Freeway north of LA is under an air quality alert which was reported by the National Weather Service on Thursday at 2:43 p.m.

The Orange County and Santa Ana Mountains area is under an air quality alert which was reported by the National Weather ...

The Michigan Department of Environment, Great Lakes, and Energy has declared an air quality alert for Friday. There are ...

The Southwest Ohio Air Quality Agency reports that "levels of ozone within the region may approach or exceed unhealthy ...

On Saturday at 3:45 p.m. an air quality alert was reported by the National Weather Service in effect until Monday at midnight ...

EDT an air quality alert was reported by the National Weather Service in effect until Sunday at 12:15 a.m. EDT for St. Clair, ...

EDT the National Weather Service reported an air quality alert in effect until Sunday at midnight EDT for Muskegon, Ottawa, ...

An updated air quality alert was reported by the National Weather Service on Sunday at 2:25 p.m. in effect until 11 p.m. for ...

After a few days of jubilant fireworks launching, Columbus' air quality is taking a hit, causing the Mid-Ohio Planning ...

An air quality alert was issued Thursday by the National Weather Service for the entire Chicago area through Friday night.

An air quality alert has been issued for most of Southeast Michigan on Independence Day. The alert is in effect for most ...

A regional air quality alert was issued for much of Southern California as harmful levels of fine particle pollution spread ...