Sankt Gallen Altenrhein Airport

LSZR / ACH

St. Gallen, CH

Last Updated
May 14, 15:20Z

Current Weather

Display Units
Fresh 13 min ago
15:20Z

☀️ Day
VFR
Flight Rules
11°C
Temperature
Dewpoint: 7°C
6 kt
110°
10+ km
Visibility
Ceiling
Unlimited
1000 hPa
QNH
Altimeter Setting

Raw METAR

METAR LSZR 141520Z 11006KT 060V160 9999 SCT035 11/07 Q1000 RMK J

Clouds - Visual Profile

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

Weather Briefing

VFR

Sankt Gallen Altenrhein Airport is currently reporting visual flight rules (VFR) conditions with scattered clouds at 3,500 feet and 10 miles or greater visibility.

Wind Analysis

Winds are from the east-southeast (110°) at 6 knots. Runway 10/28 is favored with a 6-knot headwind and 1-knot crosswind component.

Visibility & Ceiling

Visibility is unrestricted. No ceiling exists. Cloud layers reported: scattered at 3,500 ft.

Temperature & Moisture

Temperature is 11°C (52°F) with a dewpoint of 7°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.

Forecast Outlook

The TAF forecast covers the next 9 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Showers Rain. There is a 40% probability of MVFR conditions with Showers Rain between 17:00Z and 20:00Z. There is a 30% probability of VFR conditions with Showers Rain between 20:00Z and 00:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

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

QNH
1000 hPa
Sea Level Pressure
For altitude above MSL
QFE
956 hPa
Field Pressure
Height above aerodrome (1,306 ft)
Pressure Alt
1,704 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,537 ft
ISA Deviation: -1.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF LSZR 141425Z 1415/1424 VRB02KT 9999 SCT050 PROB40 TEMPO 1417/1420 28012KT SHRA SCT040TCU PROB30 TEMPO 1420/1424 SHRA
Upcoming Changes (Next 12 Hours)
15:32Z BASE
+0h
VFR VRB 2 kt
Visibility: 10+ km
17:00Z PROB40 TEMPO
+2h
MVFR 280° 12 kt
Showers Rain
20:00Z PROB30 TEMPO
+5h
VFR
Showers Rain

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
SZR
-
-
10 ✈️
28
10G ✈️
28G

Runway Information

Runway Length Width Surface Heading Wind Component
-/- 0 ft 0 ft
2.1 kt 5.6 kt
110° angle
✈️ 10/28
Active: 10
4,774 ft 98 ft ASPH 99°
5.9 kt 1.0 kt
10° angle
✈️ 10G/28G
Active: 10G
2,657 ft 65 ft GRASS 99°
5.9 kt 1.0 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - LSZR

11,049 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
62.4%
MVFR
18.6%
IFR
10.2%
LIFR
8.9%

Sankt Gallen Altenrhein Airport typically experiences VFR conditions 62.4% of the time, though instrument-rated pilots will find IFR weather present approximately 19.1% 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 26°C, reflecting significant seasonal variation. The best months for VFR flying are May, April, September.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 4.9 kt
Maximum Recorded: 33 kt
Calm Winds: 1.1%
Direction Distribution:
N
5.6%
NE
4.6%
E
20.1%
SE
7.3%
S
5.3%
SW
10.2%
W
35.6%
NW
10.2%

Temperature Range

Average: 6.7°C
Range: -12°C to 26°C
-12°C 26°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 7.3%

Best Months for VFR

May April September

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 11,049 METAR observations (Sep 2025 - May 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.