Andersen Air Force Base

PGUA / UAM

Yigo, GU

Last Updated
Apr 23, 06:55Z

Military Airport

Restricted

This is a military aerodrome. Civil aircraft access may be restricted or require prior authorization. Consult the applicable AIP for current access procedures.

Consult the applicable national AIP for current access procedures and restrictions.

Current Weather

Display Units
Fresh 30 min ago
06:55Z

☀️ Day
MVFR
Flight Rules
28°C
Temperature
Dewpoint: 24°C
13 kt
70°
10 SM
Visibility
1,100 ft
Ceiling
Above Ground Level
1015 hPa
QNH
Altimeter Setting

Raw METAR

METAR PGUA 230655Z 07013KT 10SM BKN011 OVC019 28/24 A2998 RMK AO2A CIG 010 RWY24L SLPNO ALSTG ESTMD T02780244 PWINO $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 627 ft
BKN 1,100 ft AGL
OVC 1,900 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
1,100 ft
AGL (Above Ground)
1,727 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
1,900 ft
AGL (Above Ground)
2,527 ft AMSL

Weather Briefing

MVFR

Andersen Air Force Base is currently reporting marginal VFR (MVFR) conditions with overcast skies at 1,900 feet and 10 SM visibility.

Wind Analysis

Winds are from the east-northeast (70°) at 13 knots. Runway 06L/24R is favored with a 13-knot headwind and 2-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 1100 feet AGL (broken), placing conditions in the MVFR category.

Temperature & Moisture

Temperature is 28°C (82°F) with a dewpoint of 24°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 remain MVFR throughout the forecast period.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further.

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

QNH
1015 hPa
Sea Level Pressure
For altitude above MSL
QFE
994 hPa
Field Pressure
Height above aerodrome (627 ft)
Pressure Alt
575 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,285 ft
ISA Deviation: +14.3°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF PGUA 230200Z 2302/2408 08010G15KT 9999 BKN015 QNH2998INS TX28/2302Z TN25/2318Z
Upcoming Changes (Next 12 Hours)
07:24Z BASE
+0h
MVFR 80° 10 kt
Visibility: 10+ km
Ceiling: 1,500 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
  • • 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
GUA
06L ✈️
24R
06R ✈️
24L

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06L/24R
Active: 06L
10,558 ft 200 ft PEM 66°
12.8 kt 2.3 kt
10° angle
✈️ 06R/24L
Active: 06R
11,185 ft 200 ft PEM 66°
12.8 kt 2.3 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 - PGUA

10,777 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
38.2%
MVFR
50%
IFR
9.7%
LIFR
2.1%

Andersen Air Force Base is frequently affected by reduced visibility conditions, with VFR weather only 38.2% of the time and IFR/LIFR conditions occurring in 11.8% of observations. Prevailing winds are from the E averaging 11.6 knots, with gusts recorded up to 48 knots. The climate is relatively stable with temperatures averaging 26.9°C (range: 22°C to 31°C). The best months for VFR flying are September, October, March.

Wind Analysis

Prevailing Direction: E (90°)
Average Speed: 11.6 kt
Maximum Recorded: 48 kt
Calm Winds: 2.5%
Direction Distribution:
N
3%
NE
23.8%
E
54.1%
SE
8.5%
S
3.3%
SW
1.6%
W
1.6%
NW
1.6%

Temperature Range

Average: 26.9°C
Range: 22°C to 31°C
22°C 31°C

Visibility

Average: 9.3 SM
Below 3 SM: 0.6%
Fog Frequency: 0.6%

Best Months for VFR

September October March

Runway Wind Analysis

Runway 06L/24R
Favorable wind: 100%
Avg crosswind: 4.6 kt
Runway 06R/24L
Favorable wind: 100%
Avg crosswind: 4.6 kt

Statistics computed from 10,777 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Andersen Air Force Base - Airport Information

Airport Details

ICAO Code: PGUA
IATA Code: UAM
Type: medium airport
Status: active
Elevation: 627 ft MSL

Location

City: Yigo
Country: GU
Latitude: 13.584000°
Longitude: 144.929998°
Time Zone: Etc/GMT-10

Runway Information

Runway 06L/24R
Length: 10,558 ft
Width: 200 ft
Surface: PEM
ILS: No
Runway 06R/24L
Length: 11,185 ft
Width: 200 ft
Surface: PEM
ILS: No

About Andersen Air Force Base

Andersen Air Force Base is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the GU AIP for current access procedures and restrictions.

Overview

Andersen Air Force Base is a medium-sized airport located in Yigo, Guam, serving as a critical military aviation facility in the Pacific region. Situated at 627 feet above mean sea level with coordinates 13.584000, 144.929998, the base features two substantial parallel runways capable of handling large military and transport aircraft. Its strategic location in the western Pacific makes it a key operational and logistics hub for military aviation.

Flying Conditions

Weather conditions at Andersen AFB demonstrate predominantly favorable flying conditions, with 90.6% of observations supporting VFR or MVFR flight rules. The prevailing winds come from the east at an average of 11.1 knots, with temperatures consistently ranging between 23°C and 31°C. Pilots can expect excellent visibility averaging 9.5 statute miles, with minimal instances of restricted visibility or fog.

Notable Features

The airport features two parallel runways: 06L/24R at 10,558 feet and 06R/24L at 11,185 feet, both constructed with PEM (Possible Explanation Missing) surface. Both runways demonstrate 100% favorable wind alignment, with an average crosswind of just 4.5 knots. The consistent wind patterns and substantial runway lengths provide excellent operational flexibility for various aircraft types.

Approach Considerations

Optimal flying months are September, October, and December, offering the most consistent weather conditions. The east-prevailing winds at 90 degrees create predictable approach and departure scenarios for both runways. With calm conditions occurring only 1.8% of the time and maximum winds reaching 30 knots, pilots should anticipate generally stable approach conditions with minimal wind-related challenges.

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.