunday, a layer of haze will linger across Chicagoland as an ...