 which heat is the number one weather-related killer in the United States every year. So take the heat precaution seriously. Water, shade, sunscreen limits your time outside. Air temperature forecast of 97 today, 100 tomorrow, and 101 for your Tuesday. I'm 7 News meteorologist Rory Devins in the Furschler Weather Center. It's 93 in Gaithersburg, 93 in Arlington, 94 in Lanham at 140.