Fog in Gustavus, AK

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 5 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

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

Measuring station

stationairportfog hours/yrforecast
PAGSGustavus Airport57 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 Gustavus fogs in

Fog here concentrates in January and October — about 57 hours in a typical year at PAGS, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the PAGS station page.

Fog season

January: ~9 hJanFebruary: ~3 hFebMarch: ~4 hMarApril: ~4 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~3 hJulAugust: ~5 hAugSeptember: ~8 hSepOctober: ~9 hOctNovember: ~3 hNovDecember: ~3 hDec
Fog season runs July through May, peaking in January; fog is mostly a 3 AM–8 AM phenomenon; typically thinning out by 11 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.