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

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

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

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

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 ...

While some organizations have published clear air quality thresholds or contingency protocols for wildfire smoke, FIFA's ...

Chicago’s heat streak continues with a possible round of late-day storms today, before a brief cooldown and then another warm-up next week.

Thirty years ago, a heat wave settled over northeast Illinois. By the time the heat relented, 739 people had died and the city was using refrigerated trucks as makeshift morgues.

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 ...

CHICAGO - Today is warm with an air quality alert in effect. Sensitive groups should take it easy again as we have elevated ozone levels close to the ground. Highs will be around 90 this afternoon.