Fog in Saguenay, QC

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 3%). August typically brings about 3 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Saguenay-Bagotville Airport (CYBG). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
CYBGSaguenay-Bagotville Airport28 h/yrlive forecast

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 Saguenay fogs in

Fog here concentrates in March and June — about 28 hours in a typical year at CYBG, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYBG station page.

Fog season

January: ~2 hJanFebruary: ~3 hFebMarch: ~4 hMarApril: ~2 hAprMay: ~1 hMayJune: ~3 hJunJuly: ~3 hJulAugust: ~3 hAugSeptember: ~3 hSepOctober: ~3 hOctNovember: ~1 hNovDecember: ~3 hDec
Fog season is January, February, March, April, June, July, August, September, October, December, peaking in March; fog is mostly a 11 PM–7 AM phenomenon; typically thinning out by 3 PM; 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.