{"city":"Des Moines","region":"US-IA","country":"US","slug":"des-moines-ia","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KDSM","name":"Des Moines International Airport","subCat1HoursPerYear":41,"forecast":"live forecast"}],"primaryStation":"KDSM","forecast":{"covered":true,"public":true,"cycle":"2026-08-16T00:00:00Z","peakPct":5,"peakAtLocal":"2026-08-16T05:00:00-05:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 5%. August typically brings about 1 hour of dense fog here."},"climatology":{"subCat1HoursPerYear":41,"fogSeasonPeakMonths":["December","January"],"medianEventHours":2,"season":{"summary":"Fog season is January, February, September, October, December, peaking in January; fog is mostly a 5 AM\u20138 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","September","October","December"],"timeOfDay":"5 AM\u20138 AM","typicallyClearsBy":"11 AM"}},"links":{"page":"https://fogatlas.org/fog/city/des-moines-ia/","stationPages":["https://fogatlas.org/fog/kdsm/"],"verification":"https://fogatlas.org/fog/scorecard/"}}