Andersen Air Force Base

PGUA / UAM

Yigo, GU

Last Updated
Jul 4, 08:42Z

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 12 min ago
08:42Z

☀️ Day
VFR
Flight Rules
28°C
Temperature
Dewpoint: 26°C
13 kt
10°
9 SM
Visibility
4,600 ft
Ceiling
Above Ground Level
1007 hPa
QNH
Altimeter Setting

Raw METAR

SPECI PGUA 040842Z AUTO 01013KT 9SM FEW007 SCT010 SCT017 BKN046 BKN140 28/26 A2973 RMK AO2 LTG DSNT E-S SLP058 PWINO $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 627 ft
FEW 700 ft AGL
SCT 1,000 ft AGL
SCT 1,700 ft AGL
BKN 4,600 ft AGL
BKN 14,000 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
700 ft
AGL (Above Ground)
1,327 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
1,000 ft
AGL (Above Ground)
1,627 ft AMSL
SCT
Scattered (3/8-4/8 sky coverage)
1,700 ft
AGL (Above Ground)
2,327 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
4,600 ft
AGL (Above Ground)
5,227 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
14,000 ft
AGL (Above Ground)
14,627 ft AMSL

Weather Briefing

VFR

Andersen Air Force Base is currently reporting visual flight rules (VFR) conditions with broken clouds at 4,600 feet and 9 SM visibility.

Wind Analysis

Winds are from the north (10°) at 13 knots. Runway 06L/24R is favored with a 8-knot headwind and 10-knot crosswind component.

Visibility & Ceiling

Visibility is 9 SM. The ceiling is 4600 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 28°C (82°F) with a dewpoint of 26°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 30 hours. IFR conditions are expected to persist or develop. An instrument rating and IFR flight plan are recommended. Expected weather includes: Light Showers Rain, Showers Rain. Winds are forecast to reach up to 20 knots during the period. Temporary IFR conditions are forecast with Light Showers Rain between 06:00Z and 10:00Z.

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
1007 hPa
Sea Level Pressure
For altitude above MSL
QFE
986 hPa
Field Pressure
Height above aerodrome (627 ft)
Pressure Alt
815 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,525 ft
ISA Deviation: +14.3°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF PGUA 040200Z 0402/0508 35012G20KT 9999 BKN015 QNH2975INS TEMPO 0406/0410 35015G20KT 6000 -SHRA BKN009 BKN015 BECMG 0410/0411 34015G20KT 6000 -SHRA BKN009 OVC025 QNH2973INS BECMG 0501/0502 33020G30KT 4800 SHRA BKN009 OVC015 QNH2970INS TX30/0402Z TN26/0418Z
Upcoming Changes (Next 12 Hours)
08:54Z BASE
+0h
MVFR 350° 12 kt
Visibility: 10+ km
Ceiling: 1,500 ft
10:00Z BECMG
+2h
IFR 340° 15 kt
Visibility: 6 km
Ceiling: 900 ft
Light 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
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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
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°
8.4 kt 10.0 kt
50° angle
✈️ 06R/24L
Active: 06R
11,185 ft 200 ft PEM 66°
8.4 kt 10.0 kt
50° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - PGUA

13,700 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
37.7%
MVFR
51.2%
IFR
9.2%
LIFR
1.9%

Andersen Air Force Base is frequently affected by reduced visibility conditions, with VFR weather only 37.7% of the time and IFR/LIFR conditions occurring in 11.1% of observations. Prevailing winds are from the E averaging 11.5 knots, with gusts recorded up to 48 knots. The climate is relatively stable with temperatures averaging 27.1°C (range: 22°C to 31°C). The best months for VFR flying are September, October, July.

Wind Analysis

Prevailing Direction: E (90°)
Average Speed: 11.5 kt
Maximum Recorded: 48 kt
Calm Winds: 2.1%
Direction Distribution:
E
56.7%
N
2.8%
S
2.9%
W
1.3%
NE
22.3%
NW
1.5%
SE
9.1%
SW
1.3%

Temperature Range

Average: 27.1°C
Range: 22°C to 31°C
22°C 31°C

Visibility

Average: 9.4 SM
Below 3 SM: 0.5%
Fog Frequency: 0.5%

Best Months for VFR

September October July

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 13,700 METAR observations (Sep 2025 - Jul 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.