Fog in Deadhorse, AK

daily fog outlook & 2016–2026 climatology
Fog possible — NWS guidance shows a fog signal in the next 48 hours. August typically brings about 18 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

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

Measuring station

stationairportfog hours/yrforecast
PASCDeadhorse Airport209 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 Deadhorse fogs in

Fog here concentrates in July and April — about 209 hours in a typical year at PASC, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the PASC station page.

Fog season

January: ~18 hJanFebruary: ~18 hFebMarch: ~13 hMarApril: ~23 hAprMay: ~22 hMayJune: ~18 hJunJuly: ~25 hJulAugust: ~18 hAugSeptember: ~16 hSepOctober: ~13 hOctNovember: ~11 hNovDecember: ~14 hDec
Fog season is year-round, peaking in July; fog is mostly a 10 PM–7 AM phenomenon; a typical event lasts about 2 hours once it forms local time · 10-yr average

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