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Military Airport
RestrictedThis is a Japan Air Self-Defense Force (JASDF) installation. Civil access is not permitted.
Access Notes:
JASDF bases closed to civil traffic
Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
IFRIruma Air Base is currently reporting instrument flight rules (IFR) conditions with broken clouds at 700 feet and 10 SM visibility.
Wind Analysis
Winds are calm, presenting no crosswind concerns for any runway.
Visibility & Ceiling
Visibility is 10 SM. The ceiling is 700 feet AGL (broken). Only precision approaches may be usable depending on minimums.
Temperature & Moisture
Temperature is 22°C (72°F) with a dewpoint of 21°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 26 hours. IFR conditions are expected to persist or develop. An instrument rating and IFR flight plan are recommended. Expected weather includes: Light Rain, Mist, Rain, Mist, Light Rain. Temporary IFR conditions are forecast with Rain, Mist between 17:00Z and 04:00Z. Temporary MVFR conditions are forecast with Light Rain between 04:00Z and 09:00Z.
Pilot Recommendations
An instrument rating and IFR flight plan are required. Verify that destination and alternate approach minimums are above current and forecast conditions. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
| 17/35 | 6,562 ft | 148 ft | ASP | 159° |
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159° angle
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Iruma Air Base - Airport Information
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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.
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Recommended guides based on current conditions at RJTJ
Official Data Sources
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.