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 much to the south of the fire, Lyou explained. “Arcadia, Duarte and Azusa may see elevated levels (of bad air) from that fire,” he said.

Southern California air quality monitors issued a dust and ash alert for all of Los Angeles County as strong Santa Ana winds blow through the Eaton and Palisades burn scars.​

On Friday at 2:11 p.m. an air quality alert was issued valid until Saturday at 5 p.m. The alert is for Calabasas and Agoura Hills, Catalina and Santa Barbara Islands, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational area,