Fog in Kankakee, IL

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 5%). August typically brings about 5 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Greater Kankakee Airport (KIKK). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KIKKGreater Kankakee Airport51 h/yrlive forecast

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 Kankakee fogs in

Fog here concentrates in February and January — about 51 hours in a typical year at KIKK, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KIKK station page.

Fog season

January: ~8 hJanFebruary: ~8 hFebMarch: ~4 hMarApril: ~1 hAprMay: ~2 hMayJune: ~2 hJunJuly: ~4 hJulAugust: ~5 hAugSeptember: ~5 hSepOctober: ~2 hOctNovember: ~4 hNovDecember: ~6 hDec
Fog season runs May through March, peaking in January; fog is mostly a 3 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

Machine access: data.json · llms.txt · forecast verification. Not for operational use.