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

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

Meteorologist David Yeomans has the extended forecast.

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

An air quality alert in the Chicago area will stretch into a third day as pollutants continue to linger in the air at high ...

CHICAGO (WLS) -- An air quality alert was issued by the National Weather Service for the Chicago area. Chopper 7 captured as ...

As smoke from Canadian wildfires worsens air quality in Illinois, Dr. Brady Scott from Rush University explains how it ...

The alert comes as humidity is expected to increase Tuesday, with high temperatures in the mid 80s to low 90s, with heat indices reaching 100 by Wednesday.

The Indiana Department of Environmental Management said Northwest Indiana’s ozone levels are expected to be unhealthy for ...

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

Chicago's air quality alert continues due to Canadian wildfires, affecting sensitive groups and prompting health advisories.

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.