Cheongju International Airport/Cheongju Air Base (K-59/G-513)

RKTU / CJJ

Cheongju, KR

Last Updated
Apr 24, 08:00Z

Military Airport

Restricted

This is a Republic of Korea Air Force installation. Civil access is restricted.

Access Notes:

Military fields restricted to civil traffic

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

Current Weather

Display Units
Fresh 17 min ago
08:00Z

☀️ Day
VFR
Flight Rules
23°C
Temperature
Dewpoint: -7°C
2 kt
220°
--
Visibility
Ceiling
Unlimited
--
QNH
Altimeter Setting

Raw METAR

METAR RKTU 240800Z 22002KT CAVOK 23/M07 Q1014

Weather Briefing

VFR

Cheongju International Airport/Cheongju Air Base (K-59/G-513) is currently reporting visual flight rules (VFR) conditions with clear skies.

Wind Analysis

Winds are from the southwest (220°) at 2 knots.

Visibility & Ceiling

Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 23°C (73°F) with a dewpoint of -7°C, indicating very dry conditions.

Forecast Outlook

The TAF forecast covers the next 30 hours. Conditions are expected to remain VFR throughout the forecast period.

Pilot Recommendations

Conditions are favorable for visual flight.

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

Forecast (TAF)

View Full TAF
Raw TAF
TAF RKTU 240500Z 2406/2512 09006KT CAVOK TN03/2421Z TX25/2506Z BECMG 2423/2424 24006KT
Upcoming Changes (Next 12 Hours)
08:17Z BASE
+0h
VFR 90° 6 kt
Visibility: >10km

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
KTU
06L
24R ✈️
06R
24L ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 06L/24R
Active: 24R
9,000 ft 200 ft CON 51°
1.9 kt 0.7 kt
20° angle
✈️ 06R/24L
Active: 24L
9,000 ft 150 ft CON 52°
1.9 kt 0.7 kt
20° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - RKTU

5,942 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
61.2%
MVFR
15.1%
IFR
19.2%
LIFR
4.5%

Cheongju International Airport/Cheongju Air Base (K-59/G-513) typically experiences VFR conditions 61.2% of the time, though instrument-rated pilots will find IFR weather present approximately 23.7% of observations. Prevailing winds are from the W averaging 3.9 knots, with gusts recorded up to 34 knots. Temperature extremes range from -15°C to 31°C, reflecting significant seasonal variation. The best months for VFR flying are January, April, March.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 3.9 kt
Maximum Recorded: 34 kt
Calm Winds: 0%
Direction Distribution:
E
19.1%
N
9.9%
S
4.2%
W
22.9%
NE
12.9%
NW
12.4%
SE
4.9%
SW
13.6%

Temperature Range

Average: 6.5°C
Range: -15°C to 31°C
-15°C 31°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 3.1%

Best Months for VFR

January April March

Runway Wind Analysis

Runway 06L/24R
Favorable wind: 100%
Avg crosswind: 2 kt
Runway 06R/24L
Favorable wind: 100%
Avg crosswind: 2 kt

Statistics computed from 5,942 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Cheongju International Airport/Cheongju Air Base (K-59/G-513) - Airport Information

Airport Details

ICAO Code: RKTU
IATA Code: CJJ
Type: medium airport
Status: active
Elevation: 191 ft MSL

Location

City: Cheongju
Country: KR
Latitude: 36.717008°
Longitude: 127.498741°
Time Zone: Europe/Moscow

Runway Information

Runway 06L/24R
Length: 9,000 ft
Width: 200 ft
Surface: CON
ILS: No
Runway 06R/24L
Length: 9,000 ft
Width: 150 ft
Surface: CON
ILS: No

About Cheongju International Airport/Cheongju Air Base (K-59/G-513)

Cheongju International Airport/Cheongju Air Base (K-59/G-513) is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the KR AIP for current access procedures and restrictions.

Overview

Cheongju International Airport serves as a joint civil-military facility located in central South Korea, situated near the city of Cheongju. The airport features two parallel concrete runways, each 9,000 feet long, capable of handling medium-sized aircraft operations. Its strategic location and dual-use nature make it a significant aviation hub in the region.

Flying Conditions

Pilots can expect predominantly VFR conditions 58.2% of the time, with MVFR and IFR conditions occurring in the remaining 41.8% of observations. The airport experiences a wide temperature range from -14°C to 31°C, with an average temperature of 7.6°C. Westerly winds dominate, averaging 3.7 knots, with occasional gusts up to 34 knots.

Notable Features

The airport sits at an elevation of 191 feet MSL, providing relatively flat terrain for operations. Both runways (06L/24R and 06R/24L) demonstrate 100% favorable wind conditions, with minimal average crosswind of 2 knots. Low visibility is rare, with fog present in only 3.1% of observations and average visibility typically around 10 statute miles.

Approach Considerations

October, November, and January represent the best months for VFR flying conditions at Cheongju. The parallel runway configuration allows for flexible operations, with both runways aligned at 060/240 degrees and identical favorable wind characteristics. Pilots should anticipate consistent wind patterns from the west and prepare for potential seasonal temperature variations.

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.