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

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

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

On Friday, the Minnesota Pollution Control Agency extended the current air quality alert for all of Minnesota and Wisconsin ...

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

"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 ...

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

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

For a period of time this week, Chicago's air quality ranked as the worst air quality on planet earth. This was caused by smoke billowing south from ...

Saturday offers generous sunshine mixed with puffy fair weather clouds, comfortable temperatures and low humidity. An Air ...