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.

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.

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

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

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 ...

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

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

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