Smoke from Canadian wildfires continues to choke the skies over the Upper Midwest this weekend, with the milky haze even ...

National Weather Service officials issued an air quality alert set to expire at midnight Saturday for the Chicago and ...

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

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

National Weather Service officials called an air quality alert in effect until midnight as well as a beach hazard warning.

Wildfire smoke has pushed Chicago's air quality into the "unhealthy" zone. It's so bad, in fact, that we're the most polluted ...

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

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

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

While the haze slightly lifted Saturday morning, air quality levels are expected to worsen across the Chicago area over the ...

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