"This virus continues to mutate and adapt, and we cannot let down our guard," said Santa Clara County health officer Sara Cody.
A state of emergency was declared in Fresno, where intensive care unit beds were reported to be running out across the California county.
The air quality is expected to remain "unhealthy" through Friday in the Northern Zone and Eastern Zone of the Bay Area.
Since the beginning of the year, more than 8,100 wildfires have been reported in California, which have burned a total of more than 3.7 million acres.
Orange skies over the Bay Area have lead to comparisons between the city of San Francisco and the dystopian world of "Blade Runner 2049."
"Blade Runner 2049" came out in 2017 and the long-awaited follow-up up to the 1982 sci-fi classic is noted for its visually stunning cinematography, in particular, distinctively orange and hazy scenes set in a desolate future Las Vegas.
The air quality in the Bay Area is expected to be at a moderate level from Thursday.
Vacaville faces very unhealthy levels of air pollution as wildfires burn across the region, producing heavy smoke.
Several fires are burning around the Greater Bay Area, causing "unhealthy" air quality.
Law enforcement received a tip-off regarding "an unlawful assembly" at the Church at around 12:24 p.m. local time on Sunday, April 12.
"We're going to look at all other options," Mayor Bill de Blasio said.
Shoppers across the country have reported empty shelves at various retailers which have run out of supplies including face masks, disinfectants, water and toilet paper.
Health officials in Texas and California are testing patients for the coronavirus, after people returned from Wuhan, China, with respiratory symptoms.
A judge ordered two homeless women who have been occupying a vacant house in Oakland, California to leave the premises within five days or be forced out by police.
Several fires are currently raging in various parts of the state.
The epicenter of last night's quake was felt 0.7 miles northwest of Pleasant Hill and three miles west of the Concord fault.
When confronted by investigators about her lack of a license, Kim Thien Le allegedly said, "Me and my son would be very grateful if you could just forget about this."
Troy Good, a San Jose resident, is paying the cats' rent after his daughter went to college.
The Bay Area has been shrouded in a polluted haze due to nearby wildfires.
The fire-gutted house is located in the affluent Willow Glen community in San Jose.
The Hayward fault has been dubbed a "tectonic time bomb."
The suspect was an acquaintance of the 14-year-old's family, police say.
Silicon Valley billionaire investor Tim Draper is funding a movement to do just that.
In 1970, the Bay Area and Southern California had equal per capita incomes, but today Bay Area incomes are one-third higher.
San Francisco is drenched, and social media is inundated with storm references.
Four homes destroyed, tens of thousands without power after quake rocks through the Bay Area