 T-O-P traffic. Mild and muggy start to your day with temperatures only in the mid-70s this Sunday morning. Now as we head towards this afternoon, another very hot day in store with highs in the mid to upper 90s with heat index values closer to 100 degrees. Also tracking the chance of a few stray showers that will fizzle out by the time the sun sets. I'm 70s meteorologist Mark Pena in the First Alert Weather Center. Around the area we're looking at temperatures in the 70s, low 80s, 74 resting, 76 in Bethesda, 80 on the National Mall on WTOP.