St. Louis Lambert International Airport

KSTL / STL

St Louis, US

Current TAF Forecast

Raw TAF:
TAF KSTL 171728Z 1718/1824 28015G23KT P6SM SCT025 OVC035 TEMPO 1718/1719 -SN OVC025 FM180300 28009KT P6SM SCT060 FM181200 24006KT P6SM FEW250

Detailed TAF Table

Parameter
Sat
18:00Z
+-1h
Sat
19:00Z
+0h
Sat
20:00Z
+1h
Sat
21:00Z
+2h
Sat
22:00Z
+3h
Sat
23:00Z
+4h
Sun
00:00Z
+5h
Sun
01:00Z
+6h
Sun
02:00Z
+7h
Sun
03:00Z
+8h
Sun
04:00Z
+9h
Sun
05:00Z
+10h
Sun
06:00Z
+11h
Sun
07:00Z
+12h
Sun
08:00Z
+13h
Sun
09:00Z
+14h
Sun
10:00Z
+15h
Sun
11:00Z
+16h
Sun
12:00Z
+17h
Sun
13:00Z
+18h
Sun
14:00Z
+19h
Sun
15:00Z
+20h
Sun
16:00Z
+21h
Sun
17:00Z
+22h
Sun
18:00Z
+23h
Sun
19:00Z
+24h
Sun
20:00Z
+25h
Sun
21:00Z
+26h
Sun
22:00Z
+27h
Wind Dir
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
280°
W
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
280°
W
280°
W
280°
W
280°
W
280°
W
Wind Speed
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
9kt
G23kt
9kt
G23kt
9kt
G23kt
9kt
G23kt
9kt
G23kt
9kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
6kt
G23kt
6kt
G23kt
6kt
G23kt
6kt
G23kt
6kt
G23kt
6kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
15kt
G23kt
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
>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
☀️ Clear
Clouds
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT060
SCT060
SCT060
SCT060
SCT060
SCT060
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
FEW250
FEW250
FEW250
FEW250
FEW250
FEW250
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
SCT025
OVC035
Ceiling
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
3500ft
AGL
3500ft
AGL
3500ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
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 VFR
Day/Night
🌙
Night
🌇 16:52
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 07:06
🌙
Night
🌅 07:06
🌅
Dawn
🌅 07:06
☀️
Day
🌅 07:06
☀️
Day
🌅 07:06
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:53
☀️
Day
🌇 16:53
☀️
Day
🌇 16:53
🌇
Dusk
🌇 16:53
🌙
Night
🌇 16:53
🌙
Night
🌙
Night
🌙
Night
🌙
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
280° at 15 kt
Gusts: 23 kt
Visibility
>6SM
Clouds
SCT025 OVC035
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (280°) at 15kt. Gusts up to 23kt are expected. Visibility will be excellent at more than 6SM. Scattered clouds at 2500 feet, Overcast skies at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2026-02-17 18:00:00 - 2026-01-17 19:00:00
MVFR
Weather
Light Snow
Clouds
OVC025
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Weather conditions: Light Snow. Overcast skies at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM180300 2026-01-18 03:00:00 - 2026-01-18 09:00:00
VFR
Wind
280° at 9 kt
Visibility
>6SM
Clouds
SCT060
📖 Plain English Explanation:

Winds from the West (280°) at 9kt. Visibility will be excellent at more than 6SM. Scattered clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM181200 2026-01-18 12:00:00 - 2026-01-18 18:00:00
VFR
Wind
240° at 6 kt
Visibility
>6SM
Clouds
FEW250
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 6kt. Visibility will be excellent at more than 6SM. Few clouds at 25000 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.