KIAD TAF

Terminal aerodrome forecast for Washington Dulles International (IAD · KIAD), Washington, DC. Issued 5 Nov 2026 2101Z, valid 2100Z to 0000Z, decoded period by period below. · Open on the map

All of Washington Dulles International — runways, frequencies, charts and live weather

TAF issued 5 Nov 2026 2101Z

valid 2100Z to 0000Z

TAF KIAD 052101Z 0521/0624 17010KT P6SM BKN025 OVC050 FM052300 20004KT P6SM SCT020 OVC035 PROB30 0600/0606 4SM -SHRA BR OVC020 FM060600 36003KT 5SM -DZ BR BKN008 OVC020 FM061400 36006KT P6SM BKN020 OVC035 FM061800 35003KT P6SM SCT040

Times are UTC (Zulu), as they appear in the bulletin.

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
2100Z to 2300Z	Initial	170° at 10 kt	6+ SM	2,500 ft BKN	Broken at 2,500 ft AGL, Overcast at 5,000 ft AGL	MVFR

2300Z to 0600Z	FM	200° at 4 kt	6+ SM	3,500 ft OVC	Scattered at 2,000 ft AGL, Overcast at 3,500 ft AGL	VFR

0000Z to 0600Z	PROB	No change	4 SM	2,000 ft OVC	Overcast at 2,000 ft AGL	MVFR

0600Z to 1400Z	FM	360° at 3 kt	5 SM	800 ft BKN	Broken at 800 ft AGL, Overcast at 2,000 ft AGL	IFR

1400Z to 1800Z	FM	360° at 6 kt	6+ SM	2,000 ft BKN	Broken at 2,000 ft AGL, Overcast at 3,500 ft AGL	MVFR

1800Z to 0000Z	FM	350° at 3 kt	6+ SM	Clear	Scattered at 4,000 ft AGL	VFR

What the change groups mean

FM: From — a rapid, permanent change to the conditions that follow.

What the categories mean

MVFR: Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
VFR: Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
IFR: Instrument flight rules — ceiling 500 to 999 ft and/or visibility 1 to less than 3 SM.

Frequently asked

What is the current TAF for KIAD?

The forecast issued 5 Nov 2026 2101Z for Washington Dulles International reads: TAF KIAD 052101Z 0521/0624 17010KT P6SM BKN025 OVC050 FM052300 20004KT P6SM SCT020 OVC035 PROB30 0600/0606 4SM -SHRA BR OVC020 FM060600 36003KT 5SM -DZ BR BKN008 OVC020 FM061400 36006KT P6SM BKN020 OVC035 FM061800 35003KT P6SM SCT040

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.

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