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.
04 03:52 S 9 4.83 Fog/Mist OVC070 6.7 6.1 96% 5 76.73 1023.1
04 02:52 Calm 4.83 Fog/Mist OVC060 6.7 6.1 96% 76.76 1023.3
04 01:52 SW 7 4.83 Fog/Mist OVC009 6.7 6.1 96% 6 76.78 1023.8
04 00:52 S 9 4.83 Fog/Mist OVC007 6.7 5.6 6.7 3.9 93% 5 76.76 1023.5 0.33
03 23:52 S 17 4.83 Light Rain OVC005 6.1 5.6 97% 3 76.76 1023.6 0.03
03 22:52 S 15 4.83 Overcast OVC004 5.6 5 96% 3 76.78 1024.0
03 21:52 S 13 2.41 Fog/Mist OVC003 5 4.4 96% 2 76.78 1023.7 0.03 0.3
03 20:52 S 15 2.41 Light Rain Fog/Mist OVC003 4.4 3.9 97% 1 76.84 1024.5 0.08
03 19:52 S 9 2.41 Light Rain Fog/Mist BKN004 OVC041 3.9 3.9 100% 2 76.86 1024.9 0.2
03 18:52 S 11 2.41 Light Rain Fog/Mist OVC004 3.9 3.3 3.9 1.7 96% 1 76.94 1025.9 0.2 0.41
03 17:52 Calm 2.41 Light Rain Fog/Mist OVC004 3.9 3.3 96% 76.96 1026.2 0.15
03 16:52 S 11 2.41 Light Rain Fog/Mist OVC004 3.9 3.3 96% 1 76.96 1026.1 0.05
03 15:52 S 11 2.41 Overcast OVC005 3.9 2.8 93% 1 77.01 1026.8
03 14:52 S 9 2.41 Fog/Mist OVC004 2.8 2.2 96% 1 77.04 1027.2
03 13:52 S 9 2.41 Fog/Mist BKN004 OVC013 2.2 1.7 97% -0 77.11 1028.3
03 12:52 S 7 2.41 Fog/Mist BKN004 OVC012 1.7 1.1 1.7 0 96% -0 77.24 1030.0 0.03
03 11:52 SE 6 0.80 Fog/Mist BKN004 OVC010 1.1 0.6 97% 77.34 1031.4 0.03
03 10:52 Calm 0.40 Light Rain Fog/Mist OVC004 0.6 0 96% 77.39 1032.0
03 09:52 Calm 0.40 Light Rain Fog/Mist OVC003 0 0 100% 77.44 1032.9
03 08:52 SW 6 0.80 Fog/Mist OVC003 0 -0.6 96% 77.5 1033.4
03 06:52 Calm 8.05 Light Freezing Drizzle Fog/Mist OVC005 0 -0.6 0 -0.6 96% 77.47 1033.1 0.05 0.23
03 05:52 Calm 8.05 Light Rain Fog/Mist OVC008 0 -1.1 92% 77.47 1033.1 0.03
03 04:52 SE 6 11.27 Light Rain Fog/Mist FEW008 OVC011 0 -1.1 92% 77.5 1033.4 0.05
03 03:52 Calm 11.27 Light Rain FEW008 OVC015 0 -1.1 92% 77.55 1034.2 0.03 0.1
03 02:52 SE 7 11.27 Light Rain BKN010 OVC023 0 -1.1 92% -2 77.55 1034.3 0.03
03 01:52 SE 6 8.05 Light Rain Fog/Mist OVC007 -0.6 -1.7 92% 77.62 1035.1 0.05
03 00:52 SE 6 8.05 Light Rain Fog/Mist SCT007 OVC028 -0.6 -1.1 -0.6 -1.1 96% 77.65 1035.4
02 23:52 Calm 8.05 Fog/Mist OVC007 -0.6 -1.7 92% 77.65 1035.6
02 22:52 S 7 9.66 Light Drizzle Fog/Mist OVC010 -0.6 -1.7 92% -3 77.67 1035.9
02 21:52 SE 7 11.27 Overcast OVC009 -0.6 -2.2 89% -3 77.7 1036.2
02 20:52 SE 6 11.27 Overcast FEW007 BKN012 OVC031 -1.1 -2.2 92% 77.72 1036.5
02 19:52 SE 6 11.27 Overcast BKN010 OVC035 -1.1 -2.2 92% 77.72 1036.4
02 18:52 Calm 4.02 Light Snow Fog/Mist BKN009 BKN015 OVC046 -1.1 -2.2 0.6 -1.1 92% 77.72 1036.4 0.03 0.13
02 17:52 E 9 4.83 Light Snow Fog/Mist FEW009 BKN017 OVC037 -1.1 -2.8 88% -4 77.67 1036.0 0.03
02 16:52 SE 7 3.22 Light Snow Fog/Mist BKN018 OVC037 -1.1 -2.8 88% -3 77.67 1035.8 0.05
02 15:52 SE 7 2.41 Light Snow Fog/Mist BKN023 OVC037 -1.1 -2.8 88% -3 77.67 1035.9 0.03 0.03
02 14:52 E 11 14.48 Light Snow BKN050 OVC065 0 -5.6 66% -3 77.7 1036.1
02 13:52 NE 17 6.44 Light Snow FEW008 SCT029 OVC036 -0.6 -3.3 82% -5 77.7 1036.1
02 12:52 NE 13 14.48 Light Snow BKN045 BKN055 OVC100 -1.1 -4.4 0.6 -1.7 79% -5 77.72 1036.5
02 11:52 NE 9 16.09 Light Snow BKN045 BKN055 OVC090 0.6 -8.9 49% -2 77.77 1037.2
02 10:52 E 7 16.09 Overcast SCT060 BKN080 OVC095 0 -9.4 50% -2 77.77 1037.3
02 09:52 E 9 16.09 Overcast SCT060 OVC110 0 -10 47% -3 77.8 1037.3
02 08:52 NE 11 16.09 Mostly Cloudy BKN110 BKN160 -0.6 -10 49% -4 77.72 1036.5
02 07:52 NE 11 16.09 Mostly Cloudy FEW055 FEW100 BKN150 -0.6 -10 49% -4 77.72 1036.3
02 06:52 NE 9 16.09 Partly Cloudy FEW055 SCT110 SCT250 -1.7 -10 1.7 -2.2 54% -5 77.62 1035.2
02 05:52 NE 9 16.09 Partly Cloudy SCT055 -1.7 -10 54% -5 77.57 1034.4
02 04:52 NE 11 16.09 Mostly Cloudy BKN055 -1.1 -10.6 49% -5 77.57 1034.2
02 03:52 N 11 16.09 A Few Clouds FEW150 -0.6 -10.6 47% -4 77.5 1033.2
02 02:52 N 15 16.09 Fair CLR 0.6 -10.6 43% -3 77.44 1032.4
02 01:52 N 13 16.09 Partly Cloudy SCT250 1.1 -10 44% -2 77.44 1032.4
02 00:52 NE 15 16.09 Mostly Cloudy BKN250 1.7 -9.4 6.7 0 44% -2 77.37 1031.5
01 23:52 N 9 16.09 A Few Clouds FEW250 2.8 -7.2 48% 1 77.32 1030.8
01 22:52 NE 9 16.09 A Few Clouds FEW250 3.3 -7.8 44% 1 77.27 1030.2
01 21:52 NE 7 16.09 A Few Clouds FEW250 3.3 -6.7 48% 2 77.24 1029.8
01 20:52 NE 11 16.09 A Few Clouds FEW250 3.9 -5 53% 1 77.19 1029.1
01 19:52 NE 13 16.09 Mostly Cloudy BKN250 5 -4.4 51% 2 77.09 1028.0
01 18:52 NE 19 16.09 Mostly Cloudy FEW060 BKN250 6.7 -3.9 12.2 6.7 47% 4 77.04 1027.1
01 17:52 NE 20 16.09 Mostly Cloudy FEW060 BKN250 7.8 -2.8 47% 5 76.91 1025.5
01 16:52 NE 15 16.09 A Few Clouds FEW080 FEW250 10 -2.2 43% 8 76.84 1024.3
01 15:52 NE 24 G 35 16.09 A Few Clouds FEW080 10.6 -1.7 43% 76.76 1023.4
01 14:52 N 24 G 39 16.09 A Few Clouds FEW080 11.7 -0.6 43% 76.71 1022.6
01 13:52 N 17 16.09 A Few Clouds FEW060 FEW080 12.2 0 43% 76.68 1022.3
01 12:52 N 19 G 33 16.09 A Few Clouds FEW050 FEW070 11.7 0 12.2 6.7 45% 76.68 1022.2
01 11:52 N 20 16.09 A Few Clouds FEW050 10.6 0 48% 76.71 1022.6
01 10:52 N 17 16.09 A Few Clouds FEW050 FEW070 10 0.6 52% 8 76.71 1022.7
01 09:52 N 28 G 39 16.09 A Few Clouds FEW040 FEW070 8.3 -0.6 54% 5 76.66 1022.1
01 08:52 N 19 16.09 A Few Clouds FEW030 FEW160 7.8 0 58% 5 76.56 1020.8
01 07:52 N 19 16.09 Partly Cloudy SCT160 SCT250 6.7 0.6 65% 4 76.45 1019.3
01 06:52 N 20 16.09 Mostly Cloudy FEW070 BKN150 BKN250 7.2 2.2 8.3 2.8 71% 4 76.35 1017.8
01 05:52 NW 6 16.09 Overcast FEW080 BKN100 OVC110 6.1 3.3 82% 76.3 1017.3
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)