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

A smoke map from NOAA shows Colorado will be almost entirely covered with smoke on Thursday as wildfires burn thousands of ...

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

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

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

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

EDT on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight EDT for ...

An updated air quality alert was reported by the National Weather Service on Tuesday at 4:13 a.m. EDT in effect until ...

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

At 9:13 a.m. on Wednesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight ...

The National Weather Service reported an air quality alert at 3:46 p.m. on Tuesday in effect until Wednesday at 11:15 p.m.

The Minnesota Pollution Control Agency has issued an air quality alert for northwest, north-central, and northeast Minnesota ...