Fog in Atlanta, GA

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Hartsfield Jackson Atlanta International Airport (KATL). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring stations

stationairportfog hours/yrforecast
KATLHartsfield Jackson Atlanta International Airport56 h/yrverifying
KRYYCobb County International Airport-McCollum Field37 h/yrverifying
KPDKDeKalb Peachtree Airport24 h/yrverifying
KFTYFulton County Airport Brown Field17 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 Atlanta fogs in

Fog here concentrates in December and February — about 56 hours in a typical year at KATL, usually lasting ~3 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KATL station page.

Fog season

January: ~11 hJanFebruary: ~12 hFebMarch: ~6 hMarApril: ~2 hAprMay: ~2 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~1 hAugSeptember: ~0 hSepOctober: ~1 hOctNovember: ~6 hNovDecember: ~16 hDec
Fog season runs November through March, peaking in December; fog is mostly a 1 AM–9 AM phenomenon; typically thinning out by 2 PM; 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.