Fog in Ketchikan, AK

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 4 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Ketchikan International Airport (PAKT). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
PAKTKetchikan International Airport35 h/yrverifying

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 Ketchikan fogs in

Fog here concentrates in January and October — about 35 hours in a typical year at PAKT, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the PAKT station page.

Fog season

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

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