{"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":"2026-10-18","window":{"date":"2026-10-18","timezone":"America/New_York","dayStartUtc":"2026-10-18T04:00:00.000Z","dayEndUtc":"2026-10-19T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":11.1,"tmaxAt":"2026-10-18T18:54:00.000Z","tmin":2.8,"tminAt":"2026-10-18T05:54:00.000Z","tavg":7.2,"humidityMean":53.6,"windMean":2.6,"windMax":4.6,"windMaxAt":"2026-10-18T23:54:00.000Z","precipObservedCount":0,"nObservations":24,"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":"2026-10-18T18:54:00.000Z","obsTimeLocal":"2026-10-18T14:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181854Z 12005KT 10SM FEW250 11/M03 A3056 RMK AO2 SLP348 T01111028 $","temp":11.1,"dewpoint":-2.8,"humidity":38,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-18T05:54:00.000Z","obsTimeLocal":"2026-10-18T01:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180554Z 00000KT 10SM CLR 03/M04 A3045 RMK AO2 SLP310 T00281044 10072 20028 53025","temp":2.8,"dewpoint":-4.4,"humidity":59,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-18T23:54:00.000Z","obsTimeLocal":"2026-10-18T19:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 182354Z 16009KT 10SM FEW250 09/02 A3056 RMK AO2 SLP348 T00940017 10117 20089 53005 $","temp":9.4,"dewpoint":1.7,"humidity":59,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-19T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"ff91edb53eaff3cd","lastChangedAt":"2026-10-19T03:59:38.407Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KBOS/2026-10-18?format=record","status":"anchored","sha256":"6cd1332f00d741fdd715c423ae599d6f22f6898b2b1806cb315c5a6f5c796d41","revision":"ff91edb53eaff3cd","flareTxHash":"0x0979db42477d6b5889c9056db8604e20986724061f63977cbf2f27725122e23c","flareBlock":72462385,"anchoredAt":"2026-10-19T07:01:49.841Z","explorer":"https://flare-explorer.flare.network/tx/0x0979db42477d6b5889c9056db8604e20986724061f63977cbf2f27725122e23c","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":24,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-18T18:54:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-18T05:54:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":11.1,"tmin":2.8,"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":11.67,"tmin":2.78,"precip":0,"corrected":false,"issuedAt":"2026-10-19T05:31:00.000Z","html":"https://weathermarket.io/nws-cli/KBOS/2026-10-18","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-10-18"},"observations":[{"obsTimeUtc":"2026-10-18T04:54:00.000Z","obsTimeLocal":"2026-10-18T00:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180454Z 33005KT 10SM CLR 04/M05 A3042 RMK AO2 SLP301 T00391050 401670039","temp":3.9,"dewpoint":-5,"humidity":52,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T05:54:00.000Z","obsTimeLocal":"2026-10-18T01:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180554Z 00000KT 10SM CLR 03/M04 A3045 RMK AO2 SLP310 T00281044 10072 20028 53025","temp":2.8,"dewpoint":-4.4,"humidity":59,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T06:54:00.000Z","obsTimeLocal":"2026-10-18T02:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180654Z 27005KT 10SM CLR 03/M04 A3048 RMK AO2 SLP319 T00281044 $","temp":2.8,"dewpoint":-4.4,"humidity":59,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T07:54:00.000Z","obsTimeLocal":"2026-10-18T03:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180754Z 31005KT 10SM CLR 03/M04 A3049 RMK AO2 SLP325 T00331044 $","temp":3.3,"dewpoint":-4.4,"humidity":57,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T08:54:00.000Z","obsTimeLocal":"2026-10-18T04:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180854Z 33003KT 10SM CLR 03/M04 A3051 RMK AO2 SLP331 T00281044 51021 $","temp":2.8,"dewpoint":-4.4,"humidity":59,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T09:54:00.000Z","obsTimeLocal":"2026-10-18T05:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 180954Z 32004KT 10SM CLR 03/M04 A3053 RMK AO2 SLP337 T00331044 $","temp":3.3,"dewpoint":-4.4,"humidity":57,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T10:54:00.000Z","obsTimeLocal":"2026-10-18T06:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181054Z 31004KT 10SM FEW040 03/M04 A3055 RMK AO2 SLP345 T00331039 $","temp":3.3,"dewpoint":-3.9,"humidity":59,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T11:54:00.000Z","obsTimeLocal":"2026-10-18T07:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181154Z 33006KT 10SM FEW040 04/M04 A3057 RMK AO2 SLP350 T00391039 10039 20028 51019 $","temp":3.9,"dewpoint":-3.9,"humidity":57,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T12:54:00.000Z","obsTimeLocal":"2026-10-18T08:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181254Z 33005KT 10SM FEW040 06/M03 A3058 RMK AO2 SLP354 T00611033 $","temp":6.1,"dewpoint":-3.3,"humidity":51,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T13:54:00.000Z","obsTimeLocal":"2026-10-18T09:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181354Z 03006KT 10SM FEW040 08/M04 A3058 RMK AO2 SLP356 T00831039 $","temp":8.3,"dewpoint":-3.9,"humidity":42,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T14:54:00.000Z","obsTimeLocal":"2026-10-18T10:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181454Z VRB03KT 10SM FEW040 FEW250 09/M04 A3059 RMK AO2 SLP359 T00941044 51009 $","temp":9.4,"dewpoint":-4.4,"humidity":37,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T15:54:00.000Z","obsTimeLocal":"2026-10-18T11:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181554Z 20004KT 10SM FEW250 09/M03 A3059 RMK AO2 SLP358 T00941028 $","temp":9.4,"dewpoint":-2.8,"humidity":42,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T16:54:00.000Z","obsTimeLocal":"2026-10-18T12:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181654Z 11004KT 10SM FEW040 FEW250 10/00 A3059 RMK AO2 SLP356 T01000000 $","temp":10,"dewpoint":0,"humidity":50,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T17:54:00.000Z","obsTimeLocal":"2026-10-18T13:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181754Z 13005KT 10SM FEW250 11/M02 A3057 RMK AO2 SLP352 T01061017 10106 20039 58007 $","temp":10.6,"dewpoint":-1.7,"humidity":42,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T18:54:00.000Z","obsTimeLocal":"2026-10-18T14:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181854Z 12005KT 10SM FEW250 11/M03 A3056 RMK AO2 SLP348 T01111028 $","temp":11.1,"dewpoint":-2.8,"humidity":38,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T19:54:00.000Z","obsTimeLocal":"2026-10-18T15:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 181954Z 12003KT 10SM FEW250 11/M02 A3056 RMK AO2 SLP347 T01111017 $","temp":11.1,"dewpoint":-1.7,"humidity":41,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T20:54:00.000Z","obsTimeLocal":"2026-10-18T16:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 182054Z 09003KT 10SM FEW250 11/M01 A3055 RMK AO2 SLP344 T01111006 56008 $","temp":11.1,"dewpoint":-0.6,"humidity":44,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T21:54:00.000Z","obsTimeLocal":"2026-10-18T17:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 182154Z 11006KT 10SM FEW250 10/01 A3055 RMK AO2 SLP343 T01000011 $","temp":10,"dewpoint":1.1,"humidity":54,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T22:54:00.000Z","obsTimeLocal":"2026-10-18T18:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 182254Z 14007KT 10SM FEW250 10/02 A3055 RMK AO2 SLP343 T01000022 $","temp":10,"dewpoint":2.2,"humidity":58,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T23:54:00.000Z","obsTimeLocal":"2026-10-18T19:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 182354Z 16009KT 10SM FEW250 09/02 A3056 RMK AO2 SLP348 T00940017 10117 20089 53005 $","temp":9.4,"dewpoint":1.7,"humidity":59,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T00:54:00.000Z","obsTimeLocal":"2026-10-18T20:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190054Z 17007KT 10SM CLR 08/02 A3057 RMK AO2 SLP352 T00780022 $","temp":7.8,"dewpoint":2.2,"humidity":68,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T01:54:00.000Z","obsTimeLocal":"2026-10-18T21:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190154Z 19008KT 10SM FEW250 08/02 A3057 RMK AO2 SLP351 T00780022 $","temp":7.8,"dewpoint":2.2,"humidity":68,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T02:54:00.000Z","obsTimeLocal":"2026-10-18T22:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190254Z 18008KT 10SM CLR 08/02 A3056 RMK AO2 SLP348 T00780017 50000 $","temp":7.8,"dewpoint":1.7,"humidity":65,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T03:54:00.000Z","obsTimeLocal":"2026-10-18T23:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190354Z 18005KT 10SM CLR 07/02 A3056 RMK AO2 SLP347 T00720017 $","temp":7.2,"dewpoint":1.7,"humidity":68,"wind":2.6,"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/2026-10-18","json":"https://weathermarket.io/api/station/KBOS/2026-10-18","record":"https://weathermarket.io/api/station/KBOS/2026-10-18?format=record","prev":"https://weathermarket.io/station/KBOS/2026-10-17","next":"https://weathermarket.io/station/KBOS/2026-10-19","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=18&year2=2026&month2=10&day2=20&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=18&hora=4&anof=2026&mesf=10&dayf=19&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KBOS"}}}