WASHINGTON NATIONAL AIRPORT , VA, United States (KDCA) 38-51N 077-02W 18M Feb 13, 2012 - 02:52 PM EST / 2012.02.13 1952 UTC Wind: from the WSW (250 degrees) at 8 MPH (7 KT):0 Visibility: 10 mile(s):0 Sky conditions: mostly clear Temperature: 48.9 F (9.4 C) Dew Point: 12.0 F (-11.1 C) Relative Humidity: 22% Pressure (altimeter): 30.1 in. Hg (1019 hPa) ob: KDCA 131952Z 25007KT 10SM FEW250 09/M11 A3010 RMK AO2 SLP192 T00941111 cycle: 20