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.
08 20:52 S 9 16.09 A Few Clouds FEW150 FEW250 7.8 2.8 71% 6 76.84 1024.6
08 19:52 SE 7 16.09 Mostly Cloudy FEW150 BKN250 7.8 2.8 71% 7 76.84 1024.5
08 18:52 S 7 16.09 Mostly Cloudy SCT150 BKN250 8.9 2.8 13.9 8.3 66% 8 76.84 1024.6
08 17:52 SE 9 16.09 Mostly Cloudy SCT150 BKN250 9.4 2.8 64% 8 76.78 1024.0
08 16:52 S 7 16.09 Mostly Cloudy SCT150 BKN250 11.7 2.8 55% 76.76 1023.3
08 15:52 Vrbl 9 16.09 Mostly Cloudy FEW140 BKN250 13.9 3.3 49% 76.73 1023.3
08 14:52 Vrbl 9 16.09 Mostly Cloudy BKN140 BKN250 13.3 3.3 51% 76.71 1022.8
08 13:52 Vrbl 9 16.09 Mostly Cloudy BKN250 13.3 3.3 51% 76.73 1023.0
08 12:52 S 15 16.09 Mostly Cloudy BKN250 12.8 3.3 12.8 -2.8 53% 76.76 1023.4
08 11:52 Vrbl 9 16.09 Mostly Cloudy BKN250 12.2 3.3 55% 76.78 1023.9
08 10:52 Vrbl 7 16.09 Mostly Cloudy BKN250 10.6 3.3 61% 76.84 1024.5
08 09:52 Calm 16.09 Mostly Cloudy BKN250 7.8 3.3 73% 76.84 1024.4
08 08:52 Calm 14.48 A Few Clouds FEW250 2.8 1.7 93% 76.76 1023.4
08 07:52 Calm 11.27 Fair CLR -2.2 -2.2 100% 76.71 1022.8
08 06:52 Calm 16.09 Fair CLR -1.7 -2.2 2.8 -2.2 96% 76.63 1021.8
08 05:52 SE 6 11.27 Fair CLR -1.7 -1.7 100% 76.58 1021.0
08 04:52 S 9 16.09 A Few Clouds FEW250 -1.1 -1.7 96% -4 76.56 1020.6
08 03:52 Calm 16.09 A Few Clouds FEW200 -0.6 -1.1 96% 76.5 1020.1
08 02:52 Calm 16.09 Fair CLR -0.6 -0.6 100% 76.43 1019.2
08 01:52 Calm 16.09 Fair CLR 0.6 0 96% 76.38 1018.4
08 00:52 Calm 16.09 Fair CLR 2.2 1.1 10.6 1.7 93% 76.33 1017.7
07 23:52 Calm 16.09 Fair CLR 3.3 1.7 89% 76.33 1017.7
07 22:52 N 9 16.09 Fair CLR 6.7 2.2 73% 5 76.3 1017.4
07 21:52 N 9 16.09 Fair CLR 8.9 3.3 68% 8 76.28 1016.8
07 20:52 Calm 16.09 Fair CLR 10 2.8 61% 76.23 1016.5
07 19:52 NW 7 16.09 Fair CLR 9.4 2.8 64% 9 76.23 1016.5
07 18:52 NW 9 16.09 Fair CLR 10 3.3 16.7 10 63% 9 76.17 1015.5
07 17:52 NW 19 16.09 Fair CLR 11.7 3.3 57% 76.07 1014.2
07 16:52 NW 17 16.09 A Few Clouds FEW065 12.8 2.8 51% 76 1013.1
07 15:52 NW 15 G 31 16.09 A Few Clouds FEW065 15 3.3 46% 75.95 1012.5
07 14:52 NW 26 G 43 16.09 Mostly Cloudy BKN060 15.6 3.3 44% 75.92 1012.0
07 13:52 NW 20 G 37 16.09 Partly Cloudy SCT060 SCT250 16.1 3.9 44% 75.84 1011.3
07 12:52 NW 26 G 37 16.09 Mostly Cloudy BKN060 16.1 3.9 16.7 2.8 44% 75.77 1010.1
07 11:52 N 17 16.09 Overcast OVC060 15 4.4 49% 75.77 1010.3
07 10:52 Calm 16.09 Mostly Cloudy BKN055 BKN110 13.9 5.6 58% 75.74 1010.0
07 09:52 Calm 16.09 Mostly Cloudy SCT060 SCT110 BKN250 13.3 7.2 67% 75.72 1009.4
07 08:52 Calm 14.48 Mostly Cloudy SCT060 BKN250 6.7 5.6 93% 75.67 1008.8
07 07:52 S 7 9.66 Fog/Mist FEW050 2.8 2.2 96% 1 75.57 1007.7
07 06:52 S 6 16.09 A Few Clouds FEW040 3.9 3.3 6.1 0.6 96% 75.49 1006.5
07 05:52 Calm 11.27 Fair CLR 3.9 3.9 100% 75.44 1006.0
07 04:52 S 11 14.48 Fair CLR 4.4 3.9 97% 2 75.39 1005.2
07 03:52 S 13 11.27 Fair CLR 3.9 3.9 100% 1 75.36 1004.9
07 02:52 Calm 11.27 Fair CLR 2.2 2.2 100% 75.41 1005.4
07 01:52 N 6 11.27 Mostly Cloudy SCT065 BKN080 2.8 2.2 96% 75.36 1004.8
07 00:52 Calm 9.66 Fog/Mist OVC090 2.8 2.2 6.1 0 96% 75.34 1004.6
06 23:52 Calm 9.66 Fog/Mist FEW006 0.6 0.6 100% 75.39 1005.3
06 22:52 Calm 9.66 Fog/Mist FEW090 2.8 2.8 100% 75.41 1005.5
06 21:52 Calm 12.87 Mostly Cloudy BKN090 3.9 2.8 93% 75.44 1005.8
06 20:52 Calm 12.87 Mostly Cloudy BKN085 5 3.9 93% 75.44 1006.0
06 19:52 Calm 12.87 Mostly Cloudy BKN080 BKN250 5.6 3.9 89% 75.49 1006.7
06 18:52 Calm 12.87 Mostly Cloudy BKN070 BKN250 5.6 3.9 9.4 3.9 89% 75.54 1007.1
06 17:52 SE 6 12.87 Mostly Cloudy BKN070 BKN250 4.4 2.8 89% 75.57 1007.6
06 16:52 SE 6 14.48 Mostly Cloudy BKN075 BKN250 7.2 4.4 83% 75.59 1007.8
06 15:52 S 9 16.09 Overcast SCT090 OVC250 7.8 4.4 79% 6 75.57 1007.5
06 14:52 Vrbl 9 16.09 Overcast FEW120 OVC230 8.9 3.9 71% 8 75.54 1007.3
06 13:52 SE 7 14.48 Overcast OVC230 7.8 3.3 73% 7 75.64 1008.4
06 12:52 E 6 14.48 Overcast FEW011 OVC220 6.7 2.8 6.7 -1.7 76% 75.74 1009.9
06 11:52 NW 6 12.87 Overcast BKN170 OVC240 5 1.1 76% 75.84 1011.2
06 10:52 NW 6 12.87 Overcast OVC240 3.9 0.6 79% 75.95 1012.8
06 09:52 Calm 12.87 Overcast OVC240 2.8 0.6 86% 76.02 1013.6
06 08:52 Calm 14.48 Mostly Cloudy BKN230 1.1 -0.6 89% 76.05 1014.1
06 07:52 Calm 14.48 Mostly Cloudy BKN230 -0.6 -2.2 89% 76.02 1013.7
06 06:52 Calm 16.09 Mostly Cloudy BKN220 -1.7 -2.2 2.2 -1.7 96% 76.05 1014.0
06 05:52 Calm 16.09 Overcast OVC230 -1.1 -1.7 96% 76.07 1014.3
06 04:52 SE 6 16.09 Overcast OVC230 -0.6 -1.7 92% 76.05 1014.1
06 03:52 Calm 16.09 Overcast OVC240 -0.6 -1.7 92% 76.07 1014.4
06 02:52 NW 6 16.09 Overcast OVC220 0.6 -1.1 89% 76.1 1014.6
06 01:52 Calm 16.09 Overcast OVC250 1.7 -0.6 85% 76.07 1014.4
06 00:52 S 7 16.09 Overcast OVC250 2.2 -0.6 3.9 1.7 82% 0 76.1 1014.7
05 23:52 S 6 16.09 Fair CLR 1.7 -1.1 82% 76.12 1014.9
05 22:52 S 7 16.09 Mostly Cloudy BKN250 1.7 -1.1 82% -0 76.17 1015.6
05 21:52 S 9 16.09 Mostly Cloudy BKN200 2.2 -1.1 79% -0 76.2 1016.1
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)