KIAD TAF
Terminal aerodrome forecast for Washington Dulles International Airport (IAD · KIAD), Dulles, VA. Issued 6 Aug 2026 2330Z, valid 0000Z to 0600Z, decoded period by period below.
All of Washington Dulles International Airport — runways, frequencies, charts and live weatherTAF issued 6 Aug 2026 2330Z
valid 0000Z to 0600ZTAF KIAD 062330Z 0700/0806 22009KT P6SM -SHRA VCTS BKN040CB FM070130 00000KT P6SM BKN070 FM071500 22003KT P6SM FEW080 FM071800 21007KT P6SM SCT070 PROB30 0720/0724 4SM -TSRA BKN040CB FM080000 23003KT P6SM BKN110
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0000Z to 0130Z | Initial | 220° at 9 kt | 6+ SM | 4,000 ft BKN | Broken at 4,000 ft AGL | VFR |
| 0130Z to 1500Z | FM | 000° at 0 kt | 6+ SM | 7,000 ft BKN | Broken at 7,000 ft AGL | VFR |
| 1500Z to 1800Z | FM | 220° at 3 kt | 6+ SM | Clear | Few at 8,000 ft AGL | VFR |
| 1800Z to 0000Z | FM | 210° at 7 kt | 6+ SM | Clear | Scattered at 7,000 ft AGL | VFR |
| 2000Z to 0000Z | PROB | Calm | 4 SM | 4,000 ft BKN | Broken at 4,000 ft AGL | MVFR |
| 0000Z to 0600Z | FM | 230° at 3 kt | 6+ SM | 11,000 ft BKN | Broken at 11,000 ft AGL | VFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- VFR
- Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
- MVFR
- Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
Frequently asked
What is the current TAF for KIAD?
The forecast issued 6 Aug 2026 2330Z for Washington Dulles International Airport reads: TAF KIAD 062330Z 0700/0806 22009KT P6SM -SHRA VCTS BKN040CB FM070130 00000KT P6SM BKN070 FM071500 22003KT P6SM FEW080 FM071800 21007KT P6SM SCT070 PROB30 0720/0724 4SM -TSRA BKN040CB FM080000 23003KT P6SM BKN110
How far ahead does a TAF forecast?
A TAF covers a 24-hour period at most airports and 30 hours at larger ones, issued four times a day at 0000Z, 0600Z, 1200Z and 1800Z. It describes conditions within roughly 5 statute miles of the airport, not the surrounding area.
What do FM, BECMG and TEMPO mean?
FM (from) marks a rapid, permanent change at the stated time. BECMG (becoming) marks a gradual change over the stated window. TEMPO marks conditions expected for less than half the period, in spells of under an hour each. PROB30 and PROB40 give the probability of the conditions that follow.
More about KIAD
Forecasts from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.