For the first time in at least 20 years, Jefferson County was under a “Code Red” air quality alert Tuesday, according to the Jefferson County Department of Health.

The air quality in eastern Taiwan, which is not industrialized and separated from the west by a mountain chain, experienced good air quality throughout the day.

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 ...

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

"I’m always learning and growing, changing as I move through life, and having this outlet to express my own story," Wyckoff ...

Concerns have been brewing in recent days as word of large-scale layoffs at NOAA and its sister branch the National Weather ...

Several California Republicans represent towns that rely on Medicaid for health care coverage. Their recent budget-cutting ...

A new housing development with roughly 180 homes could replace the old Mercury Insurance buildings near the 57 freeway on ...

Several California Republicans represent communities that rely on Medicaid for health care coverage. Their recent budget-cutting votes angered some constituents.

Removing 76 gasoline ads 'would send the message that it's time to end our embrace of polluting fossil fuels,' Senate ...