Produced primarily by the burning of fossil fuels, ammonium nitrate is a substantial portion of particulate pollution, a ...

According to a notice published by the NWS, the South Coast Air Quality Management District (AQMD) issued an air quality alert due to "harmful" levels of particle pollution from windblown dust in the ...

Los Angeles has long struggled with air pollution, and despite progress over the decades, smog is still a major issue in the ...

California has used federal waivers to help clean up its air quality for decades. The U.S. Senate will likely revoke that ...

Community groups are fighting an unusual Louisiana law that restricts how they use data from air-quality monitors, saying it ...

The GOP engineered a complicated maneuver to stop letting California set its own vehicle emissions standards. The ...

LOS ANGELES (KABC) -- Southern California is cooling down, just in time for Memorial Day weekend. Los Angeles and Orange counties Friday can expect a high of 78 degrees and a low of 58.

Trump Administration Halts Harvard’s Ability to Enroll International Students The move was a major escalation in the administration’s efforts to pressure the university to fall in line with ...

Thank you for reporting this station. We will review the data in question. You are about to report this weather station for bad data. Please select the information that is incorrect.

On days of heavy pollution in Sulphur, a southwest Louisiana town surrounded by more than 16 industrial plants, Cynthia ''Cindy'' Robertson once flew a red flag outside her home so her community knew ...