Fog in St. Anthony, NL

daily fog outlook & 2016–2026 climatology
Forecast feed initializing for this station. August typically brings about 9 hours of dense fog here (10-year average).

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

Measuring station

stationairportfog hours/yrforecast
CYAYSt. Anthony Airport125 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 St. Anthony fogs in

Fog here concentrates in April and March — about 125 hours in a typical year at CYAY, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYAY station page.

Fog season

January: ~13 hJanFebruary: ~10 hFebMarch: ~17 hMarApril: ~17 hAprMay: ~10 hMayJune: ~13 hJunJuly: ~9 hJulAugust: ~9 hAugSeptember: ~4 hSepOctober: ~7 hOctNovember: ~5 hNovDecember: ~9 hDec
Fog season runs October through August, peaking in March; fog is mostly a 2 AM–10 AM phenomenon; 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.