Chicago faces an extreme heat watch with temperatures expected to reach mid-90s and heat indexes up to 115 degrees.

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

Today is partly sunny and hot! Highs will be in the upper 80s and low 90s with the heat index pushing to around 100!

CHICAGO (WLS) -- An air quality alert was extended through Wednesday by the National Weather Service for the Chicago area.

Millions of Americans across nine states were urged to avoid driving and limit outdoor activities on Wednesday as air quality ...

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

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

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

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

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