Fog in New York, NY

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in August.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at John F. Kennedy International Airport (KJFK). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring stations

stationairportfog hours/yrforecast
KJFKJohn F. Kennedy International Airport108 h/yrverifying
KLGALaGuardia Airport43 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 New York fogs in

Fog here concentrates in May and March — about 108 hours in a typical year at KJFK, usually lasting ~3 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KJFK station page.

Fog season

January: ~11 hJanFebruary: ~12 hFebMarch: ~16 hMarApril: ~11 hAprMay: ~20 hMayJune: ~13 hJunJuly: ~1 hJulAugust: ~0 hAugSeptember: ~2 hSepOctober: ~7 hOctNovember: ~3 hNovDecember: ~12 hDec
Fog season is January, February, March, April, May, June, October, December, peaking in May; fog is mostly a 10 PM–9 AM phenomenon; a typical event lasts about 3 hours once it forms local time · 10-yr average

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