An excessive heat warning has been issued for parts of Riverside County from 11 a.m. Thursday until 8 p.m. Friday, according to the National Weather Service.
Dangerously hot conditions with temperatures up to 118 are expected in the Coachella Valley, Indio, Palm Springs, Cathedral City, Palm Desert and La Quinta.
Temperatures up to 112 are expected in the San Gorgonio Pass near Banning and Desert Hot Springs.
The NWS warns extreme heat can significantly increase the potential for heat-related illness, particularly for those working or participating in outdoor activities.
Overnight temperatures will be above normal and warm with temperatures expected to be in the mid 80s to lower 90s. Friday is expected to be the hottest day, with temperatures on Saturday beginning to drop. Monsoonal moisture and conditions are expected to increase on Saturday.
The NWS recommends drinking plenty of fluids, staying in air conditioned areas, and staying out of the sun.