Winds have blown clouds of ash and dust from the vast area of Southern California's San Gabriel Mountains that burned in a summer wildfire.
A brown stain marred the sky Sunday over foothill suburbs northeast of Los Angeles.
Some 250 square miles of the Angeles National Forest went up in smoke after the so-called Station Fire erupted in August.
Gusty winds developed behind a chilly storm system that moved through the region on Saturday.
The National Weather Service says high pressure building over the Great Basin is setting the stage for a weak to moderate Santa Ana wind event.