{"city":"J\u00e4ms\u00e4","region":"FI-08","country":"FI","slug":"jamsa","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"EFHA","name":"Halli Airport","subCat1HoursPerYear":212,"forecast":"climatology"}],"primaryStation":"EFHA","forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. August typically brings about 14 hours of dense fog here (10-year average)."},"climatology":{"subCat1HoursPerYear":212,"fogSeasonPeakMonths":["September","October"],"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"}},"links":{"page":"https://fogatlas.org/fog/city/jamsa/","stationPages":["https://fogatlas.org/fog/efha/"],"verification":"https://fogatlas.org/fog/scorecard/"}}