{"city":"Portland","region":"US-ME","country":"US","slug":"portland-me","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KPWM","name":"Portland International Jetport","subCat1HoursPerYear":82,"forecast":"verifying"}],"primaryStation":"KPWM","forecast":{"covered":true,"public":false,"cycle":"2026-08-16T00:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. August typically brings about 5 hours of dense fog here."},"climatology":{"subCat1HoursPerYear":82,"fogSeasonPeakMonths":["March","September"],"medianEventHours":2,"season":{"summary":"Fog season is year-round, peaking in March; fog is mostly a 1 AM\u20138 AM phenomenon; typically thinning out by noon; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"1 AM\u20138 AM","typicallyClearsBy":"noon"}},"links":{"page":"https://fogatlas.org/fog/city/portland-me/","stationPages":["https://fogatlas.org/fog/kpwm/"],"verification":"https://fogatlas.org/fog/scorecard/"}}