{"icao":"KMSS","name":"Massena International Airport Richards Field","lat":44.9362,"lon":-74.8443,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":52,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","December"],"monthlyHours":[4,4,4,2,2,2,4,3,9,6,5,7],"medianEventHours":1,"season":{"summary":"Fog season runs July through March, peaking in September; fog is mostly a midnight\u20138 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","July","August","September","October","November","December"],"timeOfDay":"midnight\u20138 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":12,"peakAtLocal":"2026-09-05T05:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 12%. September typically brings about 9 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kmss/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KMSS","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KMSS.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}