Weather observations for the past three days for
Washington/Dulles International Airport, DC
Metric (Imperial)
Date Time (est) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
21 18:52 S 13 16.09 Partly Cloudy FEW090 SCT200 3.9 -13.3 5.6 3.3 28% 1 76.71 1023.0
21 17:52 S 11 16.09 Partly Cloudy FEW090 SCT200 3.9 -13.9 26% 1 76.73 1023.5
21 16:52 S 17 16.09 Partly Cloudy FEW090 SCT200 5 -15 22% 2 76.78 1023.9
21 15:52 S 33 G 48 16.09 Partly Cloudy and Breezy SCT090 SCT200 5.6 -15.6 20% 1 76.78 1024.1
21 14:52 S 28 G 43 16.09 Partly Cloudy FEW080 SCT200 5.6 -16.1 19% 1 76.86 1025.1
21 13:52 S 26 G 50 16.09 A Few Clouds FEW250 4.4 -16.7 20% 0 76.91 1025.8
21 12:52 S 26 G 56 16.09 A Few Clouds FEW250 3.3 -17.2 3.3 -13.3 21% -1 76.99 1026.7
21 11:52 S 19 G 37 16.09 Fair CLR 1.1 -17.2 24% -3 77.29 1030.9
21 10:52 S 15 16.09 Fair CLR -1.1 -15 34% -5 77.39 1032.2
21 09:52 S 11 16.09 Fair CLR -3.9 -13.9 46% -8 77.52 1033.8
21 08:52 Calm 16.09 Fair CLR -6.7 -12.8 62% 77.52 1033.8
21 07:52 Calm 16.09 Fair CLR -11.7 -15.6 73% 77.5 1033.8
21 06:52 Calm 16.09 Fair CLR -12.8 -16.1 -11.1 -14.4 77% 77.5 1033.7
21 05:52 NW 7 16.09 Fair CLR -12.8 -16.1 77% -17 77.55 1034.3
21 04:52 SE 6 16.09 Fair CLR -12.8 -16.1 77% 77.5 1033.6
21 03:52 Calm 16.09 Fair CLR -12.8 -16.1 77% 77.52 1034.0
21 02:52 Calm 16.09 Fair CLR -12.2 -17.2 67% 77.55 1034.1
21 01:52 S 6 16.09 Fair CLR -11.7 -16.7 67% 77.52 1033.8
21 00:52 Calm 16.09 Fair CLR -11.7 -17.2 -4.4 -12.2 64% 77.5 1033.7
20 23:52 Calm 16.09 Fair CLR -10.6 -17.8 56% 77.52 1033.7
20 22:52 Calm 16.09 Fair CLR -9.4 -17.8 51% 77.52 1033.8
20 21:52 N 6 16.09 Fair CLR -6.7 -18.9 38% 77.47 1033.1
20 20:52 NW 6 16.09 Fair CLR -6.1 -19.4 34% 77.44 1032.7
20 19:52 NW 9 16.09 Fair CLR -5.6 -20 31% -9 77.44 1032.7
20 18:52 N 9 16.09 Fair CLR -4.4 -20 -0.6 -4.4 29% -8 77.37 1031.8
20 17:52 NW 17 16.09 A Few Clouds FEW200 -3.3 -20.6 25% -8 77.29 1030.7
20 16:52 W 15 16.09 Fair CLR -1.7 -21.1 21% -6 77.22 1030.0
20 15:52 W 13 16.09 Fair CLR -0.6 -21.7 19% -4 77.19 1029.5
20 14:52 W 17 16.09 Fair CLR -0.6 -21.1 20% -5 77.17 1029.0
20 13:52 W 19 G 30 16.09 Fair CLR -1.1 -21.1 20% -6 77.14 1028.6
20 12:52 W 17 G 33 16.09 Fair CLR -1.7 -20.6 -1.7 -8.9 22% -6 77.14 1028.8
20 11:52 W 15 G 30 16.09 Fair CLR -2.8 -20.6 24% -7 77.22 1029.7
20 10:52 W 20 G 31 16.09 Fair CLR -3.9 -20 28% -10 77.27 1030.5
20 09:52 NW 13 16.09 Fair CLR -5.6 -19.4 33% -10 77.27 1030.3
20 08:52 N 11 16.09 Fair CLR -6.7 -18.9 38% -11 77.19 1029.5
20 07:52 NW 11 16.09 Fair CLR -8.3 -19.4 41% -13 77.14 1028.9
20 06:52 NW 7 16.09 Fair CLR -8.3 -19.4 -3.9 -8.9 41% -12 77.11 1028.4
20 05:52 NW 11 16.09 Fair CLR -8.3 -18.9 43% -13 77.01 1027.1
20 04:52 NW 11 16.09 Fair CLR -7.8 -18.9 41% -12 76.94 1026.0
20 03:52 NW 17 16.09 Fair CLR -7.2 -18.3 41% -13 76.91 1025.6
20 02:52 NW 19 16.09 Fair CLR -6.1 -17.8 39% -12 76.89 1025.3
20 01:52 NW 20 G 35 16.09 A Few Clouds FEW200 -5 -16.7 40% -11 76.81 1024.3
20 00:52 NW 17 16.09 A Few Clouds FEW200 -3.9 -15 1.1 -3.9 42% -9 76.73 1023.4
19 23:52 NW 26 G 41 16.09 A Few Clouds FEW200 -2.2 -13.9 41% -8 76.68 1022.6
19 22:52 NW 19 G 35 16.09 Fair CLR -1.1 -12.8 41% -6 76.58 1021.2
19 21:52 NW 7 16.09 Partly Cloudy SCT200 -0.6 -13.3 38% -3 76.5 1020.1
19 20:52 NW 17 16.09 A Few Clouds FEW060 FEW180 0 -12.8 38% -4 76.43 1019.1
19 19:52 Calm 16.09 Fair CLR -0.6 -13.3 38% 76.4 1018.9
19 18:52 N 6 16.09 Fair CLR 1.1 -12.8 5.6 1.1 35% 76.33 1018.0
19 17:52 NW 13 16.09 A Few Clouds FEW060 2.2 -12.8 32% -1 76.25 1016.7
19 16:52 NW 17 16.09 A Few Clouds FEW060 4.4 -12.2 29% 1 76.17 1015.9
19 15:52 SW 13 16.09 A Few Clouds FEW060 5.6 -10 32% 3 76.12 1015.1
19 14:52 SW 11 16.09 A Few Clouds FEW060 5 -10 33% 3 76.1 1014.8
19 13:52 SW 15 16.09 A Few Clouds FEW055 4.4 -10 35% 1 76.07 1014.4
19 12:52 SW 19 16.09 A Few Clouds FEW055 3.9 -10 3.9 -7.2 36% 0 76.07 1014.6
19 11:52 W 17 16.09 A Few Clouds FEW050 FEW100 3.3 -10 37% -0 76.15 1015.3
19 10:52 SW 17 16.09 A Few Clouds FEW050 FEW100 2.2 -10 40% -2 76.2 1016.2
19 09:52 SW 19 16.09 A Few Clouds FEW080 -0.6 -8.9 54% -5 76.2 1016.2
19 08:52 S 11 16.09 A Few Clouds FEW050 -3.9 -8.9 69% -8 76.17 1015.8
19 07:52 S 13 16.09 Fair CLR -5.6 -9.4 75% -10 76.17 1015.9
19 06:52 S 11 16.09 Partly Cloudy SCT090 -7.2 -11.1 -6.1 -8.9 74% -12 76.15 1015.7
19 05:52 S 6 16.09 A Few Clouds FEW110 -7.8 -11.1 77% 76.12 1015.4
19 04:52 S 7 16.09 Fair CLR -6.7 -11.7 68% -10 76.1 1014.9
19 03:52 SW 9 16.09 Mostly Cloudy BKN120 -6.1 -10.6 71% -10 76.17 1015.6
19 02:52 Calm 16.09 Mostly Cloudy BKN120 -8.3 -11.7 77% 76.15 1015.7
19 01:52 Calm 16.09 Fair CLR -8.3 -11.7 77% 76.12 1015.3
19 00:52 Calm 16.09 Fair CLR -7.2 -11.7 -1.1 -7.8 71% 76.05 1014.3
18 23:52 W 6 16.09 Fair CLR -5.6 -12.8 57% 76.12 1015.2
18 22:52 NW 9 16.09 Fair CLR -3.9 -12.2 53% -7 76.12 1015.0
18 21:52 NW 11 16.09 Fair CLR -3.3 -11.1 55% -7 76.12 1015.0
18 20:52 NW 11 16.09 A Few Clouds FEW075 -4.4 -10 65% -8 76.12 1015.0
18 19:52 N 11 16.09 A Few Clouds FEW075 -2.2 -10.6 53% -6 76.07 1014.3
Date Time (est) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)