The Soto Fire was reported around 7:48 p.m. near the area of Soto Avenue and Sedona Drive, according to CalFire. As of 10 p.m., the blaze has charred 25 acres.
Evacuation orders were issued for Camino Real and the cross streets Laurel Ridge Drive, Pebblewood Court, Cottontail Court, Black Hills Drive and Sundance Drive.
People living in the area say the fire spread quickly on the mountain side.
It's unknown what sparked the blaze, but a large portion of Southern California is under a red flag warning as Santa Ana winds return to the region.
A care and reception center is being established at Patriot High School, located at 4355 Camino Real in Jurupa Valley.