Air-quality officials are advising people in several Southern California cities to keep their doors and windows closed amid ...

With the first phase of the Atwater-Merced Expressway complete, setbacks have impacted its next phases leaving some uncertainty to the overall timeline, according to Merced County officials. The multi ...

A new report shows that some of the nation's most polluted cities are in Southern California, four of which call the Inland Empire home.

The Benicia City Council on Tuesday unanimously approved an ordinance to increase oversight of refineries and other “high ...

Poor indoor air quality can affect more than just our breathing. Experts say it can also affect our workouts and recovery.

As the fires burned in Los Angeles, scientists and local air regulators deployed monitors to measure the levels of heavy ...

California drivers may soon face higher prices at the pump after a Senate bill aimed at reversing a 65-cent gas tax increase ...

The president's environmental actions will significantly increase the cost of living for millions of people and bring about ...

Offset project developers are looking for solid ground. But questions remain about whether governments can provide that.

Read more on our AI policy here. The NWS Phoenix AZ reported an air quality alert at 4 p.m. on Saturday in effect until Monday at midnight. The alert is for Imperial County Southwest, Imperial ...

Thousands of firefighters battle Western wildfires as smoke puts millions under air quality alerts Cooler temperatures and increased humidity could help crews battle California's Park Fire ...

Recent studies show that upgrading HVAC systems and using HEPA filters to improve air quality in classrooms provide health ...