Heat Advisory Active For DMV Harold Fisher September 5, 2023 at 4:23 pm in In The News - Afternoon Headlines, NEWS Tweet (Washington, DC) — Record-setting temps are definitely possible for some spots across the DMV once again today. Dulles and BWI both set record highs on Monday of 99 degrees and forecasters say we’re in for much of the same today into Thursday. The National Weather Service says some parts of the National Capital Region may tickle the century mark this afternoon with the heat index soaring as high as 105. A Heat Advisory is in effect for much of the region from noon to 8:00 tonight. Tags: heat advisory, Heatwave, National weather service