An extreme heat warning will be in place until 9 p.m. Saturday for most of the area, including downtown Los Angeles. Valley and mountain areas could see highs reaching 110 degrees or more, according to the National Weather Service.

Southern California should prepare for "dangerously hot" temperatures through Saturday, but elevated heat will persist into early next week.

LADWP and Southern California Edison officials have been asking customers to conserve energy due to the strain on the system.