Weather observations for the past three days for
Washington/Dulles International Airport, DC
Imperial (Metric)
Date Time (est) Wind (mph) Vis. (mi.) Weather Sky Cond. Temperature (ºF) Relative Humidity Wind Chill (°F) Heat Index (°F) Pressure Precipitation (in)
Air Dwpt 6 hour altimeter (in) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
09 00:52 N 7 10.00 Mostly Cloudy SCT120 BKN250 23 3.9 28 23 44% 16 30.29 1026.1
08 23:52 N 7 10.00 Mostly Cloudy BKN120 BKN250 24.1 3.9 42% 17 30.31 1026.5
08 22:52 N 7 10.00 Mostly Cloudy BKN140 BKN250 25 3 39% 18 30.31 1026.7
08 21:52 N 6 10.00 Mostly Cloudy BKN120 BKN250 25 -0 33% 19 30.31 1026.6
08 20:52 NE 8 10.00 Overcast SCT100 OVC140 26.1 -0 32% 18 30.31 1026.6
08 19:52 N 9 10.00 Overcast BKN110 OVC115 27 -0 31% 19 30.31 1026.5
08 18:52 N 10 10.00 Overcast OVC100 28 -0 33.1 28 29% 19 30.3 1026.3
08 17:52 N 10 10.00 Overcast OVC085 28.9 3.9 34% 20 30.28 1025.8
08 16:52 N 10 10.00 Overcast OVC100 28.9 3.9 34% 20 30.25 1024.8
08 15:52 N 12 G 18 10.00 Overcast OVC090 30 5 34% 21 30.25 1024.6
08 14:52 N 10 10.00 Overcast OVC090 30.9 7 36% 23 30.23 1024.0
08 13:52 N 9 G 18 10.00 Overcast OVC095 32 8.1 36% 25 30.23 1023.9
08 12:52 N 10 10.00 Overcast BKN090 OVC140 33.1 9 35.1 32 36% 26 30.22 1023.5
08 11:52 N 14 10.00 A Few Clouds FEW085 33.1 12 42% 24 30.21 1023.5
08 10:52 NE 18 G 25 10.00 Overcast OVC085 33.1 12 42% 23 30.23 1024.1
08 09:52 N 14 10.00 Overcast BKN080 OVC090 32 12.9 45% 23 30.25 1024.5
08 08:52 NE 16 G 24 10.00 Overcast FEW045 OVC075 32 14 47% 22 30.24 1024.1
08 07:52 N 17 G 28 10.00 Overcast FEW044 SCT075 OVC090 33.1 19 56% 23 30.21 1023.1
08 06:52 N 15 G 25 10.00 Overcast OVC090 35.1 21 37 26.1 57% 26 30.19 1022.4
08 05:52 N 12 10.00 Overcast OVC040 37 28 70% 30 30.15 1021.2
08 04:52 N 8 10.00 Overcast OVC042 36 28.9 76% 30 30.14 1020.7
08 03:52 Calm 9.00 Overcast BKN100 OVC230 28.9 28 96% 30.13 1020.4
08 02:52 Calm 7.00 Overcast FEW042 SCT120 OVC230 28.9 28 96% 30.12 1020.0
08 01:52 NW 3 6.00 Fog/Mist FEW070 OVC230 30 28.9 96% 30.1 1019.4
08 00:52 S 3 6.00 Fog/Mist BKN065 28.9 28 34 27 96% 30.09 1019.2
07 23:52 Calm 6.00 Fog/Mist SCT060 BKN240 30 28.9 96% 30.08 1018.8
07 22:52 Calm 7.00 Fair CLR 30 28.9 96% 30.07 1018.4
07 21:52 Calm 7.00 Mostly Cloudy BKN055 28 27 96% 30.06 1018.3
07 20:52 Calm 8.00 Partly Cloudy SCT060 28.9 27 92% 30.07 1018.6
07 19:52 S 5 10.00 Fair CLR 33.1 30 89% 29 30.06 1018.3
07 18:52 SW 3 10.00 Fair CLR 34 30 44.1 34 85% 30.08 1018.9
07 17:52 S 6 10.00 A Few Clouds FEW250 37 30 76% 33 30.08 1019.0
07 16:52 S 6 10.00 A Few Clouds FEW250 39 30 70% 35 30.06 1018.4
07 15:52 SW 5 10.00 A Few Clouds FEW035 FEW250 43 30 60% 41 30.05 1017.9
07 14:52 SW 8 10.00 Partly Cloudy FEW035 SCT250 44.1 28.9 55% 40 30.05 1017.8
07 13:52 SW 9 10.00 Mostly Cloudy FEW035 FEW230 BKN250 43 28.9 58% 38 30.07 1018.6
07 12:52 S 8 10.00 Mostly Cloudy FEW030 BKN230 42.1 28 43 26.1 58% 38 30.1 1019.3
07 11:52 SW 8 10.00 Partly Cloudy FEW025 FEW220 SCT250 42.1 30 62% 38 30.12 1020.2
07 10:52 SW 3 10.00 Mostly Cloudy FEW180 BKN250 37 32 82% 30.15 1021.2
07 09:52 Calm 8.00 Partly Cloudy FEW180 SCT250 33.1 30.9 92% 30.15 1021.2
07 08:52 S 3 5.00 Fog/Mist FEW036 FEW220 BKN250 28.9 28 96% 30.14 1020.8
07 07:52 SW 3 4.00 Fog/Mist FEW036 SCT150 BKN220 26.1 25 96% 30.13 1020.5
07 06:52 Calm 0.50 Freezing Fog BKN002 BKN007 BKN012 26.1 25 28.9 24.1 96% 30.13 1020.4
07 05:52 Calm 1.50 Fog/Mist BKN001 26.1 25 96% 30.12 1020.2
07 04:52 Calm 4.00 Fog/Mist SCT200 25 24.1 96% 30.1 1019.6
07 03:52 Calm 5.00 Fog/Mist OVC200 26.1 25 96% 30.09 1019.0
07 02:52 SW 3 3.00 Fog/Mist BKN190 25 25 100% 30.08 1018.7
07 01:52 SE 3 4.00 Fog/Mist BKN190 28 27 96% 30.05 1017.8
07 00:52 W 5 6.00 Fog/Mist FEW055 SCT190 28.9 28 32 27 96% 25 30.07 1018.4
06 23:52 Calm 5.00 Fog/Mist FEW055 30 28.9 96% 30.06 1018.0
06 22:52 Calm 5.00 Fog/Mist BKN055 30.9 30 96% 30.03 1017.3
06 21:52 S 3 8.00 Mostly Cloudy BKN055 28.9 28.9 100% 30.02 1016.9
06 20:52 Calm 7.00 Mostly Cloudy BKN060 30 30 100% 30 1016.2
06 19:52 SW 5 8.00 Partly Cloudy SCT055 SCT250 30.9 30 96% 27 29.99 1016.0
06 18:52 S 5 8.00 Partly Cloudy FEW050 SCT180 32 30.9 42.1 32 96% 28 29.98 1015.7
06 17:52 S 5 10.00 Mostly Cloudy BKN180 BKN250 35.1 32 89% 32 29.98 1015.5
06 16:52 S 6 10.00 Mostly Cloudy BKN180 BKN250 36 33.1 89% 32 29.96 1014.7
06 15:52 SW 7 10.00 Mostly Cloudy FEW030 BKN130 BKN250 37.9 33.1 83% 33 29.94 1014.1
06 14:52 SW 6 10.00 Mostly Cloudy FEW030 BKN120 BKN250 39.9 33.1 77% 36 29.91 1013.1
06 13:52 S 5 10.00 Mostly Cloudy FEW025 BKN160 BKN250 41 33.1 73% 38 29.91 1012.9
06 12:52 Calm 10.00 Mostly Cloudy FEW032 FEW120 BKN220 41 33.1 41 28.9 73% 29.92 1013.4
06 11:52 SW 5 10.00 Mostly Cloudy FEW009 FEW032 BKN220 37.9 32 79% 35 29.93 1013.6
06 10:52 SW 5 6.00 Fog/Mist BKN007 33.1 30 89% 29 29.96 1014.8
06 09:52 Calm 2.50 Fog/Mist FEW003 BKN005 32 30 92% 29.97 1015.2
06 08:52 Vrbl 6 2.50 Fog/Mist OVC006 30.9 28.9 92% 26 29.96 1014.9
06 07:52 Calm 6.00 Fog/Mist SCT025 BKN032 BKN250 30 28 92% 29.95 1014.5
06 06:52 Calm 7.00 Mostly Cloudy FEW012 BKN026 30.9 28.9 30.9 28.9 92% 29.95 1014.5
06 05:52 Calm 7.00 Overcast SCT012 OVC026 30 28 92% 29.94 1014.0
06 04:52 Calm 7.00 Overcast SCT008 BKN012 OVC028 30 27 88% 29.93 1013.9
06 03:52 NW 3 7.00 Overcast BKN008 OVC017 30 28 92% 29.94 1014.2
06 02:52 NW 3 6.00 Fog/Mist BKN006 OVC017 30 28 92% 29.95 1014.5
06 01:52 Calm 3.00 Fog/Mist BKN006 OVC017 30 28 92% 29.96 1014.7
Date Time (est) Wind (mph) Vis. (mi.) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°F) Heat Index (°F) altimeter (in) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºF) Pressure Precipitation (in)