Fog in Gatineau, QC

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Ottawa / Gatineau Airport (CYND). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
CYNDOttawa / Gatineau Airport25 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 Gatineau fogs in

Fog here concentrates in October and November — about 25 hours in a typical year at CYND, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYND station page.

Fog season

January: ~1 hJanFebruary: ~2 hFebMarch: ~1 hMarApril: ~1 hAprMay: ~0 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~1 hAugSeptember: ~2 hSepOctober: ~3 hOctNovember: ~3 hNovDecember: ~2 hDec
Fog season is February, September, October, November, December, peaking in October; fog is mostly a 7 AM–9 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.