Fog in Newark, NJ

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 Newark Liberty International Airport (KEWR). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KEWRNewark Liberty International Airport20 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 Newark fogs in

Fog here concentrates in February and January — about 20 hours in a typical year at KEWR, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KEWR station page.

Fog season

January: ~4 hJanFebruary: ~5 hFebMarch: ~2 hMarApril: ~1 hAprMay: ~1 hMayJune: ~1 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~0 hSepOctober: ~3 hOctNovember: ~1 hNovDecember: ~2 hDec
Fog season is January, February, March, October, December, peaking in February; fog is mostly a 6 AM–11 AM phenomenon; typically thinning out by 2 PM; 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.