{"city":"Decatur","region":"US-IL","country":"US","slug":"decatur-il","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KDEC","name":"Decatur Airport","subCat1HoursPerYear":44,"forecast":"verifying"}],"primaryStation":"KDEC","forecast":{"covered":true,"public":false,"cycle":"2026-08-16T00:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. August typically brings about 2 hours of dense fog here."},"climatology":{"subCat1HoursPerYear":44,"fogSeasonPeakMonths":["January","February"],"medianEventHours":2,"season":{"summary":"Fog season is January, February, March, May, September, November, December, peaking in January; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","May","September","November","December"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"links":{"page":"https://fogatlas.org/fog/city/decatur-il/","stationPages":["https://fogatlas.org/fog/kdec/"],"verification":"https://fogatlas.org/fog/scorecard/"}}