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

Fireworks are happening across the city again this year, which poses two issues–highly concentrated pollution, and uniquely ...

The Madre Fire, now the largest wildfire in California this year, expanded to 79,630 acres by Saturday, July 5, prompting ...

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

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

The South Coast Air Quality Management District has issued a smoke advisory in Riverside County as the Wolf and Mindy fires ...

The Los Padres National Forest, Cal Fire in San Luis Obispo, and Bureau of Land Management have been coordinating the ...

Air quality is uniquely terrible after all those official and illegal fireworks are detonated to celebrate Independence Day.

The Madre Fire in central California expanded to nearly 53,000 in one day, making it the largest wildfire this year in ...

Hundreds of firefighters are working to contain a fast-moving wildfire that erupted near California’s Central Coast on ...

Beneath layers of waste, landfills around the US have been reaching scorching temperatures, spewing toxic gases and geysers ...