St. Louis Lambert International Airport

KSTL / STL

St Louis, US

Last Updated
Apr 21, 22:51Z

Current Weather

Display Units
Recent 55 min ago
22:51Z

🌙 Night
VFR
Flight Rules
27°C
Temperature
Dewpoint: 9°C
14 kt
220° G23 kt
10 SM
Visibility
Ceiling
Unlimited
1015 hPa
QNH
Altimeter Setting

Raw METAR

METAR KSTL 212251Z 22014G23KT 10SM FEW250 27/09 A2997 RMK AO2 PK WND 20027/2201 SLP145 T02720089 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 618 ft
FEW 25,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
25,000 ft
AGL (Above Ground)
25,618 ft AMSL

Weather Briefing

VFR

St. Louis Lambert International Airport is currently reporting visual flight rules (VFR) conditions with few clouds at 25,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the southwest (220°) at 14 knots with gusts to 23 knots. Runway 24 is favored with a 13-knot headwind and 5-knot crosswind component (gusting to 8 knots crosswind).

Visibility & Ceiling

Visibility is 10 SM. No ceiling exists. Cloud layers reported: few at 25,000 ft.

Temperature & Moisture

Temperature is 27°C (81°F) with a dewpoint of 9°C, indicating very dry conditions.

Forecast Outlook

The TAF forecast covers the next 26 hours. Conditions are expected to remain VFR throughout the forecast period.

Pilot Recommendations

Conditions are favorable for visual flight.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1015 hPa
Sea Level Pressure
For altitude above MSL
QFE
994 hPa
Field Pressure
Height above aerodrome (618 ft)
Pressure Alt
566 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,154 ft
ISA Deviation: +13.2°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KSTL 212136Z 2122/2224 22018G24KT P6SM SCT080 FM220100 23010KT P6SM SCT100 FM221500 24010KT P6SM BKN050
Upcoming Changes (Next 12 Hours)
23:46Z BASE
+0h
VFR 220° 18 kt
Visibility: >6SM
01:00Z FM220100
+2h
VFR 230° 10 kt
Visibility: >6SM

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
  • • Hover for exact values and timestamps
  • • Click legend items to toggle data series
  • • Zoom and pan for detailed analysis
  • • Units automatically converted to preferences
Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
STL
06
24 ✈️
11
29
12L
30R
12R
30L

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06/24
Active: 24
7,600 ft 150 ft CON 63°
13.2 kt 4.8 kt
20° angle
11/29 9,000 ft 150 ft CON 122°
1.9 kt 13.9 kt
98° angle
12L/30R 9,013 ft 150 ft CON 122°
1.9 kt 13.9 kt
98° angle
12R/30L 11,020 ft 150 ft CON 122°
1.9 kt 13.9 kt
98° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KSTL

6,101 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
75.5%
MVFR
13.2%
IFR
7%
LIFR
4.3%

St. Louis Lambert International Airport typically experiences VFR conditions 75.5% of the time, though instrument-rated pilots will find IFR weather present approximately 11.3% of observations. Prevailing winds are from the S averaging 8.8 knots. Temperature extremes range from -20°C to 36°C, reflecting significant seasonal variation. The best months for VFR flying are February, September, October.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 8.8 kt
Maximum Recorded: 30 kt
Calm Winds: 10%
Direction Distribution:
N
9.4%
NE
5.4%
E
12%
SE
11.3%
S
15.7%
SW
9%
W
14.6%
NW
12.6%

Temperature Range

Average: 9.4°C
Range: -20°C to 36°C
-20°C 36°C

Visibility

Average: 9.2 SM
Below 3 SM: 1.7%
Fog Frequency: 1.8%

Best Months for VFR

February September October

Runway Wind Analysis

Runway 06/24
Favorable wind: 100%
Avg crosswind: 6.2 kt
Runway 11/29
Favorable wind: 100%
Avg crosswind: 5 kt
Runway 12L/30R
Favorable wind: 100%
Avg crosswind: 4.8 kt
Runway 12R/30L
Favorable wind: 100%
Avg crosswind: 4.8 kt

Statistics computed from 6,101 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

St. Louis Lambert International Airport - Airport Information

Airport Details

ICAO Code: KSTL
IATA Code: STL
Type: large airport
Status: active
Elevation: 618 ft MSL

Location

City: St Louis
Country: US
Latitude: 38.748697°
Longitude: -90.370003°
Time Zone: Etc/GMT+6

Runway Information

Runway 06/24
Length: 7,600 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 11/29
Length: 9,000 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 12L/30R
Length: 9,013 ft
Width: 150 ft
Surface: CON
ILS: No
Runway 12R/30L
Length: 11,020 ft
Width: 150 ft
Surface: CON
ILS: No

About St. Louis Lambert International Airport

Overview

St. Louis Lambert International Airport serves as a major commercial airport located in the metropolitan area of St. Louis, Missouri. Situated at an elevation of 618 feet mean sea level, the airport is a critical transportation hub for the region. Its four substantial concrete runways demonstrate substantial capacity for commercial and general aviation operations.

Flying Conditions

The airport's four runways ranging from 7,600 to 11,020 feet provide flexibility for diverse aircraft types across varying weather conditions. Located at coordinates 38.748697, -90.370003, the airport experiences typical Midwestern weather patterns with potential seasonal wind variations. Pilots should anticipate potential crosswind scenarios given the multiple runway orientations.

Notable Features

St. Louis Lambert International features four parallel and perpendicular runway configurations, offering multiple approach and departure options. The longest runway (12R/30L) extends 11,020 feet, accommodating large commercial aircraft and providing significant operational flexibility. The airport's diverse runway layout enables efficient air traffic management across different wind conditions.

Approach Considerations

Runway selection will depend on prevailing wind direction, with options spanning 06/24, 11/29, 12L/30R, and 12R/30L. The substantial runway lengths provide considerable margins for various aircraft performance envelopes. Pilots should carefully assess current meteorological conditions and wind vectors when planning approaches to maximize safety and operational efficiency.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.