 From 15th through 17th Street to Northwest, that's because of the U.S. Secret Service. I'm Ken Berger, WTOP Traffic. Today's heat more bearable. We're not seeing the excessive humidity and dangerous heat. Today's temperatures will start out in the upper 60s to mid-70s. We'll top out in the upper 80s to lower 90s across the area. Skies will be partly sunny.