St. Louis Lambert International Airport

KSTL / STL

St Louis, US

Current TAF Forecast

Raw TAF:
TAF KSTL 220055Z 2201/2306 22012KT P6SM SCT100 FM221500 24010KT P6SM BKN040 FM222100 22012KT P6SM SCT050

Detailed TAF Table

Parameter
Wed
01:00Z
+-1h
Wed
02:00Z
+0h
Wed
03:00Z
+1h
Wed
04:00Z
+2h
Wed
05:00Z
+3h
Wed
06:00Z
+4h
Wed
07:00Z
+5h
Wed
08:00Z
+6h
Wed
09:00Z
+7h
Wed
10:00Z
+8h
Wed
11:00Z
+9h
Wed
12:00Z
+10h
Wed
13:00Z
+11h
Wed
14:00Z
+12h
Wed
15:00Z
+13h
Wed
16:00Z
+14h
Wed
17:00Z
+15h
Wed
18:00Z
+16h
Wed
19:00Z
+17h
Wed
20:00Z
+18h
Wed
21:00Z
+19h
Wed
22:00Z
+20h
Wed
23:00Z
+21h
Thu
00:00Z
+22h
Thu
01:00Z
+23h
Thu
02:00Z
+24h
Thu
03:00Z
+25h
Thu
04:00Z
+26h
Wind Dir
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
Wind Speed
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 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
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
SCT100
BKN040
BKN040
BKN040
BKN040
BKN040
BKN040
SCT050
SCT050
SCT050
SCT050
SCT050
SCT050
SCT100
SCT100
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
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
🌙
Night
🌙
Night
🌙
Night
🌅 05:22Z
🌙
Night
🌅 05:22Z
🌅
Dawn
🌅 05:22Z
☀️
Day
🌅 05:22Z
☀️
Day
🌅 05:22Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:37Z
☀️
Day
🌇 18:37Z
☀️
Day
🌇 18:37Z
🌇
Dusk
🌇 18:37Z
🌙
Night
🌇 18:37Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:21Z
🌙
Night
🌅 05:21Z
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
220° at 12 kt
Visibility
>6SM
Clouds
SCT100
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 12 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM221500 15:00Z - 21:00Z
VFR
Wind
240° at 10 kt
Visibility
>6SM
Clouds
BKN040
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 10 kt. Visibility will be excellent at more than 6SM. Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM222100 21:00Z - 03:00Z
VFR
Wind
220° at 12 kt
Visibility
>6SM
Clouds
SCT050
📖 Plain English Explanation:

Winds from the Southwest (220°) at 12 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 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.