Mostly Cloudy and 84 F at Key West International Airport, FL Posted Sunday, May 5th, 2024 11:02am Winds are from the East at 19.6 gusting to 31.1 MPH (17 gusting to 27 KT). The pressure is 1017.1 mb and the humidity is 70%. The heat index is 90. Last Updated on May 5 2024, 11:53 am EDT.