It’s already a sweltering summer day and it’s only going to get worse.
Arlington County and much of the rest of the D.C. area is under a Heat Advisory through Thursday evening, as the heat index is expected to climb well over 100.
More from the National Weather Service:
… HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING… * HEAT INDEX VALUES… UP TO 107 DUE TO TEMPERATURES IN THE MID 90S, AND DEWPOINTS AROUND 70. * IMPACTS… THE HEAT AND HUMIDITY MAY CAUSE HEAT STRESS DURING OUTDOOR EXERTION OR EXTENDED EXPOSURE. PRECAUTIONARY/PREPAREDNESS ACTIONS… A HEAT ADVISORY MEANS THAT A PERIOD OF HIGH TEMPERATURES IS EXPECTED. THE COMBINATION OF HIGH TEMPERATURES AND HIGH HUMIDITY WILL CREATE A SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE, RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY – CALL 911. &&
Heat Advisory expanded to include much of the area (incl. DC/Balt) for heat indices near 105F today. See graphic for tips to beat the heat! pic.twitter.com/54jZ0I2UNs
— NWS DC/Baltimore (@NWS_BaltWash) July 20, 2017