Fog in Cheongju

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 1 hour of dense fog here (10-year average).

Measured at Cheongju International Airport/Cheongju Air Base (K-59/G-513) (RKTU). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
RKTUCheongju International Airport/Cheongju Air Base (K-59/G-513)55 h/yrclimatology

Fog is measured where instruments live — airports. Hours/yr = time below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), the aviation definition of seriously dense fog.

When Cheongju fogs in

Fog here concentrates in October and November — about 55 hours in a typical year at RKTU, usually lasting ~3 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the RKTU station page.

Fog season

January: ~6 hJanFebruary: ~7 hFebMarch: ~4 hMarApril: ~1 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~4 hSepOctober: ~15 hOctNovember: ~10 hNovDecember: ~8 hDec
Fog season runs September through March, peaking in October; fog is mostly a 6 AM–9 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 3 hours once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.