Much of California will sizzle this weekend as temperatures continue to rise to 100 degrees or higher in many locations. Temperatures hit 118 at Thermal and 116 at Palm Springs on Thursday. The hot air and dry brush also brought heightened wildfire risks throughout the region. Los Angeles County opened 42 daytime cooling centers for seniors and suggested people visit air-conditioned malls and libraries in the evenings. The National Weather Service warned people to take precautions for heat that could quickly kill children or animals left in cars. Energy use in Los Angeles peaked at 5,854 megawatts Thursday, breaking records for the month of June.