Active AlertsSan Bernardino County Mountains

What: Temperatures in the mid to upper 90s below 5000 ft MSL.
Where: San Bernardino County Mountains.
When: For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening.
Impacts: Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.