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.
20 12:52 Calm 16.09 Overcast BKN022 OVC055 8.9 4.4 8.9 5 74% 76.61 1021.4
20 11:52 Vrbl 6 16.09 Overcast OVC021 7.8 3.9 77% 76.71 1022.8
20 10:52 Calm 11.27 Overcast OVC021 7.8 3.9 77% 76.78 1023.7
20 09:52 S 6 11.27 Overcast BKN017 OVC034 6.7 3.3 79% 76.81 1024.0
20 08:52 E 6 11.27 Overcast OVC015 6.1 2.8 80% 76.84 1024.4
20 07:52 Calm 16.09 Overcast OVC014 5.6 2.8 82% 76.84 1024.5
20 06:52 Calm 16.09 Overcast OVC015 5 2.8 5.6 5 86% 76.81 1023.9
20 05:52 E 6 16.09 Overcast BKN016 OVC035 5 2.8 86% 76.78 1023.9
20 04:52 W 6 16.09 Overcast OVC018 5.6 2.8 82% 76.81 1024.2
20 03:52 Calm 16.09 Overcast OVC024 5.6 2.8 82% 76.78 1023.9
20 02:52 Calm 16.09 Overcast FEW015 OVC024 5.6 2.8 82% 76.81 1024.0
20 01:52 N 7 16.09 Overcast OVC025 5.6 2.8 82% 4 76.78 1023.8
20 00:52 Calm 16.09 Overcast FEW015 OVC025 5.6 2.8 6.7 5.6 82% 76.81 1024.1
19 23:52 N 6 16.09 Overcast FEW015 OVC024 6.1 2.8 80% 76.81 1024.3
19 22:52 NE 7 16.09 Overcast OVC025 6.1 2.8 80% 5 76.86 1024.7
19 21:52 NE 7 16.09 Overcast FEW018 OVC028 6.1 2.8 80% 5 76.89 1025.1
19 20:52 NW 6 16.09 Overcast SCT018 OVC029 6.1 2.8 80% 76.86 1024.9
19 19:52 NW 7 16.09 Mostly Cloudy BKN018 BKN250 5.6 2.8 82% 4 76.86 1024.7
19 18:52 N 11 16.09 Overcast OVC018 6.7 2.8 7.2 6.7 76% 5 76.81 1024.0
19 17:52 NW 15 16.09 Overcast OVC018 6.7 2.8 76% 4 76.78 1023.7
19 16:52 N 15 16.09 Mostly Cloudy BKN017 BKN250 6.7 3.3 79% 4 76.76 1023.3
19 15:52 N 11 16.09 Mostly Cloudy BKN017 BKN250 7.2 3.3 77% 5 76.71 1022.8
19 14:52 N 17 16.09 Mostly Cloudy BKN017 BKN250 7.2 3.3 77% 5 76.68 1022.3
19 13:52 N 13 16.09 Overcast OVC018 7.2 3.3 77% 5 76.66 1022.1
19 12:52 N 17 16.09 Overcast OVC015 6.7 3.3 7.2 5.6 79% 4 76.66 1022.2
19 11:52 N 17 16.09 Overcast OVC015 6.7 3.9 83% 4 76.63 1021.8
19 10:52 N 15 16.09 Mostly Cloudy SCT010 BKN015 6.7 3.3 79% 4 76.66 1022.1
19 09:52 N 13 16.09 Overcast SCT008 BKN014 OVC017 6.1 4.4 89% 4 76.63 1021.6
19 08:52 N 17 9.66 Fog/Mist BKN008 OVC015 6.1 5 93% 3 76.53 1020.5
19 07:52 NW 11 9.66 Fog/Mist OVC006 5.6 5 96% 3 76.5 1020.0
19 06:52 NW 13 4.83 Fog/Mist OVC003 5.6 5 6.1 5 96% 3 76.43 1019.1 0.18
19 05:52 NW 11 4.83 Fog/Mist OVC003 5.6 5 96% 3 76.35 1017.9
19 04:52 NW 15 6.44 Fog/Mist OVC004 5.6 5 96% 3 76.3 1017.4
19 03:52 NW 6 6.44 Fog/Mist OVC005 5.6 5.6 100% 76.25 1016.6 0.18
19 02:52 Calm 9.66 Light Rain Fog/Mist OVC006 6.1 5.6 97% 76.28 1017.1 0.05
19 01:52 E 11 9.66 Light Rain Fog/Mist BKN006 OVC060 5.6 5 96% 3 76.25 1016.6 0.13
19 00:52 SE 7 12.87 Light Rain OVC060 5 4.4 5.6 4.4 96% 4 76.38 1018.3 0.05 0.3
18 23:52 E 7 9.66 Light Rain Fog/Mist OVC065 5 3.9 93% 4 76.48 1019.7 0.15
18 22:52 NE 6 16.09 Overcast OVC070 5 3.9 93% 76.53 1020.3
18 21:52 E 7 16.09 Light Rain OVC050 5 3.3 89% 4 76.53 1020.2 0.03 0.1
18 20:52 Calm 16.09 Light Rain BKN042 OVC060 5 3.3 89% 76.58 1021.2
18 19:52 SE 7 16.09 Overcast SCT048 BKN070 OVC095 4.4 3.9 97% 3 76.56 1020.9 0.08
18 18:52 S 6 12.87 Rain BKN042 OVC075 5 3.3 9.4 4.4 89% 76.61 1021.4 0.18 0.25
18 17:52 SW 7 16.09 Light Rain OVC045 5.6 2.2 79% 4 76.63 1021.8 0.08
18 16:52 S 15 16.09 Overcast OVC050 8.3 -3.9 42% 6 76.58 1021.1
18 15:52 S 7 16.09 Overcast OVC055 8.9 -5 37% 8 76.58 1021.0
18 14:52 S 13 16.09 Overcast OVC060 8.9 -5 37% 7 76.61 1021.4
18 13:52 S 9 16.09 Overcast BKN070 OVC110 8.9 -4.4 39% 8 76.66 1022.1
18 12:52 S 11 16.09 Overcast FEW065 SCT085 OVC110 8.9 -5 9.4 -3.3 37% 7 76.68 1022.4
18 11:52 SW 13 16.09 Mostly Cloudy FEW100 SCT140 SCT180 BKN250 8.9 -5.6 36% 7 76.73 1023.0
18 10:52 Vrbl 7 16.09 Mostly Cloudy FEW065 FEW120 SCT180 BKN250 7.8 -5 40% 7 76.81 1024.4
18 09:52 S 7 16.09 Mostly Cloudy FEW065 FEW110 SCT180 BKN250 5.6 -5.6 45% 4 76.84 1024.6
18 08:52 Calm 16.09 Mostly Cloudy FEW190 BKN250 1.7 -3.9 67% 76.84 1024.5
18 07:52 Calm 16.09 Mostly Cloudy FEW110 FEW190 BKN250 -1.1 -5.6 72% 76.81 1024.3
18 06:52 S 6 16.09 Mostly Cloudy BKN250 -2.8 -6.1 0 -4.4 78% 76.76 1023.7
18 05:52 Calm 16.09 Fair CLR -2.8 -6.7 75% 76.71 1023.0
18 04:52 N 6 16.09 Fair CLR -2.2 -6.1 75% 76.68 1022.5
18 03:52 Calm 16.09 Fair CLR -2.8 -6.7 75% 76.66 1022.2
18 02:52 NW 7 16.09 Fair CLR -2.2 -6.7 72% -5 76.63 1021.8
18 01:52 NW 6 16.09 Fair CLR -1.1 -6.7 66% 76.61 1021.3
18 00:52 Calm 16.09 Fair CLR 0 -6.7 6.1 -1.1 61% 76.58 1020.9
17 23:52 NW 6 16.09 Fair CLR 1.7 -6.7 54% 76.56 1020.6
17 22:52 NW 9 16.09 Fair CLR 0.6 -6.7 58% -2 76.5 1020.2
17 21:52 SW 6 16.09 Fair CLR -0.6 -6.1 67% 76.48 1019.8
17 20:52 NW 7 16.09 Fair CLR 4.4 -6.7 45% 3 76.43 1019.0
17 19:52 NW 9 16.09 Fair CLR 5 -7.2 41% 3 76.38 1018.4
17 18:52 NW 9 16.09 Fair CLR 6.1 -7.2 10.6 5.6 38% 4 76.3 1017.5
17 17:52 NW 11 16.09 Fair CLR 6.1 -7.2 38% 4 76.25 1016.5
17 16:52 NW 13 16.09 A Few Clouds FEW080 8.3 -7.8 31% 6 76.17 1015.7
17 15:52 NW 19 G 39 16.09 A Few Clouds FEW080 9.4 -8.3 28% 7 76.12 1014.9
17 14:52 NW 30 G 41 16.09 A Few Clouds FEW080 10 -7.8 28% 7 76.05 1014.0
17 13:52 NW 30 G 46 16.09 A Few Clouds FEW060 10.6 -7.8 27% 76.02 1013.5
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)