Winds pushed the fire west into the mountains and canyons of Rancho Cucamonga.
About 300 firefighters are out on the lines battling the fire, and crews were waiting for sunrise to make air water drops.
Homes were not threatened by the wildfire, but a voluntary evacuation was in effect for homes near the Buddhist temple.
Although the cause of the fire has not been determiend, officials have said it does look suspicious in nature.
A red flag warning is in effect because of the strong Santa Ana winds.
As reported yesterday on Action News, Valley fire crews made the trip to southern California to be stand-by for any wildfires, so they're already in the southland to help fight this fire.
This is the five year anniversary of the Grand Prix fire, which burned nearly 60,000 acres and destroyed 135 houses in the same area. No one was killed in that fire, but it took about 2,000 firefighters to extinguish that massive blaze.
The Associated Press contributed to this story.