{"icao":"EGSY","name":"MOD St Athan","lat":51.4052,"lon":-3.4333,"country":"GB","tz":"Europe/London","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":93,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","December"],"monthlyHours":[20,14,11,5,10,1,3,0,5,5,5,18],"medianEventHours":1,"season":{"summary":"Fog season runs September through May, peaking in January; fog here can hit at any hour of the day; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","May","September","October","November","December"],"timeOfDay":"any hour of the day","typicallyClearsBy":null}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 5 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/egsy/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=EGSY","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/EGSY.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}