LOS ANGELES — Massive wildfires burning in the Los Angeles area have filled the air with a thick cloud of smoke and ash, prompting air quality advisories across a vast stretch of Southern California.

High pressure is building from the north and that will help to tighten the pressure gradient over southern California, ...

Winds have begun shifting to the east, which drove the Eaton fire toward Arcadia and Monrovia early Wednesday morning. Smoke will more likely begin to blow into the eastern San Gabriel Valley, not as ...