San Diego County is in the grip of heat wave that's expected to last all week, forecasters said.
A heat advisory remains in effect for inland areas through 10 a.m. Tuesday, and will be followed by an extreme heat watch through at least 8 p.m. Friday for the entire region, according to the National Weather Service.
Widespread moderate to locally major heat risk is expected for the coast, valleys and mountains except near the beaches and for the higher elevations in the mountains, with major to extreme heat risk for the lower deserts.
Temperatures are on track to peak Tuesday through Thursday, generally 8 to 12 degrees above average, according to forecasters.
Downtown San Diego reached 86 degrees on Sunday, and was expected to climb to 88 by Thursday. In the county's desert area, Borrego Springs reached 112 on Sunday, and could hit 114 by Wednesday, according to the NWS.
Inland highs will range from 95 to 107 degrees this week, with nighttime lows only dropping to the mid-70s.
The low deserts are consistently expected to see highs of 110-115 Tuesday through Friday along with major to extreme heat risk, the NWS said.
While highs in coastal areas will mainly remain below 90 degrees, overnight temperatures will not drop below the lower 70s, which will especially affect those without access to air conditioning.
Above-average high and low temperatures will continue through next week, according to the NWS.
Health officials advised people to drink plenty of fluids, stay out of the sun during the hottest parts of the day and check up on relatives and neighbors. The public was also urged to never leave children or pets in parked vehicles for even a minute, as temperatures inside vehicles can reach deadly levels in virtually no time.
