The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for ...

The alert comes as humidity is expected to increase Tuesday, with high temperatures in the mid 80s to low 90s, with heat ...

Air quality in the Chicago area ranked as “Unhealthy for sensitive groups” early Monday morning as Canadian wildfire smoke once again impacts parts of the Midwest, including Wisconsin and Minnesota.

Sensitive groups are advised to stay indoors and limit outdoor activities as pollution and ozone levels spike to unhealthy ...

An air quality alert was in effect for the Chicago area and northwest Indiana Tuesday as poor air quality from unhealthy, ...

Besides temperatures feeling in the high 90s, Chicago and surrounding areas are under an air quality alert until midnight, ...

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

Chicago’s air quality was ranked the worst in the United States on Thursday, ... 2025, as the skyline is obscured by air pollution from Canadian wildfires. (Eileen T. Meslar/Chicago Tribune) ...

CHICAGO - A clash of air masses on Wednesday will result in the threat of severe storms from Milwaukee and Chicago westward to Denver and the eastern Rockies. The Storm Prediction Center has placed ...

An Air Quality Alert has been issued through Tuesday for the Chicago area from wildfire smoke coming in from Canada.

Experts say rolling back power plant emissions will harm Chicago air quality 02:49. As the Environmental Protection Agency seeks to revoke a key rule setting limits on the amount of carbon dioxide ...