Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
VFRSt Louis Regional Airport is currently reporting visual flight rules (VFR) conditions with scattered clouds at 6,500 feet and 10 SM visibility.
Wind Analysis
Winds are from the west-southwest (240°) at 14 knots with gusts to 22 knots. Runway 29 is favored with a 9-knot headwind and 11-knot crosswind component (gusting to 17 knots crosswind).
Visibility & Ceiling
Visibility is 10 SM. No ceiling exists. Cloud layers reported: scattered at 6,500 ft.
Temperature & Moisture
Temperature is 24°C (75°F) with a dewpoint of 20°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.
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.
24-Hour Weather Evolution
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 11/29
Active: 29
|
8,101 ft | 150 ft | ASP | 113° |
↑ 9.0 kt
•
↔ 10.7 kt
50° angle
|
| 17/35 | 6,500 ft | 100 ft | ASP | 173° |
↑ 5.5 kt
•
↔ 12.9 kt
67° angle
|
Weather Statistics - KALN
11,791 observations | Sep 2025 - Jul 2026Flight Rules Distribution
St Louis Regional Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 81.8% of the time. Prevailing winds are from the S averaging 8.3 knots, with gusts recorded up to 99 knots. Calm conditions occur 18.3% of the time. Temperature extremes range from -22°C to 36°C, reflecting significant seasonal variation. The best months for VFR flying are July, April, September.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 11,791 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.
St Louis Regional Airport - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About St Louis Regional Airport
Overview
St Louis Regional Airport serves the Alton/St Louis metropolitan area as a medium-sized airport situated at 544 feet above mean sea level. Located at coordinates 38.890301, -90.045998, the airport provides critical aviation infrastructure for the regional transportation network with two substantial asphalt runways supporting diverse aircraft operations.
Flying Conditions
The airport experiences predominantly favorable flying conditions, with visual flight rules (VFR) conditions present 76.7% of the time. Temperature ranges from -16°C to 36°C create varied operational environments, while wind patterns are consistently southerly at an average of 8.4 knots with occasional gusts up to 50 knots. September, October, and January demonstrate the most consistent VFR weather patterns.
Notable Features
Both primary runways (11/29 and 17/35) offer extended lengths suitable for multiple aircraft types, with Runway 11/29 providing 8,101 feet and Runway 17/35 offering 6,500 feet of asphalt surface. Wind data indicates 100% favorable wind conditions for both runways, with modest average crosswind components of 4.6 and 5 knots respectively. Visibility averages 9.3 statute miles, with minimal instances of restricted visual conditions.
Approach Considerations
Pilots should anticipate predominantly southern wind patterns when planning approaches, with calm conditions occurring 14.4% of the time. Instrument meteorological conditions (IFR, MVFR) represent approximately 23.3% of observations, suggesting periodic need for instrument approach capabilities. The airport's elevation and consistent wind characteristics provide generally predictable approach conditions across seasons.
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.
Learn More
Recommended guides based on current conditions at KALN
Official Data Sources
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.