{"station":{"icao":"ZMCK","city":{"slug":"ulaanbaatar","name":"Ulaanbaatar","country":"Mongolia"},"timezone":"Asia/Ulaanbaatar","lat":47.89,"lon":106.91,"us":false,"html":"https://weathermarket.io/station/ZMCK","json":"https://weathermarket.io/api/station/ZMCK","nwsCli":null},"date":"2026-10-28","window":{"date":"2026-10-28","timezone":"Asia/Ulaanbaatar","dayStartUtc":"2026-10-27T16:00:00.000Z","dayEndUtc":"2026-10-28T16:00:00.000Z","utcOffsetStart":"+08:00","utcOffsetEnd":"+08:00","hours":24},"complete":true,"values":{"tmax":3,"tmaxAt":"2026-10-28T08:00:00.000Z","tmin":-11,"tminAt":"2026-10-27T23:00:00.000Z","tavg":-4.2,"humidityMean":49.1,"windMean":3.3,"windMax":8.7,"windMaxAt":"2026-10-28T08:30:00.000Z","precipObservedCount":0,"nObservations":48,"maxGapMinutes":30,"units":{"temperature":"°C","wind":"m/s","humidity":"%"},"source":"Extremes over the METAR observations listed in this record (hourly plus special reports) - the same record values.metarDerived carries in /api/station/{icao}/daily"},"extremes":{"tmax":{"obsTimeUtc":"2026-10-28T08:00:00.000Z","obsTimeLocal":"2026-10-28T16:00:00+08:00","metarType":"METAR","raw":"METAR ZMCK 280800Z 27008MPS CAVOK 03/M12 Q1011 NOSIG RMK QFE643.8 32","temp":3,"dewpoint":-12,"humidity":32,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-27T23:00:00.000Z","obsTimeLocal":"2026-10-28T07:00:00+08:00","metarType":"METAR","raw":"METAR ZMCK 272300Z 08003MPS 050V110 CAVOK M11/M17 Q1015 NOSIG RMK QFE645.8 60","temp":-11,"dewpoint":-17,"humidity":61,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-28T08:30:00.000Z","obsTimeLocal":"2026-10-28T16:30:00+08:00","metarType":"METAR","raw":"METAR ZMCK 280830Z 28009MPS CAVOK 03/M13 Q1011 NOSIG RMK QFE643.5 32","temp":3,"dewpoint":-13,"humidity":30,"wind":8.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-28T19:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":30,"normalIntervalMin":30,"thresholdMinutes":60},"reasons":[],"holdHours":3},"revision":"87560515a0ff4b0b","lastChangedAt":"2026-10-28T15:31:44.472Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/ZMCK/2026-10-28?format=record","status":"anchored","sha256":"5e1715cd9905f925e8404ade803894491b81782e1fbb9f54199fde500c636fcb","revision":"87560515a0ff4b0b","flareTxHash":"0x56a4eb85ae7560de93697b2428d7882eb656a70bf30ac28229740427adff1342","flareBlock":73816323,"anchoredAt":"2026-11-05T16:02:06.167Z","explorer":"https://flare-explorer.flare.network/tx/0x56a4eb85ae7560de93697b2428d7882eb656a70bf30ac28229740427adff1342","matchesCurrent":true,"note":"GET the record bytes, SHA-256 them, and call SnapshotAnchor.isAnchored(sha256) on Flare - the anchored record is the one to settle on"},"qc":{"summary":{"good":48,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-28T08:00:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-27T23:00:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":3,"tmin":-11,"differsFromRecord":false},"note":"Flags are attached beside the anchored record and are not part of its bytes; the record's extremes are unchanged. A suspect extreme is usable but worth checking against the raw text (extremes.*.reasons); a bad report is physically impossible and excludingBad shows the extremes without it."},"official":null,"observations":[{"obsTimeUtc":"2026-10-27T16:00:00.000Z","obsTimeLocal":"2026-10-28T00:00:00+08:00","metarType":"METAR","raw":"METAR ZMCK 271600Z VRB01MPS CAVOK M07/M17 Q1016 NOSIG RMK QFE646.6 39","temp":-7,"dewpoint":-17,"humidity":45,"wind":1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-27T16:30:00.000Z","obsTimeLocal":"2026-10-28T00:30:00+08:00","metarType":"METAR","raw":"METAR ZMCK 271630Z 00000MPS CAVOK M07/M17 Q1016 NOSIG RMK QFE646.5 41","temp":-7,"dewpoint":-17,"humidity":45,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-27T17:00:00.000Z","obsTimeLocal":"2026-10-28T01:00:00+08:00","metarType":"METAR","raw":"METAR ZMCK 271700Z VRB01MPS CAVOK M08/M17 Q1016 NOSIG RMK QFE646.6 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56","temp":-3,"dewpoint":-10,"humidity":59,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-28T14:30:00.000Z","obsTimeLocal":"2026-10-28T22:30:00+08:00","metarType":"METAR","raw":"METAR ZMCK 281430Z 29003MPS CAVOK M04/M10 Q1010 NOSIG RMK QFE642.7 59","temp":-4,"dewpoint":-10,"humidity":63,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-28T15:00:00.000Z","obsTimeLocal":"2026-10-28T23:00:00+08:00","metarType":"METAR","raw":"METAR ZMCK 281500Z VRB01MPS CAVOK M03/M10 Q1010 NOSIG RMK QFE642.8 56","temp":-3,"dewpoint":-10,"humidity":59,"wind":1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-28T15:30:00.000Z","obsTimeLocal":"2026-10-28T23:30:00+08:00","metarType":"METAR","raw":"METAR ZMCK 281530Z VRB01MPS CAVOK M04/M10 Q1010 NOSIG RMK QFE642.9 59","temp":-4,"dewpoint":-10,"humidity":63,"wind":1,"precipObserved":false,"correctedAt":null,"originalRaw":null}],"about":{"record":"Station-day record: the daily extremes over every METAR observation (hourly plus special reports) received for the station's local calendar day - local midnight to local midnight, daylight saving applied. Temperatures are whole degrees Celsius as reported in METAR; a short-lived peak between reports can be missed. This is not a model or an aggregate - every value points at the report that produced it, and every report in the day is listed verbatim.","settlementRule":"The settlement value is the daily maximum (or minimum) of this record once it is final: the local day has ended and the 3-hour correction hold has passed. A day whose longest gap between reports exceeds the station's normal interval plus 30 minutes is final but flagged not settleable - a market should treat it as a review case. Once final, the canonical record bytes are hashed (SHA-256) and the hash is written to the SnapshotAnchor contract on Flare; the anchored record is the settlement record even if reports change afterwards (matchesCurrent then reads false).","verify":["Every METAR in the day is listed with its raw text; compare it with the independent archives linked under links.external (IEM ASOS archive, Ogimet).","GET links.record for the canonical record bytes, SHA-256 them and compare with anchor.sha256; call SnapshotAnchor.isAnchored(sha256) on Flare (anchor.contract, anchor.chainId) to confirm the hash is on-chain. anchor.explorer opens the anchoring transaction.","Permalink pattern for market rules: https://weathermarket.io/station/ZMCK/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/ZMCK/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for ZMCK for the contract date (station-local calendar day), as published at https://weathermarket.io/station/ZMCK/YYYY-MM-DD with every observation used, the finality status and the Flare anchor of the record. The daily value is the extreme over the hourly and special METAR reports in that day; a short-lived peak between reports may be missed. If the record is not final and settleable by the resolution deadline, the market is flagged for review."},"links":{"html":"https://weathermarket.io/station/ZMCK/2026-10-28","json":"https://weathermarket.io/api/station/ZMCK/2026-10-28","record":"https://weathermarket.io/api/station/ZMCK/2026-10-28?format=record","prev":"https://weathermarket.io/station/ZMCK/2026-10-27","next":"https://weathermarket.io/station/ZMCK/2026-10-29","station":"https://weathermarket.io/station/ZMCK","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=ZMCK&data=metar&year1=2026&month1=10&day1=27&year2=2026&month2=10&day2=29&tz=Etc%2FUTC&format=onlycomma&latlon=no&elev=no&missing=M&trace=T&direct=no&report_type=3&report_type=4","ogimet":"https://www.ogimet.com/display_metars2.php?lang=en&lugar=ZMCK&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=27&hora=16&anof=2026&mesf=10&dayf=28&horaf=15&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=ZMCK"}}}