The National Weather Service has issued both a heat and air quality alert for most of downstate New York, Wednesday, July 16.

The Cram fire is the largest in the state, expanding overnight to more than 64,000 acres, according to the Northwest ...

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

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

An air quality alert was issued by the National Weather Service in Milwaukee-Sullivan at 9:26 a.m. on Wednesday, July 16.

The Mid-Ohio Regional Planning Commission issued an air quality alert July 15, 2025, for central Ohio, including Columbus, ...

Besides temperatures feeling in the high 90s, Chicago and surrounding areas are under an air quality alert until midnight, ...

An air quality alert for northwest Minnesota has been extended to cover the entire state and run through Monday.

Additional plumes of smoke from Canada's active wildfires prompt officials to issue a statewide air quality alert on July 14.

Wildfire season is upon us once again, and smoke is reducing air quality through swaths of the country. Environment Canada ...

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