Butte county has opened a number of shelters to accommodate people who have been uprooted by the blaze.
Officials have recovered the remains of five people from vehicles that were "overcome by" the raging fire in Butte County, the sheriff's department there announced on Friday morning.
The 20,000 acre (8,100 hectare) Camp Fire, which started on Thursday near Camp Creek, is being driven west by 35 miles per hour (56 kmh) winds, fire officials said.
Among the towns under evacuation orders is Thousand Oaks, where a gunman killed 12 people in a rampage on Wednesday.
"It's a very risky and very serious situation", Butte County Sheriff Kory Honea said.
The Ventura County Fire Department said the blaze had burned around 8,000 acres and evacuation orders were issued for some 88,000 homes in Ventura County and neighbouring Los Angeles County.
Meanwhile, PG&E's shares plunged more than 16 percent Friday - the biggest one-day drop for the utility's stock price since August 2002, CNBC reported.
On Thursday, acting California Gov. Gavin Newsom declared a state of emergency for the fire-stricken area in Northern California and requested a presidential disaster declaration, saying that risky weather conditions were expected to last several days.
Supreme Court ban on firecrackers goes up in smoke
The AQI rose from 281 at 7 pm to 291 an hour later and by 10 pm, it was 296, said the Central Pollution Control Board (CPCB). The Supreme Court had allowed bursting of firecrackers from 8 pm to 10 pm only on Diwali and other festivals.
"That fire from the second it started was off to the races", said Ken Pimlott, director of Cal Fire.
May said the low humidity and the dryness of trees and brush are among the reasons for the Camp Fire and also pose a potential danger in Berkeley.
Malibu has about 13,000 residents and lies along 21 miles (34 kilometers) of coast at the southern foot of the mountain range.
The blaze, known as the Woolsey Fire, is spreading south, has jumped a major highway and is now threatening coastal areas including parts of Malibu. "Just landed back home and had one hour to pack up and evacuate our home".
Residents raced to escape on roads that turned into tunnels of fire as thick smoke darkened the daytime sky on Thursday, wiping out what a Cal Fire official said was a couple of thousand structures.
"We had to drive through flames to make it out safely", she said. "I pray everyone is safe", she wrote.
All still wearing pajamas, the Barnett family had left their home in Thousand Oaks at 3:30 a.m. and grabbed breakfast at Denny's.
Typically, for Los Angeles at least, the serious headlines are interspersed with others reporting that the mansion from the television series The Bachelor is burning, or that the homes of former Olympian Caitlyn Jenner and pop icon Cher, are at risk.