{"icao":"KRDU","name":"Raleigh-Durham International Airport","lat":35.8787,"lon":-78.7873,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":64,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["February","January"],"monthlyHours":[12,13,4,2,3,1,2,3,6,5,3,10],"medianEventHours":2,"season":{"summary":"Fog season is January, February, March, September, October, December, peaking in February; fog is mostly a 2 AM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","September","October","December"],"timeOfDay":"2 AM\u20139 AM","typicallyClearsBy":"11 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":1,"peakAtLocal":"2026-09-05T05:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 1%. September typically brings about 6 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/krdu/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KRDU","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KRDU.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}