The warning, which began Wednesday, was expected to be lifted at 8 p.m. A combination of high heat, low humidity and strong winds create a high risk of wildfire.
On Wednesday, the Los Angeles Fire Department placed "red flag parking restrictions," which banned parking on streets that fire trucks would have a tough time navigating. Those restrictions were expected to be lifted by 8 a.m. Thursday.
Santa Ana winds pushed gusts between 45 and 60 miles per hour across coastal and valley areas. In some places, winds reached as high as 84 miles per hour.
"My back fence is totally completely ripped off. Luckily my dogs are very trained and they stayed in," Ontario resident Claudia Aguirre said.
Schools in the San Jacinto Unified School District in Riverside County were closed all day because of high winds, according to the district's website.
Temperatures were expected in the high-90s for Los Angeles and Orange counties. Valley and Inland Empire temperatures may hit triple digits. Some cities, including Glendale and Redlands, offered cooling centers to help residents escape the heat.
City News Service contributed to this report.