Remember, drink lots of fluids, and don't leave anybody in the car! National Weather Service shouts:

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED AN EXCESSIVE HEAT WARNING FOR THE LOS ANGELES AND VENTURA COUNTY  MOUNTAINS. THIS WARNING IS IN EFFECT FROM 11 AM THIS MORNING TO 9  PM PDT FRIDAY. AN EXCESSIVE HEAT WATCH HAS ALSO BEEN ISSUED… AND IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING. * TEMPERATURE: HEAT INDEX READINGS…A MEASURE OF THE LEVEL OF DISCOMFORT CAUSED BY THE COMBINATION OF HEAT AND HUMIDITY… WILL RISE TO BETWEEN 100 AND 107 DEGREES IN THE LOWER MOUNTAIN ELEVATIONS BELOW 4000 FEET DURING THE LATE MORNING THROUGH EARLY EVENING HOURS EACH DAY. * IMPACTS: HEAT STROKE…HEAT EXHAUSTION…HEAT CRAMPS AND SUNBURN COULD BE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS… &&
Instruction:
AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT  TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF  FLUIDS… STAY IN AN AIR-CONDITIONED ROOM… STAY OUT OF THE SUN… AND CHECK UP ON RELATIVES AND NEIGHBORS. ALSO…NEVER EVER LEAVE  CHILDREN… THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES… EVEN FOR  A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN… TEMPERATURES CAN QUICKLY RISE TO LIFE THREATENING LEVELS. AN EXCESSIVE HEAT WATCH MEANS THAT A PROLONGED PERIOD OF HOT TEMPERATURES COULD BE EXPECTED. THE COMBINATION OF HOT  TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. DRINK PLENTY OF  FLUIDS… STAY IN AN AIR-CONDITIONED ROOM… STAY OUT OF THE SUN… AND CHECK UP ON RELATIVES AND NEIGHBORS. ALSO…NEVER EVER LEAVE  CHILDREN… THE ELDERLY OR PETS IN ENCLOSED AUTOMOBILES… EVEN FOR  A SHORT PERIOD OF TIME. EVEN IF THE WINDOWS ARE PARTIALLY OPEN… TEMPERATURES CAN QUICKLY RISE TO LIFE THREATENING LEVELS.