The mercury could climb into the triple digits Tuesday in the Inland Empire, with even hotter temperatures expected in the next few days.
A high pressure system moving in from Texas will bring a rise in temperatures through Wednesday in the Riverside metropolitan area and through Thursday in the Coachella Valley and the San Gorgonio Pass near Banning, according to the National Weather Service.
The NWS issued an excessive heat warning that will last from 11 a.m. Wednesday to 9 p.m. Thursday for those two desert areas.
A heat advisory will be in effect during that same time period for the Riverside metropolitan area.
Riverside could see highs of 102 degrees both days and the mercury in Palm Springs could rise to 113 on Wednesday and 115 on Thursday, forecasters said.
High temperatures Tuesday are expected to reach 99 degrees in Riverside, 110 in Palm Springs, 99 in the San Gorgonio Pass near Banning and 92 in Temecula.
Nighttime lows will remain in the low 80s through Friday in the Coachella Valley, meaning the minimal cooling at night could pose a health risk to those who don’t have access to air conditioning because the body needs time to cool down from the day’s heat, according to the NWS.
The combination of hot days and warm nights is expected to increase the threat of heat illness, and the NWS urged residents to drink plenty of fluids, stay out of the sun and check up on relatives and neighbors.
Cooling centers are open daily across the county, providing residents who do not live in climate-controlled environments a free, cool space to relax until the evening hours.
A complete list of cooling centers is available at www.capriverside.org/Portals/0/PDF/Cool/2019–Cool–Center–Directory–7–10 — 2019.pdf.