Severe storms threaten Chicago, Milwaukee, and Denver on Wednesday as a clash of air masses brings the risk of damaging winds, hail, flash flooding, and even isolated tornadoes. The wet weather is ...

CHICAGO (WLS) -- There is a chance of severe weather Wednesday afternoon. Wednesday will be very hot and humid, with highs in the low 90s. Between about 3 and 8 p.m., strong to severe storms are ...

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

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 ...

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

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

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