The Eaton Fire east of Los Angeles has scorched 14,117 acres (57 sq km), or 22 square miles, but firefighters increased the containment to 33%.
North of the city, the Hurst Fire was 89% contained, and three other fires were now 100% contained, the California Department of Forestry and Fire Protection (Cal Fire) reported.
Angelenos, even far from the fires, were urged to wear N95 masks when outside due to the smoke.
Authorities have arrested dozens of people for violating curfews and evacuation orders, for burglary and shoplifting, for flying unauthorized drones and in at least one case for impersonating a firefighter, officials said.
The Oscar nominations were postponed for a second time and will now be announced on Jan. 23, six days later than originally scheduled, the Academy of Motion Picture Arts & Sciences said. The Dolby Theater, where the awards will be presented on March 2, was temporarily within an evacuation zone last week.
President Joe Biden, who will hold another briefing on Monday afternoon on the federal response to the fires, issued a statement expressing sympathy for the victims.
"I am being frequently briefed on intensive efforts to suppress the wildfires across Los Angeles, and have directed our team to respond promptly to any request for additional federal firefighting assistance," he added.
CITY ON ALERT
In anticipation of high winds returning on Monday, officials have warned the entire Los Angeles County population of nearly 10 million to be ready to evacuate.
As of Monday morning, more than 92,000 people in Los Angeles County were under an order to evacuate - down from a previous high of more than 150,000 - while another 89,000 faced evacuation warnings.
At a Pasadena town hall on Sunday, state and local officials told residents it still wasn't safe to return to their fire-damaged homes, even as containment of the fire improves.
In addition to lingering hot spots, downed power lines and contaminated water supplies, officials warned residents that clearing ash and other household debris could expose them to hazardous materials such as lead, arsenic and asbestos.
FEMA Administrator Deanne Criswell told MSNBC on Monday that residents out of harm's way can begin applying for federal assistance.
Firefighters from seven states, Canada and Mexico have converged on the Los Angeles area.
The Rose Bowl stadium in Pasadena has been transformed into a base camp for fire trucks and firefighters from all over California and the West to fight the nearby Eaton fire.
In Altadena on the edge of the Eaton Fire, Tristin Perez said he never left his home, defying police orders to evacuate as the fire raced down the hillside.
Instead, Perez insisted on trying to save his property and his neighbors' homes.
"Your front yard is on fire, palm trees lit up – it looked like something out of a movie," Perez told Reuters in an interview in his driveway. "I did everything I could to stop the line and save my house, help save their houses."
Reporting by Nathan Frandino and Lisa Baertlein in Los Angeles; Additional reporting by Jonathan Allen, Brendan O'Brien, Mary Milliken, Lisa Richwine and Chad Terhune; Writing by Daniel Trotta and Joseph Ax; Editing by Frank McGurty and Nick Zieminski