Fog in Juiz de Fora

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in August (10-year average).

Measured at Francisco de Assis Airport (SBJF). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
SBJFFrancisco de Assis Airport205 h/yrclimatology

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 Juiz de Fora fogs in

Fog here concentrates in December and January — about 205 hours in a typical year at SBJF, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the SBJF station page.

Fog season

January: ~21 hJanFebruary: ~0 hFebMarch: ~19 hMarApril: ~15 hAprMay: ~10 hMayJune: ~5 hJunJuly: ~5 hJulAugust: ~0 hAugSeptember: ~3 hSepOctober: ~13 hOctNovember: ~16 hNovDecember: ~36 hDec
Fog season is January, March, April, May, October, November, December, peaking in December; fog is mostly a 3 AM–3 AM phenomenon; typically thinning out by 4 AM; 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.