 See terms at discover.com slash credit card. Steve Dresner, WTOP Traffic. 2-7 News First Alert Meteorologist Steve Rudin. Hot and humid conditions moving through the remainder of the morning and into the afternoon and evening. A heat advisory until 8 o'clock for the metro area south to Fredericksburg. Heat index values anywhere between 100 and 110 degrees. Go further east closer toward the Chesapeake Bay.