{"station":{"icao":"KSEA","city":{"slug":"seattle","name":"Seattle","country":"United States"},"timezone":"America/Los_Angeles","lat":47.61,"lon":-122.33,"us":true,"html":"https://weathermarket.io/station/KSEA","json":"https://weathermarket.io/api/station/KSEA","nwsCli":{"html":"https://weathermarket.io/nws-cli/KSEA","json":"https://weathermarket.io/api/nws-cli/KSEA"}},"date":"2026-10-20","window":{"date":"2026-10-20","timezone":"America/Los_Angeles","dayStartUtc":"2026-10-20T07:00:00.000Z","dayEndUtc":"2026-10-21T07:00:00.000Z","utcOffsetStart":"-07:00","utcOffsetEnd":"-07:00","hours":24},"complete":true,"values":{"tmax":16.7,"tmaxAt":"2026-10-20T22:53:00.000Z","tmin":8.3,"tminAt":"2026-10-20T10:45:00.000Z","tavg":11,"humidityMean":79.9,"windMean":4.2,"windMax":7.2,"windMaxAt":"2026-10-20T17:53:00.000Z","precipObservedCount":0,"nObservations":28,"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":"2026-10-20T22:53:00.000Z","obsTimeLocal":"2026-10-20T15:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 202253Z 01008KT 10SM FEW250 17/07 A3004 RMK AO2 SLP180 T01670072","temp":16.7,"dewpoint":7.2,"humidity":53,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-20T10:45:00.000Z","obsTimeLocal":"2026-10-20T03:45:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 201045Z 01008KT 10SM SCT009 08/07 A3008 RMK AO2 T00830072 $","temp":8.3,"dewpoint":7.2,"humidity":93,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-20T17:53:00.000Z","obsTimeLocal":"2026-10-20T10:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201753Z 01014KT 10SM SCT010 11/07 A3011 RMK AO2 SLP202 SCT V BKN T01110072 10117 20083 50004","temp":11.1,"dewpoint":7.2,"humidity":77,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-21T10:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"c8a5781f0800fd6f","lastChangedAt":"2026-10-21T06:56:38.468Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KSEA/2026-10-20?format=record","status":"anchored","sha256":"969b80cf257d0676bb2ec9e0c70d27ee61b152983d0a32ff35ff5f552d53333f","revision":"c8a5781f0800fd6f","flareTxHash":"0x42885942905a25b19717f8fc7857efc220f596fecdf3bd9f5122cee821bb6876","flareBlock":73833169,"anchoredAt":"2026-11-05T21:01:40.919Z","explorer":"https://flare-explorer.flare.network/tx/0x42885942905a25b19717f8fc7857efc220f596fecdf3bd9f5122cee821bb6876","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":28,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-20T22:53:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-20T10:45:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":16.7,"tmin":8.3,"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":16.67,"tmin":7.78,"precip":0,"corrected":false,"issuedAt":"2026-10-21T08:26:00.000Z","html":"https://weathermarket.io/nws-cli/KSEA/2026-10-20","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-10-20"},"observations":[{"obsTimeUtc":"2026-10-20T07:53:00.000Z","obsTimeLocal":"2026-10-20T00:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 200753Z 05007KT 10SM CLR 09/07 A3007 RMK AO2 SLP190 T00940072 401670078 $","temp":9.4,"dewpoint":7.2,"humidity":86,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T08:53:00.000Z","obsTimeLocal":"2026-10-20T01:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 200853Z 05006KT 10SM CLR 09/07 A3007 RMK AO2 SLP189 T00940067 50003 $","temp":9.4,"dewpoint":6.7,"humidity":83,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T09:53:00.000Z","obsTimeLocal":"2026-10-20T02:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 200953Z 02008KT 10SM CLR 09/07 A3008 RMK AO2 SLP191 T00890072 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T10:45:00.000Z","obsTimeLocal":"2026-10-20T03:45:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 201045Z 01008KT 10SM SCT009 08/07 A3008 RMK AO2 T00830072 $","temp":8.3,"dewpoint":7.2,"humidity":93,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T10:53:00.000Z","obsTimeLocal":"2026-10-20T03:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201053Z 01006KT 10SM BKN009 08/07 A3008 RMK AO2 SLP193 T00830072 $","temp":8.3,"dewpoint":7.2,"humidity":93,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T11:48:00.000Z","obsTimeLocal":"2026-10-20T04:48:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 201148Z 04008KT 10SM OVC004 09/08 A3008 RMK AO2 $","temp":9,"dewpoint":8,"humidity":93,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T11:53:00.000Z","obsTimeLocal":"2026-10-20T04:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201153Z 05007KT 10SM OVC004 09/08 A3008 RMK AO2 SLP192 T00890078 10106 20078 51001 $","temp":8.9,"dewpoint":7.8,"humidity":93,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T12:11:00.000Z","obsTimeLocal":"2026-10-20T05:11:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 201211Z 04009KT 10SM OVC006 09/08 A3008 RMK AO2 T00890078 $","temp":8.9,"dewpoint":7.8,"humidity":93,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T12:53:00.000Z","obsTimeLocal":"2026-10-20T05:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201253Z 03009KT 8SM BKN005 OVC010 09/07 A3008 RMK AO2 SLP194 T00890072 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T13:53:00.000Z","obsTimeLocal":"2026-10-20T06:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201353Z 02012KT 8SM BKN005 OVC009 08/07 A3010 RMK AO2 SLP200 T00830072","temp":8.3,"dewpoint":7.2,"humidity":93,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T14:53:00.000Z","obsTimeLocal":"2026-10-20T07:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201453Z 02010KT 6SM BR OVC005 08/07 A3010 RMK AO2 SLP200 T00830072 51006","temp":8.3,"dewpoint":7.2,"humidity":93,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T15:53:00.000Z","obsTimeLocal":"2026-10-20T08:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201553Z 03009KT 6SM BR OVC006 09/07 A3011 RMK AO2 SLP202 CIG 004V008 T00890072","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T16:53:00.000Z","obsTimeLocal":"2026-10-20T09:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201653Z 03010KT 9SM BKN007 10/08 A3012 RMK AO2 SLP207 T01000078","temp":10,"dewpoint":7.8,"humidity":86,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T17:19:00.000Z","obsTimeLocal":"2026-10-20T10:19:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 201719Z 02010KT 10SM BKN010 10/08 A3012 RMK AO2 CIG 009V011 T01000078","temp":10,"dewpoint":7.8,"humidity":86,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T17:53:00.000Z","obsTimeLocal":"2026-10-20T10:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201753Z 01014KT 10SM SCT010 11/07 A3011 RMK AO2 SLP202 SCT V BKN T01110072 10117 20083 50004","temp":11.1,"dewpoint":7.2,"humidity":77,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T18:53:00.000Z","obsTimeLocal":"2026-10-20T11:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201853Z 01012KT 10SM FEW015 13/07 A3010 RMK AO2 SLP200 T01280072","temp":12.8,"dewpoint":7.2,"humidity":69,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T19:53:00.000Z","obsTimeLocal":"2026-10-20T12:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 201953Z 02008KT 10SM FEW250 14/07 A3009 RMK AO2 SLP197 T01390072","temp":13.9,"dewpoint":7.2,"humidity":64,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T20:53:00.000Z","obsTimeLocal":"2026-10-20T13:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 202053Z 01007KT 10SM FEW250 16/07 A3007 RMK AO2 SLP190 T01560072 58012","temp":15.6,"dewpoint":7.2,"humidity":57,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T21:53:00.000Z","obsTimeLocal":"2026-10-20T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 202153Z 35007KT 10SM FEW250 16/07 A3005 RMK AO2 SLP184 T01610072","temp":16.1,"dewpoint":7.2,"humidity":56,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T22:53:00.000Z","obsTimeLocal":"2026-10-20T15:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 202253Z 01008KT 10SM FEW250 17/07 A3004 RMK AO2 SLP180 T01670072","temp":16.7,"dewpoint":7.2,"humidity":53,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-20T23:53:00.000Z","obsTimeLocal":"2026-10-20T16:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 202353Z 35008KT 10SM FEW250 16/08 A3003 RMK AO2 SLP176 T01610078 10167 20111 56014","temp":16.1,"dewpoint":7.8,"humidity":58,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T00:53:00.000Z","obsTimeLocal":"2026-10-20T17:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210053Z 36007KT 10SM FEW250 14/08 A3003 RMK AO2 SLP176 T01390083","temp":13.9,"dewpoint":8.3,"humidity":69,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T01:53:00.000Z","obsTimeLocal":"2026-10-20T18:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210153Z 34005KT 10SM FEW250 12/07 A3003 RMK AO2 SLP176 T01170072","temp":11.7,"dewpoint":7.2,"humidity":74,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T02:53:00.000Z","obsTimeLocal":"2026-10-20T19:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210253Z 35008KT 10SM CLR 11/07 A3003 RMK AO2 SLP175 T01060072 58002","temp":10.6,"dewpoint":7.2,"humidity":79,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T03:53:00.000Z","obsTimeLocal":"2026-10-20T20:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210353Z 36008KT 10SM CLR 11/08 A3003 RMK AO2 SLP175 T01060078","temp":10.6,"dewpoint":7.8,"humidity":83,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T04:53:00.000Z","obsTimeLocal":"2026-10-20T21:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210453Z 02006KT 10SM CLR 12/08 A3002 RMK AO2 SLP172 T01170078","temp":11.7,"dewpoint":7.8,"humidity":77,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T05:53:00.000Z","obsTimeLocal":"2026-10-20T22:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210553Z 03008KT 10SM CLR 11/07 A3002 RMK AO2 SLP171 T01110072 10161 20100 58003","temp":11.1,"dewpoint":7.2,"humidity":77,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-21T06:53:00.000Z","obsTimeLocal":"2026-10-20T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 210653Z 34003KT 10SM CLR 09/07 A3002 RMK AO2 SLP170 T00940072","temp":9.4,"dewpoint":7.2,"humidity":86,"wind":1.5,"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/KSEA/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KSEA/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for KSEA for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KSEA/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/KSEA/2026-10-20","json":"https://weathermarket.io/api/station/KSEA/2026-10-20","record":"https://weathermarket.io/api/station/KSEA/2026-10-20?format=record","prev":"https://weathermarket.io/station/KSEA/2026-10-19","next":"https://weathermarket.io/station/KSEA/2026-10-21","station":"https://weathermarket.io/station/KSEA","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=SEA&data=metar&year1=2026&month1=10&day1=20&year2=2026&month2=10&day2=22&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=KSEA&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=20&hora=7&anof=2026&mesf=10&dayf=21&horaf=6&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KSEA"}}}