{"city":"Ottumwa","region":"US-IA","country":"US","slug":"ottumwa-ia","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KOTM","name":"Ottumwa Regional Airport","subCat1HoursPerYear":60,"forecast":"live forecast"}],"primaryStation":"KOTM","forecast":{"covered":true,"public":true,"cycle":"2026-08-16T00:00:00Z","peakPct":7,"peakAtLocal":"2026-08-16T06:00:00-05:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 7%. August typically brings about 5 hours of dense fog here."},"climatology":{"subCat1HoursPerYear":60,"fogSeasonPeakMonths":["January","December"],"medianEventHours":1,"season":{"summary":"Fog season is January, February, March, May, August, September, November, December, peaking in January; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","May","August","September","November","December"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"11 AM"}},"links":{"page":"https://fogatlas.org/fog/city/ottumwa-ia/","stationPages":["https://fogatlas.org/fog/kotm/"],"verification":"https://fogatlas.org/fog/scorecard/"}}