Fog in San Luis Potosí

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 2 hours of dense fog here (10-year average).

Measured at Ponciano Arriaga International Airport (MMSP). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
MMSPPonciano Arriaga International Airport88 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 San Luis Potosí fogs in

Fog here concentrates in December and November — about 88 hours in a typical year at MMSP, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the MMSP station page.

Fog season

January: ~14 hJanFebruary: ~8 hFebMarch: ~8 hMarApril: ~5 hAprMay: ~3 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~2 hAugSeptember: ~1 hSepOctober: ~11 hOctNovember: ~15 hNovDecember: ~23 hDec
Fog season runs October through March, peaking in December; fog is mostly a 5 AM–8 AM phenomenon; typically thinning out by 9 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.