Weather observations for the past three days for
Washington/Dulles International Airport, DC
| 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) | |||||||||||||||