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 ...

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

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

STATEN ISLAND, N.Y. — The National Weather Service reported an updated air quality alert in effect until 11 p.m. tonight for ...

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

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

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

EDT the National Weather Service reported an air quality alert in effect until Saturday at midnight EDT for Berrien County.

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

The Michigan Department of Environment, Great Lakes and Energy issued an air quality advisory Friday night effective through ...