Illinois residents were introduced to hazy, smoke-filled air from the Canadian wildfires Tuesday, but the poor air quality continues to plague the northern United States.

Illinois air quality today The Illinois Environmental Protection Agency has called for an Air Quality Action Day through midnight Friday due to high levels of Fine Particles PM 2.5 in the air.

“As Illinois continues to face challenges with poor and dangerous air quality, it is important for residents to be better aware of the air quality forecasts in their community and take the ...

The poor air quality for Illinois and parts of Indiana is expected to last at least until midnight, and could last into Friday By NBC 5 Storm Team • Published June 5, 2025 • Updated on June 5 ...

Editor's Note: The air quality alert has been extended in Thursday. Our original story continues below. As of 5:30 a.m. Wednesday, much of Chicago's air quality remains "Very Unhealthy"," -- level ...

Moderate (51 to 100): Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

CHAMPAIGN, Ill. (WCIA) – Air quality across the state has been impacted on Friday due to wildfire smoke. The smoke originates from fires that continue to burn out of control in Alberta. The ...

That’s according to IQAir’s Air Quality and Pollution City Ranking, which is updated hourly, the air pollution advocacy organization explains. As of Tuesday, Chicago was ranked the worst in ...

Poor air quality is expected to continue Wednesday in parts of the Midwest, Great Lakes and Upper Mississippi Valley thanks to the Canadian wildfires, according to the National Weather Service. As ...

Three U.S. cities ranked among the top 10 for worst air quality in the world Tuesday morning as smoke from Canada fires hit Chicago and the Midwest.