{"icao":"EFHA","name":"Halli Airport","lat":61.856,"lon":24.7867,"country":"FI","tz":"Europe/Helsinki","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":212,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","October"],"monthlyHours":[21,18,15,11,4,5,6,14,33,32,29,28],"medianEventHours":1,"season":{"summary":"Fog season runs August through April, peaking in September; fog is mostly a 1 AM\u20138 AM phenomenon; typically thinning out by noon; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","August","September","October","November","December"],"timeOfDay":"1 AM\u20138 AM","typicallyClearsBy":"noon"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 33 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/efha/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=EFHA","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/EFHA.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}