An intense summer heat wave that settled over the Southland this week is expected to continue keeping the San Diego area oppressively toasty.
The ongoing hot spell sent Friday afternoon thermometer readings soaring into the 80s and 90s along the coast and in the East County highlands, past the 100-degree mark in a number of inland-valley neighborhoods, and up to 116 in desert locales, according to meteorologists.
One community, Chula Vista, recorded a record high of 90 degrees, exceeding its prior July 22 milestone of 84, set in 1988.
A heat advisory issued by the National Weather Service for inland locales will be in effect until 8 p.m. Sunday.
Authorities advised the public to reduce the potential for serious temperature-related ailments by staying hydrated, avoiding unnecessary outdoor activity and checking on neighbors and relatives -- especially the elderly, people with health conditions and those who lack access to air conditioning.
Officials also warned against leaving children or pets in parked cars, which can quickly become oven-like death traps in high heat.
Slightly cooler weather is expected to arrive west of the mountains on Sunday, and will extend to all areas by Monday, according to the weather service.