KOSU — The Ohio State University Airport - Don Scott Field

fog forecast & climatology · Columbus city page · full 10-year analysis →
No fog signal in NWS guidance for the next 48 hours. September typically brings about 4 hours of dense fog here.forecast cycle 2026-09-04T13:00:00Z · page rebuilt daily · live layers below update hourly

Fog hours per year
42 h below CAT I minima (2016–2026 average)
Fog season
February and October
Typical fog event
~2 h once it forms (middle half 1–3 h, n=188)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year The Ohio State University Airport - Don Scott Field spends 42 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in February and October. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~5 hJanFebruary: ~7 hFebMarch: ~2 hMarApril: ~1 hAprMay: ~4 hMayJune: ~2 hJunJuly: ~2 hJulAugust: ~2 hAugSeptember: ~4 hSepOctober: ~6 hOctNovember: ~3 hNovDecember: ~5 hDec
Fog season runs May through March, peaking in February; fog is mostly a 2 AM–8 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

Runway infrastructure

endapproach lightsbest approachlengthRVR
05——3,562 ft—
23——3,562 ft—
09L——2,994 ft—
27R——2,994 ft—
09RMALSRCAT I5,004 ft—
27L—LPV5,004 ft—

From FAA NASR / curated AIP Canada research. Approach-light class and minima tier drive how low an approach can be flown — details in the chase board.

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.