 Guarantee. I have a good feeling that we'll see another heat advisory for at least parts of the area, 94 to 99 degrees. And then Wednesday, temperatures still in the 90s with 80s by Friday. It's only going to last, though, one day. At this hour, temperature-wise, it is uncomfortable with heat index values in the upper 80s to middle 90s. Actual air temperature is 84 in Fairfax, 87 in College Park, and 86 degrees downtown.