Iruma Air Base

RJTJ

Sayama, JP

Last Updated
Aug 8, 02:55Z

No METAR Available for RJTJ

Showing weather from nearby airport with METAR data.

Currently using: RJTY
Weather Source: Yokota Air Base (RJTY)
Distance: 6nm / 12km from RJTJ

Military Airport

Restricted

This is a Japan Air Self-Defense Force (JASDF) installation. Civil access is not permitted.

Access Notes:

JASDF bases closed to civil traffic

Consult official AIP (Japan AIP ENR 5.2) for current access procedures and restrictions.

Current Weather

Display Units
Recent 47 min ago
02:55Z

🌙 Night
VFR
Flight Rules
34°C
Temperature
Dewpoint: 22°C
3 kt
220°
10 SM
Visibility
4,600 ft
Ceiling
Above Ground Level
1009 hPa
QNH
Altimeter Setting

Raw METAR

METAR RJTY 080255Z 22003KT 10SM BKN046 34/22 A2980 RMK AO2A SLP089 T03370224 58018 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 295 ft
BKN 4,600 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
4,600 ft
AGL (Above Ground)
4,895 ft AMSL

Weather Briefing

VFR

Iruma Air Base is currently reporting visual flight rules (VFR) conditions with broken clouds at 4,600 feet and 10 SM visibility.

Wind Analysis

Winds are from the southwest (220°) at 3 knots.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 4600 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 34°C (93°F) with a dewpoint of 22°C, indicating relatively dry conditions. High temperatures at this elevation may result in significant density altitude effects. Pilots should calculate density altitude and adjust performance expectations accordingly.

Forecast Outlook

The TAF forecast covers the next 30 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Temporary VFR conditions are forecast between 04:00Z and 08:00Z. Temporary MVFR conditions are forecast between 18:00Z and 22:00Z.

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
1009 hPa
Sea Level Pressure
For altitude above MSL
QFE
999 hPa
Field Pressure
Height above aerodrome (295 ft)
Pressure Alt
423 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,774 ft (High - Reduced Performance)
ISA Deviation: +19.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF RJTY 072100Z 0721/0903 VRB06KT 9999 SCT010 BKN020 QNH2989INS BECMG 0800/0801 09010G15KT 9999 FEW010 SCT020 QNH2978INS TEMPO 0804/0808 15012G20KT BECMG 0809/0810 18009KT 9999 SCT010 BKN020 QNH2977INS WND VRB06KT AFT 0815 TEMPO 0818/0822 BKN010 BECMG 0900/0901 09009KT 9999 FEW010 SCT020 QNH2978INS TX33/0804Z TN26/0721Z
Upcoming Changes (Next 12 Hours)
03:41Z BASE
+0h
MVFR VRB 6 kt
Visibility: 10+ km
Ceiling: 2,000 ft
04:00Z TEMPO
+1h
VFR 150° 12 kt
09:00Z BECMG
+6h
LIFR VRB 6 kt
Visibility: 0.815 km
Ceiling: 2,000 ft

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
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
JTJ
17 ✈️
35

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 17/35
Active: 17
6,562 ft 148 ft ASP 159°
1.9 kt 2.3 kt
50° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Iruma Air Base - Airport Information

Airport Details

ICAO Code: RJTJ
Type: medium airport
Status: active
Elevation: 295 ft MSL

Location

City: Sayama
Country: JP
Latitude: 35.841900°
Longitude: 139.410995°
Time Zone: Europe/Moscow

Runway Information

Runway 17/35
Length: 6,562 ft
Width: 148 ft
Surface: ASP
ILS: No

About Iruma Air Base

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

Overview

Iruma Air Base (RJTJ) is a medium-sized airport located in Sayama, Japan, situated at an elevation of 295 feet above mean sea level. The base serves the Greater Tokyo metropolitan area, positioned strategically in the Saitama Prefecture. Its single runway (17/35) extends 6,562 feet and is constructed with asphalt surface.

Flying Conditions

The airport's moderate elevation and location near Tokyo suggest variable weather conditions influenced by regional maritime and continental air masses. Pilots should anticipate potential seasonal wind variations that could impact runway 17/35 operations. The surrounding terrain and proximity to urban areas may create localized wind patterns that require careful approach and departure planning.

Notable Features

Iruma Air Base's runway orientation of 17/35 indicates a north-northwest to south-southeast alignment. The airport's geographic position near Tokyo provides accessibility to a significant metropolitan region. The 6,562-foot runway length accommodates a range of medium-sized aircraft operations with sufficient runway distance for most standard approach and landing requirements.

Approach Considerations

Approach considerations should focus on the runway's 17/35 orientation, which suggests potential crosswind scenarios depending on prevailing meteorological conditions. Pilots should carefully assess wind direction and speed when selecting runway approach. The airport's elevation at 295 feet MSL provides relatively straightforward terrain clearance for standard approach procedures.

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.