{"icao":"ZLLL","name":"Lanzhou Zhongchuan International Airport","lat":36.5152,"lon":103.62,"country":"CN","tz":"Asia/Shanghai","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":15,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["March","September"],"monthlyHours":[0,1,4,1,1,1,1,1,2,2,1,0],"medianEventHours":2,"season":{"summary":"Fog season is March, September, October, peaking in March; fog is mostly a 7 AM\u20139 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["March","September","October"],"timeOfDay":"7 AM\u20139 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 2 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/zlll/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=ZLLL","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/ZLLL.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}