The 'unhealthy for sensitive groups' air quality in Chicago comes as an air quality alert was issued for the entire state of ...

Air quality in the Chicago area has remained poor for three days in a row, the NBC 5 Storm Team reported Wednesday morning.

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

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

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

Chicago faces poor air quality and sweltering heat today and tomorrow, followed by scattered storms heading into the weekend.

CHICAGO - Today is warm with an air quality alert in effect. Sensitive groups should take it easy again as we have elevated ...

The National Weather Service has issued an air quality alert for parts of the Midwest including the Chicago area as unhealthy smoke from Canadian wildfires continues to move south. The alert, issued ...

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

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

The AQI in hazy Chicago reached 250 on Tuesday afternoon. Any number over 100 is considered unhealthy for sensitive groups. Haze obscures the Chicago skyline, June 27, 2023.

The reported issues came just as Chicago’s air quality was ranked among the worst in the U.S. According to the 2025 State of the Air Report, released by the American Lung Association on ...