Thousands of residents in Southern California were under air quality alerts on Friday, with authorities warning those in ...

Officials have issued a Code Orange Air Quality Alert, meaning pollution levels have reached levels that could pose health risks, particularly for sensitive groups.

The South Coast Air Quality Management District (AQMD) released the third preliminary drafts of Proposed Amended Rules (PAR) 1111 and 1121, which aim to reduce nitrogen oxide (NOx) emissions by ...

Early Friday evening, air quality was moderate in most of Los Angeles and Orange County, with a small area where the air is unhealthy for sensitive groups. And while much of the Inland Empire has ...

"Air quality can vary by hour and location depending on wind conditions," said an air pollution control agency.