Weather observations for the past three days for
Washington/Dulles International Airport, DC
Metric (Imperial)
Date Time (edt) 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.
18 12:52 Vrbl 9 16.09 Mostly Cloudy SCT038 BKN047 BKN070 BKN250 28.9 19.4 57% 30 76.45 1018.9
18 11:52 N 15 16.09 Mostly Cloudy BKN034 BKN047 BKN250 28.3 20.6 63% 30 76.48 1019.5
18 10:52 N 17 16.09 Mostly Cloudy SCT028 BKN036 BKN047 BKN250 27.2 20.6 67% 29 76.5 1019.8
18 08:52 NW 11 16.09 Partly Cloudy FEW020 FEW100 SCT250 25.6 22.2 82% 27 76.48 1019.3
18 07:52 Vrbl 9 14.48 Mostly Cloudy FEW050 FEW100 BKN250 22.8 21.1 90% 76.48 1019.2
18 06:52 Calm 14.48 Mostly Cloudy SCT050 SCT120 BKN250 22.2 21.1 94% 76.45 1019.0
18 05:52 S 6 11.27 A Few Clouds FEW100 22.8 22.2 96% 76.4 1018.3
18 04:52 S 6 11.27 A Few Clouds FEW100 22.8 22.2 96% 76.4 1018.3
18 03:52 S 7 11.27 Mostly Cloudy BKN100 22.8 22.2 96% 76.4 1018.2
18 02:52 S 6 11.27 Mostly Cloudy BKN100 22.8 22.2 96% 76.4 1018.3
18 01:52 S 7 11.27 Mostly Cloudy BKN100 BKN200 22.8 22.2 22.8 22.2 96% 76.4 1018.5
18 00:52 S 7 11.27 Mostly Cloudy BKN200 22.8 22.2 96% 76.43 1018.7
17 23:52 S 7 12.87 Mostly Cloudy BKN100 22.8 22.2 96% 76.48 1019.3
17 22:52 SW 9 16.09 Overcast FEW065 BKN075 BKN100 OVC250 22.8 22.2 96% 76.53 1019.9
17 21:52 Calm 14.48 Mostly Cloudy SCT065 BKN250 23 22 94% 76.53 0.0
17 20:52 Calm 16.09 Mostly Cloudy FEW065 SCT140 BKN190 BKN240 22.2 21.7 97% 76.53 1019.9
17 19:52 S 9 16.09 Mostly Cloudy FEW046 SCT060 BKN210 BKN250 22.8 21.7 28.3 22.8 94% 76.5 1019.7 0.36
17 18:52 S 11 16.09 Mostly Cloudy FEW044 SCT075 BKN140 BKN210 23.3 22.2 94% 76.53 1020.2
17 17:52 S 11 16.09 Mostly Cloudy FEW020 SCT044TCU BKN075 BKN190 BKN250 23.9 22.2 90% 23 76.56 1020.3
17 16:52 SW 7 16.09 Light Rain FEW020 SCT044 BKN070 BKN160 BKN250 24.4 23.3 94% 24 76.56 1020.3 0.03 0.36
17 15:52 S 6 16.09 Light Rain FEW020 FEW070 SCT110 BKN150 BKN200 BKN250 24.4 23.3 94% 24 76.58 1020.8
17 14:52 S 11 11.27 Light Rain FEW044 SCT070CB BKN120 BKN180 BKN250 24.4 23.3 94% 24 76.66 1021.7 0.33
17 13:52 NE 13 16.09 Thunderstorm FEW040 BKN060CB BKN110 BKN150 BKN250 28.3 21.7 30.6 21.1 67% 31 76.68 1022.2
17 12:52 Vrbl 9 16.09 Mostly Cloudy SCT060TCU SCT100 BKN150 BKN250 30 21.1 59% 33 76.68 1022.0
17 11:52 SE 9 16.09 Mostly Cloudy FEW080 FEW150 BKN250 28.3 21.1 65% 31 76.78 1023.3
17 10:52 SW 9 16.09 Partly Cloudy FEW080 FEW150 SCT250 26.7 20 67% 28 76.81 1023.9
17 08:52 S 9 16.09 Mostly Cloudy FEW070 FEW120 BKN250 22.8 18.9 79% 76.81 1023.8
17 07:52 SE 9 16.09 Mostly Cloudy FEW070 FEW120 BKN250 21.1 18.9 21.7 18.9 87% 76.84 1024.0
17 06:52 Calm 16.09 Mostly Cloudy FEW060 FEW120 BKN250 18.9 18.3 96% 76.81 1023.8
17 05:52 Calm 16.09 Partly Cloudy SCT055 20.6 18.3 87% 76.81 1023.7
17 04:52 Calm 16.09 Partly Cloudy SCT055 20.6 18.3 87% 76.81 1023.9
17 03:52 SE 7 16.09 Mostly Cloudy SCT055 BKN110 21.1 18.3 84% 76.81 1023.9
17 02:52 SE 9 16.09 Mostly Cloudy BKN055 21.1 18.9 87% 76.86 1024.3
17 01:52 SE 6 16.09 A Few Clouds FEW120 21.1 18.3 25.6 21.1 84% 76.86 1024.5
17 00:52 S 6 16.09 A Few Clouds FEW060 FEW120 21.7 18.3 81% 76.91 1025.0
16 23:52 SE 7 16.09 Partly Cloudy SCT120 22.2 18.3 79% 76.94 1025.3
16 22:52 S 6 16.09 Fair CLR 23.3 18.3 74% 76.96 1025.6
16 21:52 S 9 16.09 Fair CLR 23.9 18.9 74% 25 76.96 1025.6
16 20:52 S 9 16.09 A Few Clouds FEW100 FEW250 25 18.3 66% 26 76.96 1025.7
16 19:52 S 9 16.09 A Few Clouds FEW100 FEW250 25.6 18.9 29.4 25.6 67% 27 76.91 1025.0
16 18:52 S 11 16.09 Fair CLR 26.7 18.9 62% 28 76.91 1025.0
16 16:52 S 9 16.09 A Few Clouds FEW250 28.9 18.9 55% 30 76.94 1025.4
16 15:52 SW 17 16.09 A Few Clouds FEW250 28.9 18.3 53% 30 76.96 1025.7
16 14:52 S 9 16.09 A Few Clouds FEW250 28.9 18.3 53% 30 77.01 1026.5
16 13:52 Vrbl 6 16.09 A Few Clouds FEW250 27.8 17.8 27.8 17.8 55% 29 77.06 1027.2
16 12:52 S 13 16.09 A Few Clouds FEW250 26.7 17.2 56% 27 77.11 1027.7
16 11:52 S 11 16.09 A Few Clouds FEW250 25 16.7 60% 26 77.14 1028.1
16 10:52 SW 13 16.09 A Few Clouds FEW110 FEW250 23.9 16.1 62% 25 77.17 1028.7
16 09:52 SW 13 16.09 A Few Clouds FEW120 FEW250 21.7 16.1 71% 77.17 1028.6
16 08:52 S 9 16.09 A Few Clouds FEW120 FEW250 19.4 15 76% 77.14 1028.4
16 07:52 SW 7 16.09 A Few Clouds FEW250 17.8 15 17.8 14.4 84% 77.14 1028.2
16 06:52 S 9 16.09 Fair CLR 16.7 13.9 84% 77.09 1027.5
16 05:52 SE 9 16.09 Fair CLR 16.1 13.9 87% 77.06 1027.2
16 04:52 SE 6 16.09 Fair CLR 15 13.9 93% 77.04 1026.8
16 03:52 Calm 16.09 Fair CLR 15 13.9 93% 77.01 1026.6
16 02:52 Calm 16.09 Fair CLR 15.6 13.9 90% 77.01 1026.6
16 01:52 S 6 16.09 Fair CLR 16.1 13.9 20.6 15.6 87% 77.01 1026.4
16 00:52 S 7 16.09 Fair CLR 16.7 13.3 80% 77.04 1026.8
15 23:52 Calm 16.09 Fair CLR 17.8 13.3 75% 77.06 1027.2
15 22:52 S 7 16.09 Fair CLR 18.3 13.3 73% 77.06 1027.1
15 20:52 S 9 16.09 Fair CLR 20 12.2 61% 77.06 1027.1
15 19:52 SE 7 16.09 A Few Clouds FEW250 20.6 11.7 25 20.6 57% 77.01 1026.5
15 18:52 S 7 16.09 Fair CLR 22.2 11.7 52% 77.01 1026.4
15 17:52 Vrbl 6 16.09 Fair CLR 23.9 11.7 46% 25 77.01 1026.6
15 16:52 SE 13 16.09 A Few Clouds FEW250 24.4 11.7 45% 26 77.01 1026.5
15 15:52 S 9 16.09 A Few Clouds FEW250 25 11.7 43% 26 77.04 1026.8
Date Time (edt) 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)