{"city":"Petrozavodsk","region":"RU-KR","country":"RU","slug":"petrozavodsk","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"ULPB","name":"Petrozavodsk Airport","subCat1HoursPerYear":61,"forecast":"climatology"}],"primaryStation":"ULPB","forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. August typically brings about 4 hours of dense fog here (10-year average)."},"climatology":{"subCat1HoursPerYear":61,"fogSeasonPeakMonths":["October","September"],"medianEventHours":1,"season":{"summary":"Fog season is January, May, August, September, October, November, December, peaking in October; fog is mostly a 11 PM\u20138 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","May","August","September","October","November","December"],"timeOfDay":"11 PM\u20138 AM","typicallyClearsBy":"11 AM"}},"links":{"page":"https://fogatlas.org/fog/city/petrozavodsk/","stationPages":["https://fogatlas.org/fog/ulpb/"],"verification":"https://fogatlas.org/fog/scorecard/"}}