The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

Several parts of southern California are currently under windblown dust and ash advisories as deadly wildfires continue to ...

As people return to the structures spared from Los Angeles wildfires, experts warn that they should be careful of the air ...

Los Angeles is now a week removed from the day that multiple devastating wildfires erupted to torch tens of thousands of ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the ...

Ash from the recent LA County fires and burn scars formed by other wildfires in the fall can be dispersed by strong winds.

I've lived in Oregon for a decade, meaning I've experienced multiple wildfire seasons. You learn quickly, in these conditions ...

Wildfire smoke causes particularly dangerous air quality, especially for sensitive groups including children and pregnant ...

Air quality is a big concern for everyone in Southern California, even for those who don't live near fire zones. Here are answers to some of your top questions.

The sub-committee of the Commission for Air Quality Management (CAQM) has determined to implement all measures outlined in ...

NCR, authorities have imposed Stage 4 restrictions under the Graded Response Action Plan (GRAP). The air quality index soared ...