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

Poor air quality caused by ozone and other sources prompted the warnings across six states on Thursday and Friday.

If you have breathing problems, be sure to take it easy tomorrow or limit outdoor time. Air quality will be unhealthy for ...

EDT an air quality alert was reported by the National Weather Service in effect until Sunday at midnight EDT for Berrien ...

Smoke from the Madre Fire in San Luis Obispo County could potentially bring poor air quality to the High Desert over the July ...