'Long Duration' Heat Wave To Bring Dangerously Hot Conditions To San Diego County

SAN DIEGO, CA — A "long duration" heat wave will bring dangerously hot conditions this week to San Diego County.

The National Weather Service issued an excessive heat warning for most of the region. The warning is in effect from 11 a.m. Friday to 9 p.m. Saturday for the mountains and valleys, and until 9 p.m. Tuesday, July 9, for the deserts.

Triple-digit temperatures between 116 to 122 degrees are expected in the deserts.

"This is long-duration heat wave with high temperatures of 115 or higher expected for more than one week," the NWS warned.

Temperatures are expected between 90 to 104 degrees in the mountains and between 98 to 108 degrees in the the inland valleys.

"Heat-related illnesses increase significantly during extreme heat events," the NWS said.

Forecasters reminded residents to drink plenty of fluids, stay in air-conditioned rooms, stay out of the sun, and check on relatives and neighbors. Weather officials advised people to wear lightweight and loose-fitting clothing, and limit strenuous activities to early morning or evening.

Young children and pets should never be left unattended in vehicles under any circumstances.

"Take action when you see symptoms of heat exhaustion and heat stroke," the NWS said.