{"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":"2026-10-19","window":{"date":"2026-10-19","timezone":"America/New_York","dayStartUtc":"2026-10-19T04:00:00.000Z","dayEndUtc":"2026-10-20T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":13.3,"tmaxAt":"2026-10-19T17:54:00.000Z","tmin":5.6,"tminAt":"2026-10-19T10:54:00.000Z","tavg":9.7,"humidityMean":72.3,"windMean":2.4,"windMax":4.1,"windMaxAt":"2026-10-19T16:54:00.000Z","precipObservedCount":0,"nObservations":23,"maxGapMinutes":120,"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":"2026-10-19T17:54:00.000Z","obsTimeLocal":"2026-10-19T13:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191754Z 08007KT 10SM FEW040 FEW250 13/06 A3043 RMK AO2 SLP302 T01330061 10133 20061 58024","temp":13.3,"dewpoint":6.1,"humidity":62,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-19T10:54:00.000Z","obsTimeLocal":"2026-10-19T06:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191054Z 00000KT 10SM FEW250 06/02 A3052 RMK AO2 SLP334 T00560022 $","temp":5.6,"dewpoint":2.2,"humidity":79,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-19T16:54:00.000Z","obsTimeLocal":"2026-10-19T12:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191654Z 09008KT 10SM FEW040 FEW250 13/06 A3046 RMK AO2 SLP314 T01280056","temp":12.8,"dewpoint":5.6,"humidity":62,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-20T07:00:00.000Z","settleable":false,"coverage":{"ok":false,"maxGapMinutes":120,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":["coverage_gap: longest stretch without a report was 120 min, above 90 min (station normal interval 60 + 30)"],"holdHours":3},"revision":"e39ef84959f74f6d","lastChangedAt":"2026-10-20T03:57:38.532Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KBOS/2026-10-19?format=record","status":"anchored","sha256":"db5672fe624ec4f70ce943a83f14aae8e548f4300f6a95a7244eabe875d22454","revision":"e39ef84959f74f6d","flareTxHash":"0x5dadd198ab02b1208dd3cedbddcce22c8add2ebc9a96a8f820058fbc7ac6763d","flareBlock":72538083,"anchoredAt":"2026-10-20T07:02:08.709Z","explorer":"https://flare-explorer.flare.network/tx/0x5dadd198ab02b1208dd3cedbddcce22c8add2ebc9a96a8f820058fbc7ac6763d","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":23,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-19T17:54:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-19T10:54:00.000Z","flag":"good","reasons":["step_not_tested: previous valid report 120 min earlier (> 70)"]},"anyFlagged":false},"excludingBad":{"tmax":13.3,"tmin":5.6,"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":4.44,"precip":0,"corrected":false,"issuedAt":"2026-10-20T06:21:00.000Z","html":"https://weathermarket.io/nws-cli/KBOS/2026-10-19","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-10-19"},"observations":[{"obsTimeUtc":"2026-10-19T04:54:00.000Z","obsTimeLocal":"2026-10-19T00:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190454Z 19006KT 10SM CLR 07/02 A3055 RMK AO2 SLP345 T00670022 401170028 $","temp":6.7,"dewpoint":2.2,"humidity":73,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T05:54:00.000Z","obsTimeLocal":"2026-10-19T01:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190554Z 19005KT 10SM CLR 06/02 A3055 RMK AO2 SLP343 T00610022 10094 20061 58005 $","temp":6.1,"dewpoint":2.2,"humidity":76,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T06:54:00.000Z","obsTimeLocal":"2026-10-19T02:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190654Z 23004KT 10SM CLR 07/02 A3054 RMK AO2 SLP342 T00670022 $","temp":6.7,"dewpoint":2.2,"humidity":73,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T07:54:00.000Z","obsTimeLocal":"2026-10-19T03:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190754Z 21003KT 10SM CLR 07/02 A3054 RMK AO2 SLP340 T00670017 $","temp":6.7,"dewpoint":1.7,"humidity":70,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T08:54:00.000Z","obsTimeLocal":"2026-10-19T04:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 190854Z 00000KT 10SM CLR 07/02 A3053 RMK AO2 SLP337 T00670022 58006 $","temp":6.7,"dewpoint":2.2,"humidity":73,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T10:54:00.000Z","obsTimeLocal":"2026-10-19T06:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191054Z 00000KT 10SM FEW250 06/02 A3052 RMK AO2 SLP334 T00560022 $","temp":5.6,"dewpoint":2.2,"humidity":79,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T11:54:00.000Z","obsTimeLocal":"2026-10-19T07:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191154Z 00000KT 10SM FEW250 06/03 A3053 RMK AO2 SLP336 T00610033 10072 20044 55000 $","temp":6.1,"dewpoint":3.3,"humidity":82,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T12:54:00.000Z","obsTimeLocal":"2026-10-19T08:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191254Z 00000KT 10SM SCT250 09/04 A3051 RMK AO2 SLP331 T00940044","temp":9.4,"dewpoint":4.4,"humidity":71,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T13:54:00.000Z","obsTimeLocal":"2026-10-19T09:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191354Z VRB03KT 10SM FEW250 12/04 A3050 RMK AO2 SLP328 T01170044","temp":11.7,"dewpoint":4.4,"humidity":61,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T14:54:00.000Z","obsTimeLocal":"2026-10-19T10:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191454Z 07006KT 10SM FEW250 13/05 A3050 RMK AO2 SLP326 T01280050 56010","temp":12.8,"dewpoint":5,"humidity":59,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T15:54:00.000Z","obsTimeLocal":"2026-10-19T11:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191554Z 07005KT 10SM FEW040 FEW250 13/06 A3049 RMK AO2 SLP325 T01280056","temp":12.8,"dewpoint":5.6,"humidity":62,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T16:54:00.000Z","obsTimeLocal":"2026-10-19T12:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191654Z 09008KT 10SM FEW040 FEW250 13/06 A3046 RMK AO2 SLP314 T01280056","temp":12.8,"dewpoint":5.6,"humidity":62,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T17:54:00.000Z","obsTimeLocal":"2026-10-19T13:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191754Z 08007KT 10SM FEW040 FEW250 13/06 A3043 RMK AO2 SLP302 T01330061 10133 20061 58024","temp":13.3,"dewpoint":6.1,"humidity":62,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T18:54:00.000Z","obsTimeLocal":"2026-10-19T14:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191854Z 08008KT 10SM FEW040 FEW250 13/07 A3039 RMK AO2 SLP290 T01280067","temp":12.8,"dewpoint":6.7,"humidity":66,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T19:54:00.000Z","obsTimeLocal":"2026-10-19T15:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 191954Z 08008KT 10SM FEW040 FEW250 13/07 A3037 RMK AO2 SLP283 T01280067","temp":12.8,"dewpoint":6.7,"humidity":66,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T20:54:00.000Z","obsTimeLocal":"2026-10-19T16:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 192054Z 07007KT 10SM FEW070 FEW250 12/07 A3036 RMK AO2 SLP279 T01220067 56023","temp":12.2,"dewpoint":6.7,"humidity":69,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T21:54:00.000Z","obsTimeLocal":"2026-10-19T17:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 192154Z 08006KT 10SM FEW070 FEW250 11/06 A3035 RMK AO2 SLP275 T01110061","temp":11.1,"dewpoint":6.1,"humidity":71,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T22:54:00.000Z","obsTimeLocal":"2026-10-19T18:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 192254Z 02006KT 10SM FEW250 10/06 A3033 RMK AO2 SLP270 T01000061","temp":10,"dewpoint":6.1,"humidity":77,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T23:54:00.000Z","obsTimeLocal":"2026-10-19T19:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 192354Z 01004KT 10SM FEW250 10/07 A3032 RMK AO2 SLP265 T01000067 10133 20094 58014","temp":10,"dewpoint":6.7,"humidity":80,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T00:54:00.000Z","obsTimeLocal":"2026-10-19T20:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 200054Z 01004KT 10SM CLR 09/06 A3029 RMK AO2 SLP256 T00890061","temp":8.9,"dewpoint":6.1,"humidity":83,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T01:54:00.000Z","obsTimeLocal":"2026-10-19T21:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 200154Z 35005KT 10SM CLR 09/07 A3028 RMK AO2 SLP254 T00940067","temp":9.4,"dewpoint":6.7,"humidity":83,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T02:54:00.000Z","obsTimeLocal":"2026-10-19T22:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 200254Z 01006KT 10SM FEW250 09/06 A3028 RMK AO2 SLP251 T00890061 56014","temp":8.9,"dewpoint":6.1,"humidity":83,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T03:54:00.000Z","obsTimeLocal":"2026-10-19T23:54:00-04:00","metarType":"METAR","raw":"METAR KBOS 200354Z 35005KT 10SM FEW250 09/06 A3025 RMK AO2 SLP244 T00890061","temp":8.9,"dewpoint":6.1,"humidity":83,"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/2026-10-19","json":"https://weathermarket.io/api/station/KBOS/2026-10-19","record":"https://weathermarket.io/api/station/KBOS/2026-10-19?format=record","prev":"https://weathermarket.io/station/KBOS/2026-10-18","next":"https://weathermarket.io/station/KBOS/2026-10-20","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=19&year2=2026&month2=10&day2=21&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=19&hora=4&anof=2026&mesf=10&dayf=20&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KBOS"}}}