Fair and 80 F at Key West International Airport, FL Posted Tuesday, December 5th, 2023 1:06pm Winds are from the North at 10.4 gusting to 20.7 MPH (9 gusting to 18 KT). The pressure is 1017.9 mb and the humidity is 52%. The heat index is 81. Last Updated on Dec 5 2023, 1:53 pm EST.