London Heathrow Airport

EGLL / LHR

London, GB

Current TAF Forecast

Raw TAF:
TAF EGLL 171659Z 1718/1824 34008KT 9999 FEW048 BECMG 1719/1722 05010KT PROB30 TEMPO 1801/1807 BKN012

Detailed TAF Table

Parameter
Fri
21:00Z
+-1h
Fri
22:00Z
+0h
Fri
23:00Z
+1h
Sat
00:00Z
+2h
Sat
01:00Z
+3h
Sat
02:00Z
+4h
Sat
03:00Z
+5h
Sat
04:00Z
+6h
Sat
05:00Z
+7h
Sat
06:00Z
+8h
Sat
07:00Z
+9h
Sat
08:00Z
+10h
Sat
09:00Z
+11h
Sat
10:00Z
+12h
Sat
11:00Z
+13h
Sat
12:00Z
+14h
Sat
13:00Z
+15h
Sat
14:00Z
+16h
Sat
15:00Z
+17h
Sat
16:00Z
+18h
Sat
17:00Z
+19h
Sat
18:00Z
+20h
Sat
19:00Z
+21h
Sat
20:00Z
+22h
Sat
21:00Z
+23h
Sat
22:00Z
+24h
Wind Dir
340°
N
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
50°
NE
Wind Speed
8 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW048
☀️ CLR
☀️ CLR
☀️ CLR
BKN012
BKN012
BKN012
BKN012
BKN012
BKN012
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌇 19:25Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:35Z
🌙
Night
🌅 04:35Z
🌙
Night
🌅 04:35Z
☀️
Day
🌅 04:35Z
☀️
Day
🌅 04:35Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:24Z
☀️
Day
🌇 19:24Z
☀️
Day
🌇 19:24Z
🌙
Night
🌇 19:24Z
🌙
Night
🌇 19:24Z
🌙
Night
Flight Rules
VFR: Visual Flight Rules
MVFR: Marginal VFR
IFR: Instrument Flight Rules
LIFR: Low IFR
Ceiling Colors
Red: < 500ft
Amber: 500-1000ft
Blue: 1000-3000ft
Green: > 3000ft
⛈️ TCU: Towering Cumulus
🌩️ CB: Cumulonimbus
+Nh: Hours from now • %: Probability of occurrence • AGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
340° at 8 kt
Visibility
10+ km
Clouds
FEW048
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northwest (340°) at 8 kt. Visibility will be excellent at 10+ km. Few clouds at 4800 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 19:00Z - 22:00Z
VFR
Wind
50° at 10 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the Northeast (50°) at 10 kt. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 TEMPO 01:00Z - 07:00Z
MVFR
Clouds
BKN012
📖 Plain English Explanation:

There is a 30% probability of: Broken clouds at 1200 feet. Marginal VFR conditions - some restrictions for visual flying.

📚 Understanding TAF Forecasts

Terminal Aerodrome Forecast (TAF) provides detailed weather forecasts specifically for aviation operations. Our system translates complex meteorological codes into plain English to help pilots of all experience levels understand forecasted conditions.

What TAF Includes:

  • • Wind direction, speed, and gusts
  • • Visibility in statute miles or kilometers
  • • Weather phenomena (rain, snow, fog, thunderstorms)
  • • Cloud coverage types and altitudes
  • • Forecast changes with timing
  • • Flight rules categories (VFR/IFR)

Change Indicators Explained:

  • • BASE - Main forecast conditions
  • • FM - Permanent change from specific time
  • • BECMG - Gradual change over 2-4 hours
  • • TEMPO - Temporary changes (less than 1 hour)
  • • PROB30/40 - 30% or 40% probability

🛩️ Flight Rules Categories

VFR

Visual Flight Rules

  • • Ceiling ≥ 3000 ft
  • • Visibility ≥ 5 miles
  • • Good for visual flying

MVFR

Marginal VFR

  • • Ceiling 1000-3000 ft
  • • Visibility 3-5 miles
  • • Caution for VFR

IFR

Instrument Flight Rules

  • • Ceiling 500-1000 ft
  • • Visibility 1-3 miles
  • • Instruments required

LIFR

Low IFR

  • • Ceiling < 500 ft
  • • Visibility < 1 mile
  • • Challenging conditions

💡 TAF Reading Tips

For Student Pilots:

  • • Focus on the plain English explanations above
  • • Pay attention to flight rules categories
  • • Look for wind direction relative to runway headings
  • • Check for temporary conditions (TEMPO)

For Experienced Pilots:

  • • Cross-reference with raw TAF for precise timing
  • • Consider probability forecasts for alternate planning
  • • Monitor BECMG periods for gradual changes
  • • Always check current METAR vs TAF forecast

Important: TAF forecasts should always be supplemented with current METAR observations, PIREPs, and other weather information for complete situational awareness. Weather can change rapidly, and forecasts have inherent limitations.