An additional 12,807 people have tested positive for COVID-19 in California over the past 24 hours, the governor said. That's the highest number recorded in a single day since the pandemic began.
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Those 12,807 new cases came out of a pool of about 127,000 people tested, Newsom said. That's about a 10% positivity rate.
Over the past week, the positivity rate has averaged 7.6%.
Newsom's announcement comes as California has surpassed New York for the most coronavirus cases in the country, with more than 413,000 confirmed cases.
"We're a state the size of 21 states combined," said Newsom. "So it's not surprising now in some respects, as we began to reopen key sectors of our economy, people continue to mix and people continue to come in close contact with others that may have contracted this disease, that our numbers will start to go up in total."
New York still has more COVID-19 cases per capita, the governor emphasized.
"Nonetheless, it's a sober reminder of why we are taking things as seriously as we are. A sober reminder of why we put in that mask mandate here in the state of California, and a reminder of why we modified our opening."
WATCH LIST: Counties where COVID-19 is getting worse
Newsom also announced Butte County, which includes Chico, has been added to the state's watch list.
In his Monday press conference, the governor announced a change in the rules for hair salons and other beauty services in the state.
While hair salons, barbershops, nail salons, massage parlors and other beauty services have to close indoor operations in counties on the state's watch list, they're now allowed to move some services outdoors.
The guidelines for outdoor hair salons and barbershops include:
Nail salons can offer manicures and pedicures outside. Other services like massages, body waxing and threading are also now allowed outdoors. Electrolysis, tattooing and piercings are not allowed outside because they have to be done in an indoor controlled environment.
Personal care services have to follow the above guidelines, as well as:
As of Wednesday, 35 of California's 58 counties are on the COVID-19 watch list, the governor said. That represents more than 91% of the state's population.
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