Sankt Gallen Altenrhein Airport

LSZR / ACH

St. Gallen, CH

Last Updated
Jun 9, 21:50Z

Current Weather

Display Units
Fresh 5 min ago
21:50Z

🌙 Night
VFR
Flight Rules
13°C
Temperature
Dewpoint: 12°C
3 kt
130°
10+ km
Visibility
7,500 ft
Ceiling
Above Ground Level
--
QNH
Altimeter Setting

Raw METAR

METAR LSZR 092150Z AUTO 13003KT 100V180 9999 -RA SCT065 BKN075 13/12 Q1019

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 1,306 ft
SCT 6,500 ft AGL
BKN 7,500 ft AGL
SCT
Scattered (3/8-4/8 sky coverage)
6,500 ft
AGL (Above Ground)
7,806 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
7,500 ft
AGL (Above Ground)
8,806 ft AMSL

Weather Briefing

VFR

Sankt Gallen Altenrhein Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 7,500 feet and 10 miles or greater visibility.

Wind Analysis

Winds are from the southeast (130°) at 3 knots.

Visibility & Ceiling

Visibility is unrestricted. The ceiling is 7500 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 13°C (55°F) with a dewpoint of 12°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 9 hours. Conditions are expected to remain VFR throughout the forecast period.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours.

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

Forecast (TAF)

View Full TAF
Raw TAF
TAF LSZR 091425Z 0915/0924 11004KT 9999 BKN030
Upcoming Changes (Next 12 Hours)
21:54Z BASE
+0h
VFR 110° 4 kt
Visibility: 10+ km
Ceiling: 3,000 ft

24-Hour Weather Evolution

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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
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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
SZR
-
-
10 ✈️
28
10G ✈️
28G

Runway Information

Runway Length Width Surface Heading Wind Component
-/- 0 ft 0 ft
1.9 kt 2.3 kt
130° angle
✈️ 10/28
Active: 10
4,774 ft 98 ft ASPH 99°
2.6 kt 1.5 kt
30° angle
✈️ 10G/28G
Active: 10G
2,657 ft 65 ft GRASS 99°
2.6 kt 1.5 kt
30° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - LSZR

12,247 observations | Sep 2025 - Jun 2026

Flight Rules Distribution

VFR
65.8%
MVFR
16.9%
IFR
9.3%
LIFR
8%

Sankt Gallen Altenrhein Airport typically experiences VFR conditions 65.8% of the time, though instrument-rated pilots will find IFR weather present approximately 17.3% of observations. Prevailing winds are from the W averaging 4.9 knots, with gusts recorded up to 33 knots. Temperature extremes range from -12°C to 30°C, reflecting significant seasonal variation. The best months for VFR flying are June, May, April.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 4.9 kt
Maximum Recorded: 33 kt
Calm Winds: 1.1%
Direction Distribution:
E
19.4%
N
5.4%
S
5.7%
W
36.1%
NE
4.6%
NW
10.5%
SE
7.2%
SW
10%

Temperature Range

Average: 7.7°C
Range: -12°C to 30°C
-12°C 30°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 6.7%

Best Months for VFR

June May April

Runway Wind Analysis

Runway 10/28
Favorable wind: 100%
Avg crosswind: 1.9 kt
Runway 10G/28G
Favorable wind: 100%
Avg crosswind: 1.9 kt

Statistics computed from 12,247 METAR observations (Sep 2025 - Jun 2026). Data sourced from official aviation weather services. Updated daily.

Sankt Gallen Altenrhein Airport - Airport Information

Airport Details

ICAO Code: LSZR
IATA Code: ACH
Type: medium airport
Status: active
Elevation: 1,306 ft MSL

Location

City: St. Gallen
Country: CH
Latitude: 47.485001°
Longitude: 9.560770°
Time Zone: Europe/Brussels

Runway Information

Runway -/-
Length: 0 ft
Width: 0 ft
Surface:
ILS: No
Runway 10/28
Length: 4,774 ft
Width: 98 ft
Surface: ASPH
ILS: No
Runway 10G/28G
Length: 2,657 ft
Width: 65 ft
Surface: GRASS
ILS: No

About Sankt Gallen Altenrhein Airport

Overview

Sankt Gallen Altenrhein Airport serves the St. Gallen region in northeastern Switzerland, positioned at an elevation of 1,306 feet MSL. The airport features two runways: a 4,774-foot paved runway (10/28) and a 2,657-foot grass runway (10G/28G), supporting various general aviation and regional operations in the area.

Flying Conditions

Weather conditions at LSZR demonstrate significant variability, with VFR conditions predominating at 53% of observations. Pilots can expect moderate wind conditions, with a prevailing westerly wind at an average of 4.7 knots and occasional gusts up to 29 knots. Temperature ranges from -12°C to 26°C, with an average of 6°C, suggesting potential for significant seasonal temperature fluctuations.

Notable Features

The airport's dual runway configuration, including both paved and grass surfaces, offers operational flexibility for different aircraft types. Both runways show 100% favorable wind alignment and minimal average crosswind of 1.9 knots. The airport experiences fog in approximately 9% of observations, which pilots should consider during planning.

Approach Considerations

September through November represent the most consistent VFR flying months, offering optimal visual conditions. Runway selection can be straightforward due to the consistent wind patterns, with both 10/28 and 10G/28G having identical favorable wind characteristics. Pilots should be prepared for potential reduced visibility, particularly during the 12.4% of observations under LIFR conditions.

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.