Washington Dulles International Airport

KIAD / IAD

Dulles, US

Last Updated
Apr 19, 02:52Z

Current Weather

Display Units
Fresh 7 min ago
02:52Z

🌙 Night
VFR
Flight Rules
19°C
Temperature
Dewpoint: 14°C
4 kt
160°
10 SM
Visibility
18,000 ft
Ceiling
Above Ground Level
1009 hPa
QNH
Altimeter Setting

Raw METAR

METAR KIAD 190252Z 16004KT 10SM FEW110 BKN180 BKN220 19/14 A2980 RMK AO2 SLP088 T01940139 50006 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 312 ft
FEW 11,000 ft AGL
BKN 18,000 ft AGL
BKN 22,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
11,000 ft
AGL (Above Ground)
11,312 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
18,000 ft
AGL (Above Ground)
18,312 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
22,000 ft
AGL (Above Ground)
22,312 ft AMSL

Weather Briefing

VFR

Washington Dulles International Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 18,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the south-southeast (160°) at 4 knots.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 18000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 19°C (66°F) with a dewpoint of 14°C, indicating moderate moisture conditions.

Forecast Outlook

The TAF forecast covers the next 30 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Light Showers Rain, Showers Rain, Mist. Winds are forecast to reach up to 22 knots during the period. Expect variable wind speeds ranging from 5 to 22 knots. There is a 30% probability of VFR conditions with Light Showers Rain between 03:00Z and 09:00Z. There is a 30% probability of MVFR conditions with Showers Rain, Mist between 09:00Z and 13:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1009 hPa
Sea Level Pressure
For altitude above MSL
QFE
999 hPa
Field Pressure
Height above aerodrome (312 ft)
Pressure Alt
440 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 995 ft
ISA Deviation: +4.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KIAD 182338Z 1900/2006 13013G24KT P6SM SCT150 BKN250 FM190100 12008G17KT P6SM BKN100 PROB30 1903/1909 09005KT 6SM -SHRA OVC050 FM190900 32017G26KT 6SM -SHRA SCT025 OVC050 PROB30 1909/1913 34022G35KT 4SM SHRA BR FM191300 32017G26KT 6SM -SHRA SCT025 OVC050 FM191600 32013G22KT P6SM BKN060 FM192200 31008G17KT P6SM SCT060
Upcoming Changes (Next 12 Hours)
02:58Z BASE
+0h
VFR 130° 13 kt
Visibility: >6SM
Ceiling: 25,000 ft
03:00Z PROB30
+1h
VFR 90° 5 kt
Visibility: 6SM
Ceiling: 5,000 ft
Light Showers Rain
09:00Z FM190900
+7h
VFR 320° 17 kt
Visibility: 6SM
Ceiling: 5,000 ft
Light Showers Rain
09:00Z PROB30
+7h
MVFR 340° 22 kt
Visibility: 4SM
Showers Rain, Mist

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
IAD
01L
19R
01C
19C
01R
19L ✈️
12
30

Runway Information

Runway Length Width Surface Heading Wind Component
01C/19C 11,501 ft 150 ft CONC-G
3.7 kt 1.4 kt
159° angle
01L/19R 9,400 ft 150 ft CON
3.7 kt 1.4 kt
159° angle
✈️ 01R/19L
Active: 19L
11,500 ft 150 ft CON
3.5 kt 2.0 kt
30° angle
12/30 10,501 ft 150 ft CON 110°
2.6 kt 3.1 kt
50° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KIAD

5,604 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
80.8%
MVFR
11%
IFR
5.2%
LIFR
2.9%

Washington Dulles International Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 80.8% of the time. Prevailing winds are from the S averaging 8 knots, with gusts recorded up to 41 knots. Calm conditions occur 16.5% of the time. Temperature extremes range from -16°C to 33°C, reflecting significant seasonal variation. The best months for VFR flying are January, April, November.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 8 kt
Maximum Recorded: 41 kt
Calm Winds: 16.5%
Direction Distribution:
N
13.8%
NE
4.8%
E
5.9%
SE
6.3%
S
20.9%
SW
5.7%
W
6.9%
NW
19.1%

Temperature Range

Average: 8.1°C
Range: -16°C to 33°C
-16°C 33°C

Visibility

Average: 9.4 SM
Below 3 SM: 1.5%
Fog Frequency: 1%

Best Months for VFR

January April November

Runway Wind Analysis

Runway 01C/19C
Favorable wind: 100%
Avg crosswind: 4.6 kt
Runway 01L/19R
Favorable wind: 100%
Avg crosswind: 4.6 kt
Runway 01R/19L
Favorable wind: 100%
Avg crosswind: 4.6 kt
Runway 12/30
Favorable wind: 100%
Avg crosswind: 4.6 kt

Statistics computed from 5,604 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Washington Dulles International Airport - Airport Information

Airport Details

ICAO Code: KIAD
IATA Code: IAD
Type: large airport
Status: active
Elevation: 312 ft MSL

Location

City: Dulles
Country: US
Latitude: 38.944500°
Longitude: -77.455803°
Time Zone: Etc/GMT+5

Runway Information

Runway 01C/19C
Length: 11,501 ft
Width: 150 ft
Surface: CONC-G
ILS: No
Runway 01L/19R
Length: 9,400 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 01R/19L
Length: 11,500 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 12/30
Length: 10,501 ft
Width: 150 ft
Surface: CON
ILS: No

About Washington Dulles International Airport

Overview

Washington Dulles International Airport serves as a critical international gateway for the Washington, D.C. metropolitan area. Located in Dulles, Virginia, the airport handles significant commercial and international air traffic, situated at an elevation of 312 feet mean sea level. Its strategic location provides essential air transportation infrastructure for the national capital region.

Flying Conditions

The airport's multi-runway configuration offers significant operational flexibility across different wind conditions. With four runways ranging from 9,400 to 11,501 feet in length, pilots can expect adaptable approach and departure options. The airport's elevation and geographic position suggest potential for variable wind patterns and seasonal meteorological transitions.

Notable Features

Dulles features three concrete runways (01L/19R, 01C/19C, 01R/19L) and one concrete/grooved runway (12/30), providing robust operational capabilities. The airport's coordinate location at 38.944500, -77.455803 places it in a region with complex terrain and potential airspace interactions characteristic of the mid-Atlantic coastal zone. Runway lengths exceeding 9,400 feet accommodate a wide range of aircraft types and operational requirements.

Approach Considerations

Pilots should anticipate multiple runway options based on prevailing wind conditions, with primary runways 01C/19C and 01R/19L offering the longest operational surfaces at 11,500 feet. The diverse runway configuration allows for flexible approach and departure strategies, particularly during challenging meteorological conditions. Standard instrument approach procedures will vary based on specific runway and wind vector interactions.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.