Sankt Gallen Altenrhein Airport

LSZR / ACH

St. Gallen, CH

Last Updated
Mar 4, 09:20Z

Current Weather

Display Units
Fresh 22 min ago
09:20Z

☀️ Day
LIFR
Flight Rules
2°C
Temperature
Dewpoint: 2°C
3 kt
270°
2.2 km
Visibility
300 ft
Ceiling
Above Ground Level
1028 hPa
QNH
Altimeter Setting

Raw METAR

METAR LSZR 040920Z 27003KT 220V310 2200 BR OVC003 02/02 Q1028 RMK U

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 1,306 ft
OVC 300 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
300 ft
AGL (Above Ground)
1,606 ft AMSL
QNH
1028 hPa
Sea Level Pressure
For altitude above MSL
QFE
984 hPa
Field Pressure
Height above aerodrome (1,306 ft)
Pressure Alt
864 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -383 ft
ISA Deviation: -10.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF LSZR 040825Z 0409/0418 VRB02KT 0200 FG VV001 BECMG 0409/0411 2000 BKN003 BECMG 0411/0413 CAVOK
Upcoming Changes (Next 12 Hours)
09:41Z BASE
+0h
LIFR VRB 2 kt
Visibility: 0.2 km
Ceiling: 100 ft
Fog
11:00Z BECMG
+2h
VFR
Visibility: >10km

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
0.0 kt 3.0 kt
90° angle
✈️ 10/28
Active: 28
4,774 ft 98 ft ASPH 99°
3.0 kt 0.5 kt
10° angle
✈️ 10G/28G
Active: 28G
2,657 ft 65 ft GRASS 99°
3.0 kt 0.5 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

7,745 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
53.5%
MVFR
21.6%
IFR
12.9%
LIFR
12%

Sankt Gallen Altenrhein Airport is frequently affected by reduced visibility conditions, with VFR weather only 53.5% of the time and IFR/LIFR conditions occurring in 24.9% of observations. Prevailing winds are from the W averaging 4.8 knots. Temperature extremes range from -12°C to 26°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, February.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 4.8 kt
Maximum Recorded: 29 kt
Calm Winds: 1.2%
Direction Distribution:
N
5.5%
NE
4.1%
E
25.1%
SE
8.6%
S
5%
SW
9.9%
W
30.7%
NW
9.8%

Temperature Range

Average: 5.6°C
Range: -12°C to 26°C
-12°C 26°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 8.8%

Best Months for VFR

September October February

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 7,745 METAR observations (Sep 2025 - Mar 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.