SAN DIEGO (FOX 5/KUSI) — An extreme heat warning took effect in the San Diego County deserts on Sunday at 10 a.m. and will last until 8 p.m. on Monday.
High temperatures in the deserts will reach between 104 and 109 degrees.
In the deserts, those highs are 10 to 20 degrees above average during the day and as much as 20 to 25 degrees above average overnight.
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Temperatures should peak on Monday, warming about 3 to 7 degrees compared to Sunday.
The extremely high heat index will increase the risk for heat illnesses, especially for elderly adults, children, and pets.
If you plan to spend time outside, drink plenty of water and wear light clothing.
If it gets too hot outside, cool off indoors before you notice some of the symptoms of heat exhaustion or heat stroke.
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