Fog in Saltillo

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in August.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Plan de Guadalupe International Airport (MMIO). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
MMIOPlan de Guadalupe International Airport100 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 Saltillo fogs in

Fog here concentrates in January and November — about 100 hours in a typical year at MMIO, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the MMIO station page.

Fog season

January: ~49 hJanFebruary: ~3 hFebMarch: ~3 hMarApril: ~19 hAprMay: ~32 hMayJune: ~2 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~0 hSepOctober: ~3 hOctNovember: ~35 hNovDecember: ~36 hDec
Fog season is January, April, May, November, December, peaking in January; fog is mostly a 2 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.