In the forecast for Thursday are highs of 80 to 85 degrees at the beaches, 90 to 95 degrees in inland coastal areas, 92 to 97 degrees in the western valleys, 96 to 101 degrees near the foothills, 93 to 100 degrees in the mountains and 111 to 116 degrees in the deserts.
A National Weather Service heat advisory for the valleys, mountains and deserts goes into effect at noon Thursday and is expected to last until 8 p.m. Sunday.
“High pressure will strengthen over Southern California allowing for a summertime heat wave to bake inland locales through the end of the week,'' according to the weather service.
San Diegans were advised to avoid potentially serious heat-related ailments by staying well-hydrated, avoiding unnecessary outdoor labor and wearing lightweight, loose clothing.
To help prevent heat-related illness:
- Spend time in locations with air-conditioning when possible.
- Drink plenty of fluids. Good choices are water and diluted sport electrolyte drinks (1 part sport drink to 2 parts water) unless told otherwise by a doctor.
- Choose lightweight, light-colored, loose-fitting clothing
- Limit outdoor activity to morning and evening hours