{"station":{"icao":"CYUL","city":{"slug":"montreal","name":"Montreal","country":"Canada"},"timezone":"America/Toronto","lat":45.5,"lon":-73.57,"us":false,"html":"https://weathermarket.io/station/CYUL","json":"https://weathermarket.io/api/station/CYUL","nwsCli":null},"date":"2026-10-31","window":{"date":"2026-10-31","timezone":"America/Toronto","dayStartUtc":"2026-10-31T04:00:00.000Z","dayEndUtc":"2026-11-01T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":8,"tmaxAt":"2026-10-31T18:00:00.000Z","tmin":1,"tminAt":"2026-10-31T11:00:00.000Z","tavg":4.8,"humidityMean":57.5,"windMean":2.9,"windMax":5.1,"windMaxAt":"2026-10-31T05:00:00.000Z","precipObservedCount":0,"nObservations":27,"maxGapMinutes":60,"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":"2026-10-31T18:00:00.000Z","obsTimeLocal":"2026-10-31T14:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311800Z CCA 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304","temp":8,"dewpoint":-5,"humidity":39,"wind":3.6,"precipObserved":false,"correctedAt":"2026-10-31T18:09:38.785Z","originalRaw":"METAR CYUL 311800Z 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304"},"tmin":{"obsTimeUtc":"2026-10-31T11:00:00.000Z","obsTimeLocal":"2026-10-31T07:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311100Z 29004KT 30SM FEW050 01/M02 A3039 RMK SC1 SLP294","temp":1,"dewpoint":-2,"humidity":80,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-31T05:00:00.000Z","obsTimeLocal":"2026-10-31T01:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310500Z 36010G16KT 15SM BKN040 06/M00 A3030 RMK SC7 SLP264","temp":6,"dewpoint":0,"humidity":65,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-11-01T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"322f0fc6a0b01d87","lastChangedAt":"2026-11-01T03:11:38.575Z","corrections":[{"obsTimeUtc":"2026-10-31T18:00:00.000Z","correctedAt":"2026-10-31T18:09:38.785Z","original":"METAR CYUL 311800Z 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304","corrected":"METAR CYUL 311800Z CCA 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304"}],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/CYUL/2026-10-31?format=record","status":"anchored","sha256":"957f6e53e0e6def3b510b331caa350b2589421726c07268d6a33a3b505be66d3","revision":"322f0fc6a0b01d87","flareTxHash":"0x6fa64d49a386fbb7f62f97942077a9f959e3c79ec17ef634aa0772fa91e78f16","flareBlock":73833174,"anchoredAt":"2026-11-05T21:01:40.919Z","explorer":"https://flare-explorer.flare.network/tx/0x6fa64d49a386fbb7f62f97942077a9f959e3c79ec17ef634aa0772fa91e78f16","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":27,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-31T18:00:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-31T11:00:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":8,"tmin":1,"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":"2026-10-31T04:00:00.000Z","obsTimeLocal":"2026-10-31T00:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310400Z 32005KT 15SM BKN050 06/M01 A3028 RMK SC7 SLP258","temp":6,"dewpoint":-1,"humidity":61,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T05:00:00.000Z","obsTimeLocal":"2026-10-31T01:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310500Z 36010G16KT 15SM BKN040 06/M00 A3030 RMK SC7 SLP264","temp":6,"dewpoint":0,"humidity":65,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T06:00:00.000Z","obsTimeLocal":"2026-10-31T02:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310600Z 32008KT 15SM FEW070 05/M00 A3031 RMK AC1 AC TR SLP268","temp":5,"dewpoint":0,"humidity":70,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T07:00:00.000Z","obsTimeLocal":"2026-10-31T03:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310700Z 33008KT 15SM SKC 04/M01 A3033 RMK SLP275","temp":4,"dewpoint":-1,"humidity":70,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T08:00:00.000Z","obsTimeLocal":"2026-10-31T04:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310800Z 31007KT 15SM SKC 03/M02 A3033 RMK SLP275","temp":3,"dewpoint":-2,"humidity":70,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T08:27:00.000Z","obsTimeLocal":"2026-10-31T04:27:00-04:00","metarType":"SPECI","raw":"SPECI CYUL 310827Z 31006KT 15SM FEW060 02/M02 A3034 RMK SC1 SC TR SLP277","temp":2,"dewpoint":-2,"humidity":75,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T09:00:00.000Z","obsTimeLocal":"2026-10-31T05:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 310900Z 30005KT 15SM FEW060 02/M02 A3035 RMK SC1 SC TR SLP282","temp":2,"dewpoint":-2,"humidity":75,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T10:00:00.000Z","obsTimeLocal":"2026-10-31T06:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311000Z 31005KT 15SM FEW052 02/M02 A3037 RMK SC1 SLP289","temp":2,"dewpoint":-2,"humidity":75,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T11:00:00.000Z","obsTimeLocal":"2026-10-31T07:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311100Z 29004KT 30SM FEW050 01/M02 A3039 RMK SC1 SLP294","temp":1,"dewpoint":-2,"humidity":80,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T12:00:00.000Z","obsTimeLocal":"2026-10-31T08:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311200Z 31006KT 30SM FEW048 02/M02 A3042 RMK SC1 SLP303","temp":2,"dewpoint":-2,"humidity":75,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T13:00:00.000Z","obsTimeLocal":"2026-10-31T09:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311300Z 34010KT 30SM FEW025 FEW050 04/M02 A3043 RMK SC1SC1 SC TR SC TR SLP309","temp":4,"dewpoint":-2,"humidity":65,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T14:00:00.000Z","obsTimeLocal":"2026-10-31T10:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311400Z 34009KT 30SM FEW025 FEW250 05/M04 A3043 RMK SC1CI1 SC TR CI TR SLP309","temp":5,"dewpoint":-4,"humidity":52,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T15:00:00.000Z","obsTimeLocal":"2026-10-31T11:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311500Z 34009G15KT 310V010 15SM FEW025 FEW035 FEW250 06/M04 A3043 RMK CF1SC1CI1 CF TR SC TR CI TR SLP309","temp":6,"dewpoint":-4,"humidity":49,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T16:00:00.000Z","obsTimeLocal":"2026-10-31T12:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311600Z 35008G16KT 15SM FEW025 FEW040 FEW250 07/M04 A3044 RMK CF1SC1CI1 CI TR SLP310","temp":7,"dewpoint":-4,"humidity":45,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T17:00:00.000Z","obsTimeLocal":"2026-10-31T13:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311700Z 30004KT 290V350 15SM SCT052 BKN250 07/M06 A3042 RMK SC3CI2 SLP305","temp":7,"dewpoint":-6,"humidity":39,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T18:00:00.000Z","obsTimeLocal":"2026-10-31T14:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311800Z CCA 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304","temp":8,"dewpoint":-5,"humidity":39,"wind":3.6,"precipObserved":false,"correctedAt":"2026-10-31T18:09:38.785Z","originalRaw":"METAR CYUL 311800Z 32007KT 15SM BKN060 08/M05 A3042 RMK SC7 SLP304"},{"obsTimeUtc":"2026-10-31T19:00:00.000Z","obsTimeLocal":"2026-10-31T15:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 311900Z 30010KT 280V350 30SM BKN056 08/M05 A3042 RMK SC7 SLP304","temp":8,"dewpoint":-5,"humidity":39,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T20:00:00.000Z","obsTimeLocal":"2026-10-31T16:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 312000Z 28008KT 15SM BKN060 BKN080 08/M05 A3041 RMK SC6AC1 SLP302","temp":8,"dewpoint":-5,"humidity":39,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T21:00:00.000Z","obsTimeLocal":"2026-10-31T17:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 312100Z 34006KT 15SM SCT056 BKN180 07/M05 A3042 RMK SC4AC2 SLP306","temp":7,"dewpoint":-5,"humidity":42,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T22:00:00.000Z","obsTimeLocal":"2026-10-31T18:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 312200Z 33003KT 15SM SCT058 BKN160 07/M05 A3043 RMK SC4AC2 SLP307","temp":7,"dewpoint":-5,"humidity":42,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T23:00:00.000Z","obsTimeLocal":"2026-10-31T19:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 312300Z 29003KT 15SM BKN058 07/M04 A3044 RMK SC7 SLP310","temp":7,"dewpoint":-4,"humidity":45,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T00:00:00.000Z","obsTimeLocal":"2026-10-31T20:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 010000Z 30004KT 15SM SCT060 SCT250 06/M04 A3044 RMK SC3CI1 SLP311","temp":6,"dewpoint":-4,"humidity":49,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T01:00:00.000Z","obsTimeLocal":"2026-10-31T21:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 010100Z 27003KT 15SM BKN055 BKN250 04/M04 A3045 RMK SC6CI1 CI TR SLP313","temp":4,"dewpoint":-4,"humidity":56,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T02:00:00.000Z","obsTimeLocal":"2026-10-31T22:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 010200Z 33002KT 15SM FEW052 05/M04 A3045 RMK SC1 SC TR SLP314","temp":5,"dewpoint":-4,"humidity":52,"wind":1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T02:34:00.000Z","obsTimeLocal":"2026-10-31T22:34:00-04:00","metarType":"SPECI","raw":"SPECI CYUL 010234Z 00000KT 15SM FEW050 02/M04 A3045 RMK SC1 SC TR SLP313","temp":2,"dewpoint":-4,"humidity":64,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T03:00:00.000Z","obsTimeLocal":"2026-10-31T23:00:00-04:00","metarType":"METAR","raw":"METAR CYUL 010300Z 00000KT 15SM SKC 04/M04 A3044 RMK SLP312","temp":4,"dewpoint":-4,"humidity":56,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T03:08:00.000Z","obsTimeLocal":"2026-10-31T23:08:00-04:00","metarType":"SPECI","raw":"SPECI CYUL 010308Z 00000KT 15SM SKC 02/M04 A3045 RMK SLP313","temp":2,"dewpoint":-4,"humidity":64,"wind":0,"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/CYUL/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/CYUL/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for CYUL for the contract date (station-local calendar day), as published at https://weathermarket.io/station/CYUL/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/CYUL/2026-10-31","json":"https://weathermarket.io/api/station/CYUL/2026-10-31","record":"https://weathermarket.io/api/station/CYUL/2026-10-31?format=record","prev":"https://weathermarket.io/station/CYUL/2026-10-30","next":"https://weathermarket.io/station/CYUL/2026-11-01","station":"https://weathermarket.io/station/CYUL","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=CYUL&data=metar&year1=2026&month1=10&day1=31&year2=2026&month2=11&day2=2&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=CYUL&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=31&hora=4&anof=2026&mesf=11&dayf=1&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=CYUL"}}}