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.
19 03:52 Calm 9.66 Fog/Mist CLR 2.2 2.2 100% 75.84 1011.3
19 02:52 Calm 8.05 Fog/Mist CLR 2.8 2.8 100% 75.82 1010.8
19 01:52 Calm 9.66 Fog/Mist CLR 3.3 2.8 97% 75.79 1010.7
19 00:52 Calm 9.66 Fog/Mist CLR 3.9 3.3 12.8 3.3 96% 75.79 1010.4
18 23:52 N 6 12.87 A Few Clouds FEW250 5.6 5 96% 75.74 1010.0
18 22:52 Calm 16.09 Partly Cloudy SCT050 8.3 7.2 93% 75.72 1009.5
18 21:52 Calm 16.09 Mostly Cloudy BKN055 8.9 7.2 89% 75.67 1008.9
18 20:52 S 7 16.09 Mostly Cloudy SCT050 BKN150 11.1 8.3 83% 75.62 1008.3
18 19:52 S 11 16.09 Overcast BKN055 OVC150 12.2 8.3 77% 75.59 1007.8
18 18:52 S 15 16.09 Overcast OVC060 12.8 7.8 13.3 9.4 72% 75.59 1007.7
18 17:52 S 17 16.09 Overcast OVC055 13.3 7.8 70% 75.57 1007.3
18 16:52 S 13 16.09 Overcast BKN055 OVC160 13.3 7.2 67% 75.54 1007.2
18 15:52 Calm 16.09 Overcast OVC050 12.2 6.7 69% 75.49 1006.5
18 14:52 SE 6 16.09 Overcast BKN050 OVC160 11.1 6.7 75% 75.51 1006.7
18 13:52 SE 6 16.09 Overcast OVC060 10.6 5.6 71% 75.54 1007.0
18 12:52 S 9 11.27 Overcast OVC070 9.4 5 9.4 1.7 74% 8 75.62 1008.0
18 11:52 SW 9 12.87 Overcast BKN075 OVC200 7.8 4.4 79% 6 75.67 1008.9
18 10:52 S 6 9.66 Overcast with Haze BKN120 OVC200 6.7 3.9 83% 75.77 1010.2
18 09:52 Calm 6.44 Fog/Mist BKN150 OVC200 5.6 3.3 85% 75.84 1011.2
18 08:52 Calm 4.83 Fog/Mist BKN230 4.4 3.3 93% 75.92 1012.3
18 07:52 Calm 4.02 Fog/Mist SCT160 OVC240 2.2 1.7 97% 75.9 1012.0
18 06:52 W 6 6.44 Fog/Mist OVC160 2.8 2.2 4.4 2.2 96% 75.97 1013.0
18 05:52 NE 6 11.27 Overcast OVC190 3.3 2.2 93% 76 1013.1
18 04:52 Calm 11.27 Overcast OVC150 2.8 2.2 96% 76.05 1013.8
18 03:52 NW 6 11.27 Overcast BKN150 OVC170 3.3 2.8 97% 76.07 1014.4
18 01:52 E 7 12.87 Overcast OVC180 4.4 3.3 93% 3 76.2 1016.0
18 00:52 E 7 14.48 Overcast OVC160 4.4 3.3 5.6 1.7 93% 3 76.23 1016.4
17 23:52 Calm 12.87 Overcast OVC170 2.8 2.2 96% 76.33 1017.8
17 22:52 NE 7 14.48 Mostly Cloudy BKN150 BKN180 4.4 2.8 89% 3 76.33 1017.8
17 21:52 Calm 16.09 Mostly Cloudy BKN200 1.7 1.1 96% 76.38 1018.5
17 20:52 Calm 16.09 A Few Clouds FEW140 2.2 1.7 97% 76.43 1019.2
17 19:52 Calm 16.09 Mostly Cloudy SCT140 BKN200 3.9 2.8 93% 76.45 1019.6
17 18:52 E 6 16.09 Overcast BKN140 OVC200 5.6 3.3 11.7 5.6 85% 76.45 1019.5
17 17:52 SE 11 16.09 Overcast BKN140 OVC200 8.3 3.3 71% 7 76.45 1019.3
17 16:52 SW 6 16.09 Overcast BKN140 OVC200 11.1 3.9 61% 76.43 1019.2
17 15:52 S 7 16.09 Overcast BKN140 OVC200 10.6 3.3 61% 76.43 1019.1
17 14:52 S 7 16.09 Mostly Cloudy BKN200 10 3.9 66% 9 76.45 1019.3
17 12:52 SW 7 11.27 Mostly Cloudy BKN008 BKN080 5.6 2.8 6.1 1.7 82% 4 76.56 1020.7
17 11:52 Vrbl 7 8.05 Fog/Mist OVC004 3.9 2.8 93% 2 76.61 1021.5
17 10:52 SW 11 4.02 Fog/Mist OVC002 2.8 2.8 100% 0 76.66 1022.1
17 09:52 S 9 1.21 Fog/Mist OVC002 2.8 2.2 96% 1 76.66 1022.1
17 08:52 SW 11 0.40 Fog VV002 2.2 1.7 97% -1 76.68 1022.4
17 07:52 SW 9 0.40 Fog VV002 1.7 1.7 100% -1 76.66 1022.3
17 05:52 S 6 9.66 Fog/Mist OVC004 2.2 1.7 97% 76.63 1021.8
17 04:52 S 7 9.66 Fog/Mist OVC005 2.2 1.7 97% 0 76.61 1021.4
17 03:52 S 7 8.05 Fog/Mist OVC007 1.1 1.1 100% -1 76.61 1021.4
17 02:52 Calm 8.05 Fog/Mist SCT009 0 -0.6 96% 76.63 1021.8
17 01:52 SE 9 8.05 Fog/Mist SCT210 0 0 100% -3 76.63 1021.9
17 00:52 SE 6 8.05 Fog/Mist SCT210 0 0 4.4 -0.6 100% 76.66 1022.1
16 23:52 SE 6 9.66 Fog/Mist FEW015 0.6 0 96% 76.68 1022.5
16 22:52 Calm 9.66 Fog/Mist CLR 1.1 0 92% 76.68 1022.4
16 21:52 S 6 9.66 Fog/Mist CLR 1.1 0.6 97% 76.68 1022.4
16 20:52 SE 7 9.66 Fog/Mist CLR 2.8 1.1 89% 1 76.66 1022.2
16 19:52 SE 9 12.87 Fair CLR 3.3 1.1 86% 1 76.63 1021.8
16 18:52 E 11 16.09 Fair CLR 4.4 1.1 8.3 4.4 79% 2 76.63 1021.9
16 17:52 SE 7 16.09 A Few Clouds FEW020 FEW250 5.6 1.7 76% 4 76.61 1021.5
16 16:52 SE 6 16.09 A Few Clouds FEW029 FEW250 7.8 1.7 66% 76.56 1020.9
16 15:52 Calm 16.09 Partly Cloudy SCT020 8.3 2.2 66% 76.53 1020.5
16 13:52 N 7 16.09 Overcast OVC019 6.7 1.7 71% 6 76.56 1020.6
16 12:52 NW 15 16.09 Overcast OVC019 6.1 2.2 6.7 1.7 76% 3 76.56 1020.7
16 11:52 Vrbl 7 16.09 Overcast OVC018 6.7 2.2 73% 6 76.58 1021.1
16 10:52 N 9 14.48 Overcast OVC015 5.6 1.7 76% 4 76.56 1020.7
16 09:52 N 9 11.27 Overcast BKN012 OVC017 3.3 1.1 86% 1 76.56 1020.7
16 08:52 N 13 9.66 Fog/Mist BKN011 OVC026 2.8 0.6 86% -0 76.5 1020.2
16 07:52 N 15 8.05 Fog/Mist SCT009 OVC018 2.2 0.6 89% -1 76.45 1019.5
16 06:52 N 20 9.66 Fog/Mist OVC008 1.7 0.6 2.8 1.7 93% -3 76.38 1018.6
16 05:52 N 22 8.05 Fog/Mist OVC007 1.7 0.6 93% -3 76.25 1016.9
16 04:52 N 20 6.44 Fog/Mist OVC005 1.7 1.1 96% -3 76.23 1016.3
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)