{"icao":"LSZG","name":"Grenchen Airfield","lat":47.1816,"lon":7.4172,"country":"CH","tz":"Europe/Zurich","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":488,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","November"],"monthlyHours":[70,48,21,7,11,6,3,8,38,91,97,101],"medianEventHours":2,"season":{"summary":"Fog season runs September through February, peaking in December; fog is mostly a 11 PM\u20139 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","November","December"],"timeOfDay":"11 PM\u20139 AM","typicallyClearsBy":"11 AM"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 38 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/lszg/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=LSZG","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/LSZG.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}