St. Louis Lambert International Airport

KSTL / STL

St Louis, US

Current TAF Forecast

Raw TAF:
TAF KSTL 151120Z 1512/1618 VRB04KT P6SM SCT060 FM151500 30008KT P6SM FEW060 FM160200 21005KT P6SM FEW250 FM161600 25010G18KT P6SM VCSH FEW060 BKN100

Detailed TAF Table

Parameter
Mon
13:00Z
+-1h
Mon
14:00Z
+0h
Mon
15:00Z
+1h
Mon
16:00Z
+2h
Mon
17:00Z
+3h
Mon
18:00Z
+4h
Mon
19:00Z
+5h
Mon
20:00Z
+6h
Mon
21:00Z
+7h
Mon
22:00Z
+8h
Mon
23:00Z
+9h
Tue
00:00Z
+10h
Tue
01:00Z
+11h
Tue
02:00Z
+12h
Tue
03:00Z
+13h
Tue
04:00Z
+14h
Tue
05:00Z
+15h
Tue
06:00Z
+16h
Tue
07:00Z
+17h
Tue
08:00Z
+18h
Tue
09:00Z
+19h
Tue
10:00Z
+20h
Tue
11:00Z
+21h
Tue
12:00Z
+22h
Tue
13:00Z
+23h
Tue
14:00Z
+24h
Tue
15:00Z
+25h
Tue
16:00Z
+26h
Wind Dir
VRB
VRB
300°
NW
300°
NW
300°
NW
300°
NW
300°
NW
300°
NW
VRB
VRB
VRB
VRB
VRB
210°
SW
210°
SW
210°
SW
210°
SW
210°
SW
210°
SW
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
250°
W
Wind Speed
4 kt
4 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
4 kt
4 kt
4 kt
4 kt
4 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
10 kt
G18 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
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
☀️ Clear
☀️ Clear
Clouds
SCT060
SCT060
FEW060
FEW060
FEW060
FEW060
FEW060
FEW060
SCT060
SCT060
SCT060
SCT060
SCT060
FEW250
FEW250
FEW250
FEW250
FEW250
FEW250
SCT060
SCT060
SCT060
SCT060
SCT060
SCT060
SCT060
SCT060
FEW060
BKN100
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
10,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:14Z
☀️
Day
🌇 19:14Z
☀️
Day
🌇 19:14Z
🌙
Night
🌇 19:14Z
🌙
Night
🌇 19:14Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:45Z
🌙
Night
🌅 04:45Z
🌙
Night
🌅 04:45Z
☀️
Day
🌅 04:45Z
☀️
Day
🌅 04:45Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
SCT060
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM151500 15:00Z - 21:00Z
VFR
Wind
300° at 8 kt
Visibility
>6SM
Clouds
FEW060
📖 Plain English Explanation:

Winds from the West-Northwest (300°) at 8 kt. Visibility will be excellent at more than 6SM. Few clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM160200 02:00Z - 08:00Z
VFR
Wind
210° at 5 kt
Visibility
>6SM
Clouds
FEW250
📖 Plain English Explanation:

Winds from the South-Southwest (210°) at 5 kt. Visibility will be excellent at more than 6SM. Few clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM161600 16:00Z - 22:00Z
VFR
Wind
250° at 10 kt
Gusts: 18 kt
Visibility
>6SM
Clouds
FEW060 BKN100
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 10 kt. Gusts up to 18 kt are expected. Visibility will be excellent at more than 6SM. Few clouds at 6000 feet, Broken clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

📚 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.