Fog in Yarmouth, NS

daily fog outlook & 2016–2026 climatology
Some chance of fog — peaks at 41% around 7 am Sunday.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Yarmouth Airport (CYQI). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
CYQIYarmouth Airport560 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 Yarmouth fogs in

Fog here concentrates in July and August — about 560 hours in a typical year at CYQI, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYQI station page.

Fog season

January: ~13 hJanFebruary: ~18 hFebMarch: ~29 hMarApril: ~28 hAprMay: ~43 hMayJune: ~74 hJunJuly: ~133 hJulAugust: ~111 hAugSeptember: ~61 hSepOctober: ~20 hOctNovember: ~11 hNovDecember: ~17 hDec
Fog season runs May through September, peaking in July; fog is mostly a 9 PM–9 AM phenomenon; typically thinning out by noon; 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.