The Los Angeles County Medical Examiner's Office reported an additional fire-related death on Monday, bringing the total number of fatalities to 29.

The additional fatality was attributed to the Palisades Fire, bringing its total to 12 deaths, while 17 people died in the Eaton Fire in the Altadena area of LA County.

The Border 2 Fire near the San Diego-Mexico border has spread to more than 5,300 acres and is 10% contained.

The Chula Vista Elementary School District said it’s closing eight schools Friday due to safety and air quality concerns.

Pennsylvania is sending 40 firefighters to Los Angeles to help fight the multiple wildfires spreading across the region, Gov. Josh Shapiro said.

"My Administration is proud to support national wildfire response efforts with these brave and highly trained crews who are answering the call to protect lives and communities," Shapiro wrote on social media. "Pennsylvania stands ready to help any state facing these unprecedented challenges."

A red flag warning that’s been in effect across Southern California will expire at 10 a.m. local time.

The gusty winds -- which contribute to the spread of wildfires -- will decrease throughout the morning and then let up in the afternoon.

Conditions will improve this weekend.

Humidity will increase and rain will reach Southern California on Saturday. The scattered showers will linger through Sunday and Monday.

There are no major flooding risks and an only 5% to 10% chance of significant debris in burn scars from the fires.

-ABC News’ Dan Amarante

The rapidly spreading brush fire that ignited Wednesday near Castaic Lake grew to 10,176 acres by early Thursday, according to local officials.

Firefighters battling the blaze in the brush north of Santa Clarita and Valencia had it about 14% contained on Thursday morning, according to Angeles National Forest officials.

The fire, about 45 miles north of downtown Los Angeles, erupted around 11 a.m. on Wednesday, prompting mandatory evacuation orders and evacuation warnings for about 50,000 people, officials said.

As more than 4,000 firefighters responded to the scene, an air tanker and four helicopters attacked the blaze from the air, preventing it from jumping nearby Interstate 5, officials said.

The Hughes Fires is just the latest in a series of wildfires that have ravaged Los Angeles County, since Jan. 7. Strong Santa Ana winds, which are forecast to buffet the area through Friday, have fanned the fires, causing some to spread quickly.

Red flag fire warnings remain in place for Los Angeles County and much of Southern California.