RKNW — Wonju Airport / Hoengseong Air Base (K-38/K-46)

fog forecast & climatology · Wonju city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 1 hour of dense fog here (10-year average).

Fog hours per year
62 h below CAT I minima (2016–2026 average)
Fog season
November and December
Typical fog event
~1 h once it forms (middle half 1–1 h, n=28)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Wonju Airport / Hoengseong Air Base (K-38/K-46) spends 62 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in November and December. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~7 hJanFebruary: ~0 hFebMarch: ~6 hMarApril: ~8 hAprMay: ~2 hMayJune: ~1 hJunJuly: ~3 hJulAugust: ~1 hAugSeptember: ~1 hSepOctober: ~6 hOctNovember: ~13 hNovDecember: ~10 hDec
Fog season is January, March, April, October, November, December, peaking in November; fog is mostly a 4 AM–6 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour once it forms local time · 10-yr average

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.