{"station":{"icao":"KBOS","city":{"slug":"boston","name":"Boston","country":"United States"},"timezone":"America/New_York","lat":42.36,"lon":-71.06,"us":true,"html":"https://weathermarket.io/station/KBOS","json":"https://weathermarket.io/api/station/KBOS","nwsCli":{"html":"https://weathermarket.io/nws-cli/KBOS","json":"https://weathermarket.io/api/nws-cli/KBOS"}},"date":"2026-10-21","window":{"date":"2026-10-21","timezone":"America/New_York","dayStartUtc":"2026-10-21T04:00:00.000Z","dayEndUtc":"2026-10-22T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":12.8,"tmaxAt":"2026-10-21T16:54:00.000Z","tmin":7.8,"tminAt":"2026-10-21T09:54:00.000Z","tavg":10,"humidityMean":71.5,"windMean":6.6,"windMax":9.8,"windMaxAt":"2026-10-21T18:54:00.000Z","precipObservedCount":0,"nObservations":26,"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":"2026-10-21T16:54:00.000Z","obsTimeLocal":"2026-10-21T12:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211654Z 04015G23KT 10SM FEW020 SCT180 BKN250 13/05 A3025 RMK AO2 PK WND 03027/1636 SLP244 T01280050","temp":12.8,"dewpoint":5,"humidity":59,"wind":7.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-21T09:54:00.000Z","obsTimeLocal":"2026-10-21T05:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210954Z 35008KT 10SM FEW250 08/03 A3029 RMK AO2 SLP256 T00780033","temp":7.8,"dewpoint":3.3,"humidity":73,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-21T18:54:00.000Z","obsTimeLocal":"2026-10-21T14:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211854Z 03019G24KT 10SM FEW027 FEW200 BKN250 12/05 A3021 RMK AO2 SLP229 T01220050","temp":12.2,"dewpoint":5,"humidity":61,"wind":9.8,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-22T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"ad6df7a974c203ad","lastChangedAt":"2026-10-22T03:57:39.597Z","corrections":[{"obsTimeUtc":"2026-10-22T01:54:00.000Z","correctedAt":"2026-10-22T02:18:38.751Z","original":"METAR KBOS 220154Z 34007KT 10SM CLR 11/04 A3012 RMK AO2 SLP200 T01060044","corrected":"METAR KBOS 220154Z COR 34007KT 10SM SCT180 BKN250 11/04 A3012 RMK AO2 SLP200 T01060044"}],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KBOS/2026-10-21?format=record","status":"anchored","sha256":"44be03e4057a065e7719c59a648d9a8bdba50954d5189601de2a2844be951e3c","revision":"ad6df7a974c203ad","flareTxHash":"0xd1820a9490fa0f7d5a2f7c7036f9dd753ea96f4b0d435325aecd2195f0c7bc47","flareBlock":73860312,"anchoredAt":"2026-11-06T05:01:27.405Z","explorer":"https://flare-explorer.flare.network/tx/0xd1820a9490fa0f7d5a2f7c7036f9dd753ea96f4b0d435325aecd2195f0c7bc47","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":26,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-21T16:54:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-21T09:54:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":12.8,"tmin":7.8,"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":{"status":"issued","tmax":13.33,"tmin":7.78,"precip":0,"corrected":false,"issuedAt":"2026-10-22T06:27:00.000Z","html":"https://weathermarket.io/nws-cli/KBOS/2026-10-21","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-10-21"},"observations":[{"obsTimeUtc":"2026-10-21T04:54:00.000Z","obsTimeLocal":"2026-10-21T00:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210454Z 35008KT 10SM FEW250 10/07 A3029 RMK AO2 SLP256 T01000067 401670067","temp":10,"dewpoint":6.7,"humidity":80,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T05:54:00.000Z","obsTimeLocal":"2026-10-21T01:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210554Z 36009KT 10SM FEW250 09/06 A3028 RMK AO2 SLP254 T00940061 10128 20094 58003","temp":9.4,"dewpoint":6.1,"humidity":80,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T06:54:00.000Z","obsTimeLocal":"2026-10-21T02:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210654Z 35009KT 10SM FEW250 09/05 A3027 RMK AO2 SLP249 T00940050","temp":9.4,"dewpoint":5,"humidity":74,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T07:54:00.000Z","obsTimeLocal":"2026-10-21T03:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210754Z 35011KT 10SM FEW250 08/04 A3027 RMK AO2 SLP248 T00830039","temp":8.3,"dewpoint":3.9,"humidity":74,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T08:54:00.000Z","obsTimeLocal":"2026-10-21T04:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210854Z 36010KT 10SM FEW250 08/04 A3028 RMK AO2 SLP254 T00830039 55000","temp":8.3,"dewpoint":3.9,"humidity":74,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T09:54:00.000Z","obsTimeLocal":"2026-10-21T05:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 210954Z 35008KT 10SM FEW250 08/03 A3029 RMK AO2 SLP256 T00780033","temp":7.8,"dewpoint":3.3,"humidity":73,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T10:39:00.000Z","obsTimeLocal":"2026-10-21T06:39:00-04:00","metarType":"SPECI","raw":"SPECI KBOS 211039Z 35010KT 10SM BKN024 BKN250 08/03 A3030 RMK AO2 T00780033","temp":7.8,"dewpoint":3.3,"humidity":73,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T10:54:00.000Z","obsTimeLocal":"2026-10-21T06:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211054Z 35010KT 10SM BKN024 BKN250 08/03 A3029 RMK AO2 SLP257 T00780033","temp":7.8,"dewpoint":3.3,"humidity":73,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T11:54:00.000Z","obsTimeLocal":"2026-10-21T07:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211154Z 35013KT 10SM BKN025 BKN250 08/03 A3030 RMK AO2 SLP260 T00830033 10094 20078 53006","temp":8.3,"dewpoint":3.3,"humidity":71,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T12:54:00.000Z","obsTimeLocal":"2026-10-21T08:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211254Z 36012KT 10SM BKN024 08/04 A3031 RMK AO2 SLP261 T00830039","temp":8.3,"dewpoint":3.9,"humidity":74,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T13:54:00.000Z","obsTimeLocal":"2026-10-21T09:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211354Z 36012KT 10SM BKN023 09/04 A3030 RMK AO2 SLP259 T00940044","temp":9.4,"dewpoint":4.4,"humidity":71,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T14:54:00.000Z","obsTimeLocal":"2026-10-21T10:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211454Z 02017G24KT 10SM BKN019 BKN025 BKN250 11/06 A3029 RMK AO2 SLP256 T01110061 58004","temp":11.1,"dewpoint":6.1,"humidity":71,"wind":8.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T15:02:00.000Z","obsTimeLocal":"2026-10-21T11:02:00-04:00","metarType":"SPECI","raw":"SPECI KBOS 211502Z 03015G24KT 10SM SCT019 SCT025 BKN180 BKN250 11/06 A3029 RMK AO2 SCT025 V BKN T01060061","temp":10.6,"dewpoint":6.1,"humidity":74,"wind":7.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T15:54:00.000Z","obsTimeLocal":"2026-10-21T11:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211554Z 03017KT 10SM FEW020 SCT180 BKN250 11/06 A3028 RMK AO2 SLP251 T01110056","temp":11.1,"dewpoint":5.6,"humidity":69,"wind":8.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T16:54:00.000Z","obsTimeLocal":"2026-10-21T12:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211654Z 04015G23KT 10SM FEW020 SCT180 BKN250 13/05 A3025 RMK AO2 PK WND 03027/1636 SLP244 T01280050","temp":12.8,"dewpoint":5,"humidity":59,"wind":7.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T17:54:00.000Z","obsTimeLocal":"2026-10-21T13:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211754Z 03016G21KT 10SM FEW024 SCT200 BKN250 13/06 A3023 RMK AO2 SLP234 T01280056 10133 20083 58021","temp":12.8,"dewpoint":5.6,"humidity":62,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T18:54:00.000Z","obsTimeLocal":"2026-10-21T14:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211854Z 03019G24KT 10SM FEW027 FEW200 BKN250 12/05 A3021 RMK AO2 SLP229 T01220050","temp":12.2,"dewpoint":5,"humidity":61,"wind":9.8,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T19:54:00.000Z","obsTimeLocal":"2026-10-21T15:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 211954Z 03017KT 10SM FEW026 SCT200 BKN250 12/05 A3020 RMK AO2 PK WND 03027/1915 SLP227 T01170050","temp":11.7,"dewpoint":5,"humidity":63,"wind":8.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T20:54:00.000Z","obsTimeLocal":"2026-10-21T16:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 212054Z 03018KT 10SM FEW026 BKN180 BKN250 11/06 A3020 RMK AO2 SLP225 T01110056 56009","temp":11.1,"dewpoint":5.6,"humidity":69,"wind":9.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T21:54:00.000Z","obsTimeLocal":"2026-10-21T17:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 212154Z 03016KT 10SM FEW023 SCT180 BKN240 11/06 A3019 RMK AO2 SLP222 T01060061","temp":10.6,"dewpoint":6.1,"humidity":74,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T22:54:00.000Z","obsTimeLocal":"2026-10-21T18:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 212254Z COR 03014KT 10SM FEW021 BKN180 BKN230 10/07 A3018 RMK AO2 SLP219 T01000067","temp":10,"dewpoint":6.7,"humidity":80,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T23:54:00.000Z","obsTimeLocal":"2026-10-21T19:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 212354Z 03014KT 10SM FEW021 SCT180 BKN230 11/06 A3016 RMK AO2 SLP211 T01060061 10128 20100 58014","temp":10.6,"dewpoint":6.1,"humidity":74,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T00:54:00.000Z","obsTimeLocal":"2026-10-21T20:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 220054Z 03013G19KT 10SM FEW020 BKN220 BKN250 11/04 A3014 RMK AO2 SLP204 T01110044","temp":11.1,"dewpoint":4.4,"humidity":63,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T01:54:00.000Z","obsTimeLocal":"2026-10-21T21:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 220154Z COR 34007KT 10SM SCT180 BKN250 11/04 A3012 RMK AO2 SLP200 T01060044","temp":10.6,"dewpoint":4.4,"humidity":65,"wind":3.6,"precipObserved":false,"correctedAt":"2026-10-22T02:18:38.751Z","originalRaw":"METAR KBOS 220154Z 34007KT 10SM CLR 11/04 A3012 RMK AO2 SLP200 T01060044"},{"obsTimeUtc":"2026-10-22T02:54:00.000Z","obsTimeLocal":"2026-10-21T22:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 220254Z 35011KT 10SM SCT180 BKN250 10/06 A3011 RMK AO2 SLP194 T01000061 56017","temp":10,"dewpoint":6.1,"humidity":77,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T03:54:00.000Z","obsTimeLocal":"2026-10-21T23:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 220354Z 35011KT 10SM SCT180 BKN250 09/06 A3008 RMK AO2 SLP184 T00940061","temp":9.4,"dewpoint":6.1,"humidity":80,"wind":5.7,"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). US markets usually settle on the official NWS CLI value instead - see the NWS CLI archive for this station; both values are shown side by side.","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/KBOS/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KBOS/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for KBOS for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KBOS/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/KBOS/2026-10-21","json":"https://weathermarket.io/api/station/KBOS/2026-10-21","record":"https://weathermarket.io/api/station/KBOS/2026-10-21?format=record","prev":"https://weathermarket.io/station/KBOS/2026-10-20","next":"https://weathermarket.io/station/KBOS/2026-10-22","station":"https://weathermarket.io/station/KBOS","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=BOS&data=metar&year1=2026&month1=10&day1=21&year2=2026&month2=10&day2=23&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=KBOS&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=21&hora=4&anof=2026&mesf=10&dayf=22&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KBOS"}}}