Fourth of July fireworks could prompt hazardous air quality across parts of Southern California this weekend, authorities ...

This updated asthma guideline establishes a consistent approach to improving asthma diagnosis and control in adults and ...

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

An air quality alert was reported by the NWS San Diego CA on Thursday at 2:47 p.m. in effect until Saturday at midnight. The ...

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

Adult asthma affects more than 25 million Americans, yet many sufferers unknowingly engage in daily practices that exacerbate ...

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.

On Wednesday at 2:12 p.m. an air quality alert was reported by the NWS San Diego CA in effect until Sunday at midnight. The ...

Air quality warnings spanning seven states on Tuesday are prompting advisories for millions of Americans to avoid outdoor ...

Los Angeles County is the focus of an air quality alert reported at 1:58 p.m. on Wednesday by the National Weather Service.

Phoenix skies were already hazy with dust from winds. The July 4 fireworks from the store could make it worse.

The Clark County Division of Air Quality issued a smoke advisory Monday in preparation for Fourth of July fireworks. The ...