{"icao":"KJHW","name":"Chautauqua County-Jamestown Airport","lat":42.1542,"lon":-79.254,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":150,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["August","September"],"monthlyHours":[15,13,13,8,11,7,16,19,17,10,5,16],"medianEventHours":1,"season":{"summary":"Fog season is year-round, peaking in August; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":34,"peakAtLocal":"2026-09-05T06:00:00-04:00","wording":"Some chance of fog: the calibrated forecast peaks at 34% (visibility under 1 mile) around 6 am Saturday."},"links":{"page":"https://fogatlas.org/fog/kjhw/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KJHW","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KJHW.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}