About half of the available free air filtration devices are still available to southern San Diego County residents exposed to odors.

An air quality advisory that was set to last through Monday has been lifted, air district officials said. Over the weekend, ...

Los Angeles County is included in an air quality alert reported by the National Weather Service on Thursday at 2:43 p.m. The alert is in effect until Saturday July 5, at 11 p.m.

A coalition has begun an effort to bring back Tulare Lake and its once-vast wetlands on thousands of acres of farmland in the San Joaquin Valley.

A coalition has begun an effort to bring back Tulare Lake and its once-vast wetlands on thousands of acres of farmland in the San Joaquin Valley.

Los Angeles County is the focus of an air quality alert reported at 1:58 p.m. on Wednesday by the National Weather Service. The alert is in effect until Saturday July 5, at 11 p.m.

Canadian researchers find that fine particle pollution (PM2.5) can cause hidden heart damage, challenging current air quality standards.

The San Joaquin Valley Air Pollution Control District issued a public warning on Tuesday calling on residents to limit their use of personal fireworks throughout the holiday week.

Higher long-term exposure to fine particulate air pollution was linked with higher levels of myocardial fibrosis in both the patients with cardiomyopathy and the controls, suggesting that ...

The Valley Air District is urging residents to limit using personal fireworks this Fourth of July due to their harmful impact on air quality and public health.