Fog in Istres, Bouches-du-Rhône

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 1 hour of dense fog here (10-year average).

Measured at Istres-Le Tubé Air Base (LFMI). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFMIIstres-Le Tubé Air Base18 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 Istres, Bouches-du-Rhône fogs in

Fog here concentrates in February and January — about 18 hours in a typical year at LFMI, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFMI station page.

Fog season

January: ~3 hJanFebruary: ~5 hFebMarch: ~2 hMarApril: ~0 hAprMay: ~0 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~1 hAugSeptember: ~1 hSepOctober: ~2 hOctNovember: ~1 hNovDecember: ~2 hDec
Fog season is January, February, March, October, December, peaking in February; fog is mostly a 2 AM–9 AM phenomenon; typically thinning out by 11 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.