Fog in Perugia (PG)

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 Perugia San Francesco d'Assisi – Umbria International Airport (LIRZ). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LIRZPerugia San Francesco d'Assisi – Umbria International Airport81 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 Perugia (PG) fogs in

Fog here concentrates in December and January — about 81 hours in a typical year at LIRZ, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LIRZ station page.

Fog season

January: ~18 hJanFebruary: ~2 hFebMarch: ~2 hMarApril: ~1 hAprMay: ~1 hMayJune: ~1 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~1 hSepOctober: ~4 hOctNovember: ~16 hNovDecember: ~42 hDec
Fog season runs November through January, peaking in December; fog is mostly a midnight–9 AM phenomenon; typically thinning out by 11 AM; 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.