From the National Weather Service :
Heat Advisories are in effect for the I-95 corridor & eastward, maximum heat index values will be from 100-105F. pic.twitter.com/BktI91O4fV
— NWS DC/Baltimore (@NWS_BaltWash) July 14, 2016
...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING. * HEAT INDEX VALUES...100 TO 105...THE HIGHEST VALUES WILL OCCUR IN THE MID TO LATE AFTERNOON. * IMPACTS...RISK OF HEAT-RELATED ILLNESS FOR THOSE WITHOUT AIR- CONDITIONING OR THOSE OUTDOORS FOR AN EXTENDED PERIOD. 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. 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. DO NOT LEAVE PETS IN VEHICLES TODAY - EVEN WITH THE WINDOWS OPEN.