Antonio B. Won Pat International Airport

PGUM / GUM

Hagåtña, GU

Last Updated
Jul 4, 11:16Z

Current Weather

Display Units
Recent 40 min ago
11:16Z

☀️ Day
VFR
Flight Rules
28°C
Temperature
Dewpoint: 25°C
14 kt
360° G22 kt
10 SM
Visibility
4,700 ft
Ceiling
Above Ground Level
1008 hPa
QNH
Altimeter Setting

Raw METAR

SPECI PGUM 041116Z 36014G22KT 10SM FEW016 SCT022 BKN047 28/25 A2976 RMK AO2 T02780250 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 298 ft
FEW 1,600 ft AGL
SCT 2,200 ft AGL
BKN 4,700 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
1,600 ft
AGL (Above Ground)
1,898 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
2,200 ft
AGL (Above Ground)
2,498 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
4,700 ft
AGL (Above Ground)
4,998 ft AMSL

Weather Briefing

VFR

Antonio B. Won Pat International Airport is currently reporting visual flight rules (VFR) conditions with broken clouds at 4,700 feet and 10 SM visibility.

Wind Analysis

Winds are from the north (360°) at 14 knots with gusts to 22 knots. Runway 06L/24R is favored with a 7-knot headwind and 12-knot crosswind component (gusting to 19 knots crosswind).

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 4700 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 28°C (82°F) with a dewpoint of 25°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 30 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Expected weather includes: Showers Rain. Winds are forecast to reach up to 20 knots during the period. There is a 30% probability of MVFR conditions with Showers Rain between 14:00Z and 20:00Z.

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. 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
1008 hPa
Sea Level Pressure
For altitude above MSL
QFE
998 hPa
Field Pressure
Height above aerodrome (298 ft)
Pressure Alt
456 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,088 ft
ISA Deviation: +13.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF PGUM 040533Z 0406/0512 33013G21KT P6SM VCSH SCT025 SCT080 PROB30 0414/0420 35014G22KT 4SM SHRA SCT016 BKN030 FM042300 36020G28KT P6SM VCSH SCT015 BKN030
Upcoming Changes (Next 12 Hours)
11:56Z BASE
+0h
VFR 330° 13 kt
Visibility: >6SM
14:00Z PROB30
+3h
MVFR 350° 14 kt
Visibility: 4SM
Ceiling: 3,000 ft
Showers Rain
23:00Z FM042300
+12h
VFR 360° 20 kt
Visibility: >6SM
Ceiling: 3,000 ft

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
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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
GUM
06L ✈️
24R
06R ✈️
24L

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06L/24R
Active: 06L
12,015 ft 150 ft asphalt 65°
7.0 kt 12.1 kt
60° angle
✈️ 06R/24L
Active: 06R
10,014 ft 150 ft asphalt 65°
7.0 kt 12.1 kt
60° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - PGUM

15,614 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
76.9%
MVFR
20.4%
IFR
2.5%
LIFR
0.1%

Antonio B. Won Pat International Airport typically experiences VFR conditions 76.9% of the time, though instrument-rated pilots will find IFR weather present approximately 2.6% of observations. Prevailing winds are from the E averaging 10 knots, with gusts recorded up to 47 knots. The climate is relatively stable with temperatures averaging 27.5°C (range: 22°C to 32°C). The best months for VFR flying are July, October, November.

Wind Analysis

Prevailing Direction: E (90°)
Average Speed: 10 kt
Maximum Recorded: 47 kt
Calm Winds: 3.5%
Direction Distribution:
E
56.1%
N
4.7%
S
2.7%
W
2.5%
NE
18.5%
NW
2.3%
SE
8.4%
SW
1.5%

Temperature Range

Average: 27.5°C
Range: 22°C to 32°C
22°C 32°C

Visibility

Average: 9.4 SM
Below 3 SM: 1.6%
Fog Frequency: 0.2%

Best Months for VFR

July October November

Runway Wind Analysis

Runway 06L/24R
Favorable wind: 100%
Avg crosswind: 4.5 kt
Runway 06R/24L
Favorable wind: 100%
Avg crosswind: 4.5 kt

Statistics computed from 15,614 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

Antonio B. Won Pat International Airport - Airport Information

Airport Details

ICAO Code: PGUM
IATA Code: GUM
Type: large airport
Status: active
Elevation: 298 ft MSL

Location

City: Hagåtña
Country: GU
Latitude: 13.485000°
Longitude: 144.797282°
Time Zone: Etc/GMT-10

Runway Information

Runway 06L/24R
Length: 12,015 ft
Width: 150 ft
Surface: asphalt
ILS: No
Runway 06R/24L
Length: 10,014 ft
Width: 150 ft
Surface: asphalt
ILS: No

About Antonio B. Won Pat International Airport

Overview

Antonio B. Won Pat International Airport serves as the primary international gateway for Guam, located in Hagåtña. The airport is strategically positioned at 13.485000, 144.797282, with an elevation of 298 feet above mean sea level. As a large airport, it provides critical aviation infrastructure for the Pacific region, supporting both commercial and potential military aviation operations.

Flying Conditions

Guam's tropical maritime climate presents variable weather conditions for pilots, with potential for rapid atmospheric changes. The airport's significant runway length (12,015 ft and 10,014 ft) provides substantial operational flexibility across different meteorological scenarios. Pilots should anticipate potential tropical weather patterns typical to the Mariana Islands, including occasional convective activity and tropical maritime wind conditions.

Notable Features

The airport features two parallel asphalt runways (06L/24R and 06R/24L) with substantial length, enabling operations for wide-body aircraft and providing redundancy in runway selection. Its geographical position on Guam offers unique challenges related to Pacific island terrain, including potential wind shear and localized microclimatic variations. The 298 ft elevation suggests a relatively low-altitude airport environment with minimal terrain interference.

Approach Considerations

Runway orientation (06/24) suggests prevailing wind considerations from east-northeast to west-southwest directions. The extensive runway lengths provide multiple approach and departure options, with 12,015 ft and 10,014 ft offering significant margins for various aircraft performance envelopes. Pilots should prepare for potential oceanic approach dynamics typical of Pacific island airport environments.

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.