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.
11 17:52 S 28 G 48 16.09 Mostly Cloudy FEW050CB SCT100 BKN250 29.4 14.4 40% 29 75.41 1005.2
11 16:52 S 30 G 48 16.09 Mostly Cloudy FEW050 SCT110 BKN250 29.4 15 42% 29 75.46 1005.7
11 15:52 S 24 G 39 16.09 Mostly Cloudy SCT050 BKN120 BKN250 29.4 15 42% 29 75.54 1006.6
11 14:52 S 13 G 33 16.09 Mostly Cloudy FEW050 BKN120 BKN250 26.7 15 49% 27 75.64 1008.0
11 13:52 SW 17 G 30 16.09 Mostly Cloudy SCT110 BKN150 BKN220 26.1 14.4 26.1 15.6 49% 27 75.77 1009.8
11 12:52 S 13 16.09 Overcast SCT085 BKN120 OVC180 23.3 14.4 57% 75.84 1011.0
11 11:52 S 15 16.09 Overcast SCT110 OVC170 22.8 13.9 57% 75.92 1011.8
11 10:52 S 13 16.09 Overcast BKN100 OVC170 20.6 13.3 63% 75.97 1012.5
11 09:52 S 17 16.09 Overcast BKN150 OVC220 19.4 12.8 66% 76 1013.0
11 08:52 S 11 16.09 Overcast BKN150 OVC250 18.9 12.2 65% 76 1012.9
11 07:52 Calm 16.09 Partly Cloudy FEW120 SCT250 16.1 10.6 21.1 15.6 70% 75.97 1012.6
11 06:52 S 7 16.09 A Few Clouds FEW120 FEW250 16.1 10.6 70% 76 1012.8
11 05:52 S 6 16.09 Partly Cloudy FEW120 SCT250 16.7 10.6 67% 76 1012.7
11 04:52 S 7 16.09 Fair CLR 16.7 10 65% 76 1012.9
11 03:52 S 11 16.09 A Few Clouds FEW120 18.3 10 59% 76.02 1013.2
11 02:52 S 13 16.09 A Few Clouds FEW120 20 10 53% 76.05 1013.5
11 01:52 S 9 16.09 Mostly Cloudy BKN120 21.1 10 24.4 20 49% 76.07 1013.7
11 00:52 S 11 16.09 Partly Cloudy SCT090 SCT120 20 9.4 51% 76.1 1014.3
10 23:52 S 9 16.09 A Few Clouds FEW100 20.6 8.9 47% 76.15 1014.8
10 22:52 S 9 16.09 A Few Clouds FEW100 22.2 8.9 43% 76.15 1014.9
10 21:52 S 11 16.09 A Few Clouds FEW100 22.8 8.3 40% 76.12 1014.7
10 20:52 S 9 16.09 A Few Clouds FEW070 23.3 8.3 38% 76.12 1014.8
10 19:52 S 6 16.09 A Few Clouds FEW070 24.4 8.3 29.4 24.4 36% 25 76.1 1014.5
10 18:52 S 15 16.09 A Few Clouds FEW070 26.1 8.3 32% 26 76.07 1014.2
10 17:52 S 13 16.09 A Few Clouds FEW050 FEW250 28.9 7.8 27% 28 76.07 1013.8
10 16:52 SW 24 G 31 16.09 A Few Clouds FEW050 FEW250 28.9 7.8 27% 28 76.07 1014.1
10 15:52 SW 20 G 26 16.09 Fair CLR 28.9 7.2 25% 28 76.1 1014.4
10 14:52 SW 17 G 30 16.09 Fair CLR 28.9 8.3 27% 28 76.15 1015.2
10 13:52 SW 15 16.09 Fair CLR 28.3 9.4 28.3 6.1 31% 27 76.23 1016.1
10 12:52 S 15 16.09 Fair CLR 27.2 8.9 32% 27 76.28 1016.6
10 11:52 SW 9 16.09 A Few Clouds FEW250 24.4 6.1 31% 25 76.3 1017.2
10 10:52 S 7 16.09 A Few Clouds FEW070 FEW250 20 6.1 40% 76.35 1017.7
10 09:52 Calm 16.09 Mostly Cloudy BKN070 BKN170 BKN250 16.1 7.2 56% 76.38 1018.2
10 08:52 Calm 16.09 Mostly Cloudy SCT170 BKN250 11.1 7.2 77% 76.38 1018.3
10 07:52 Calm 16.09 Mostly Cloudy SCT180 BKN250 6.1 4.4 11.7 5 89% 76.3 1017.4
10 06:52 Calm 16.09 Partly Cloudy SCT250 5.6 3.9 89% 76.3 1017.1
10 05:52 Calm 16.09 A Few Clouds FEW250 6.7 4.4 85% 76.25 1016.6
10 04:52 Calm 16.09 A Few Clouds FEW250 6.7 4.4 85% 76.25 1016.3
10 03:52 Calm 16.09 A Few Clouds FEW250 7.8 5 83% 76.25 1016.4
10 02:52 SE 6 16.09 Fair CLR 11.1 5.6 69% 76.2 1015.8
10 01:52 S 6 16.09 Fair CLR 10 5.6 16.7 8.9 74% 76.23 1016.2
10 00:52 Calm 16.09 Fair CLR 11.1 5.6 69% 76.25 1016.3
09 23:52 S 7 16.09 Fair CLR 12.8 5.6 62% 76.23 1016.2
09 22:52 S 7 16.09 Fair CLR 13.3 5 57% 76.2 1015.8
09 21:52 S 7 16.09 Fair CLR 13.9 5 55% 76.17 1015.5
09 20:52 S 9 16.09 Fair CLR 15.6 3.9 46% 76.15 1015.1
09 19:52 S 6 16.09 Fair CLR 16.1 4.4 24.4 16.1 46% 76.12 1014.9
09 18:52 S 9 16.09 Fair CLR 21.7 4.4 32% 76.1 1014.6
09 17:52 SW 13 16.09 Fair CLR 23.9 5 29% 25 76.1 1014.4
09 16:52 SW 17 16.09 A Few Clouds FEW055 24.4 5.6 30% 25 76.1 1014.5
09 15:52 S 22 G 35 16.09 A Few Clouds FEW055 24.4 5 29% 25 76.15 1015.0
09 14:52 SW 17 16.09 A Few Clouds FEW055 23.9 6.1 32% 25 76.15 1015.1
09 13:52 S 19 16.09 A Few Clouds FEW055 23.3 6.7 23.3 3.3 34% 76.2 1015.9
09 12:52 Vrbl 7 16.09 A Few Clouds FEW055 21.7 3.9 31% 76.3 1017.3
09 11:52 S 9 16.09 A Few Clouds FEW050 20.6 3.3 32% 76.38 1018.0
09 10:52 Vrbl 7 16.09 Fair CLR 18.3 3.3 37% 76.4 1018.7
09 09:52 Calm 16.09 Fair CLR 14.4 5.6 56% 76.45 1019.1
09 08:52 Calm 16.09 Fair CLR 9.4 6.1 80% 76.4 1018.6
09 07:52 Calm 16.09 Fair CLR 3.9 2.2 7.8 2.8 89% 76.35 1017.9
09 06:52 Calm 16.09 Fair CLR 3.9 2.2 89% 76.28 1016.7
09 05:52 SE 6 16.09 Fair CLR 3.9 2.2 89% 76.23 1016.1
09 04:52 Calm 16.09 Fair CLR 3.9 2.2 89% 76.17 1015.3
09 03:52 S 6 16.09 Fair CLR 4.4 2.2 86% 76.17 1015.3
09 02:52 Calm 16.09 Fair CLR 6.1 2.8 80% 76.2 1015.7
09 01:52 Calm 16.09 Fair CLR 7.2 2.8 18.9 6.1 74% 76.2 1015.7
09 00:52 SW 7 16.09 Fair CLR 7.8 3.3 73% 7 76.17 1015.5
08 23:52 Calm 16.09 Fair CLR 8.3 3.3 71% 76.17 1015.5
08 22:52 SE 9 16.09 A Few Clouds FEW220 11.1 3.3 59% 76.15 1015.2
08 21:52 Calm 16.09 Partly Cloudy SCT220 15 3.3 46% 76.07 1013.9
08 20:52 NW 6 16.09 Partly Cloudy FEW050 SCT220 16.1 4.4 46% 76.02 1013.3
08 19:52 NW 7 16.09 Partly Cloudy FEW060 FEW090 SCT220 18.9 5 22.8 18.9 40% 75.97 1012.6
08 18:52 NW 15 16.09 Mostly Cloudy FEW060 FEW090 BKN220 21.1 6.7 39% 75.92 1011.9
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)