SKIP — San Luis Airport

fog forecast & climatology · Ipiales city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 10 hours of dense fog here (10-year average).

Fog hours per year
74 h below CAT I minima (2016–2026 average)
Fog season
December and March
Typical fog event
~1 h once it forms (middle half 1–2 h, n=274)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year San Luis Airport spends 74 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in December and March. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~17 hJanFebruary: ~12 hFebMarch: ~21 hMarApril: ~16 hAprMay: ~6 hMayJune: ~5 hJunJuly: ~2 hJulAugust: ~2 hAugSeptember: ~10 hSepOctober: ~8 hOctNovember: ~10 hNovDecember: ~28 hDec
Fog season runs September through April, peaking in December; fog is mostly a 2 AM–6 AM phenomenon; typically thinning out by 8 AM; a typical event lasts about 1 hour once it forms local time · 10-yr average

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.