{"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":"2026-10-16","window":{"date":"2026-10-16","timezone":"America/Los_Angeles","dayStartUtc":"2026-10-16T07:00:00.000Z","dayEndUtc":"2026-10-17T07:00:00.000Z","utcOffsetStart":"-07:00","utcOffsetEnd":"-07:00","hours":24},"complete":true,"values":{"tmax":23.9,"tmaxAt":"2026-10-16T21:53:00.000Z","tmin":8.3,"tminAt":"2026-10-16T13:53:00.000Z","tavg":15.3,"humidityMean":67.2,"windMean":2.1,"windMax":5.1,"windMaxAt":"2026-10-17T06:53:00.000Z","precipObservedCount":0,"nObservations":25,"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":"2026-10-16T21:53:00.000Z","obsTimeLocal":"2026-10-16T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 162153Z 26005KT 10SM FEW200 FEW250 24/04 A3009 RMK AO2 SLP194 T02390039","temp":23.9,"dewpoint":3.9,"humidity":27,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-16T13:53:00.000Z","obsTimeLocal":"2026-10-16T06:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161353Z 00000KT 7SM R16L/3500VP6000FT BCFG FEW001 FEW250 08/08 A3020 RMK AO2 SLP234 FG BANK SE-SW AND NW T00830083 $","temp":8.3,"dewpoint":8.3,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-17T06:53:00.000Z","obsTimeLocal":"2026-10-16T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170653Z 21010KT 10SM OVC250 16/10 A3005 RMK AO2 SLP180 T01560100","temp":15.6,"dewpoint":10,"humidity":69,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-17T10:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"5dfcd43daea79ddb","lastChangedAt":"2026-10-17T06:57:39.403Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KSEA/2026-10-16?format=record","status":"anchored","sha256":"4b7216853539b603840b23819966747931bb76133f75ff80d7a943da0a159b5c","revision":"5dfcd43daea79ddb","flareTxHash":"0x1c4311143fdc1518c504591fdae9da81030beed7e7bb27046d0d2cd7cbd04f21","flareBlock":72317205,"anchoredAt":"2026-10-17T10:01:55.237Z","explorer":"https://flare-explorer.flare.network/tx/0x1c4311143fdc1518c504591fdae9da81030beed7e7bb27046d0d2cd7cbd04f21","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":1,"bad":0,"flagged":[{"obsTimeUtc":"2026-10-16T18:53:00.000Z","flag":"suspect","reasons":["step: temperature changed 6.1 C in 60 min (> 5)"]}]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-16T21:53:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-16T13:53:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":23.9,"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":25,"tmin":7.78,"precip":0,"corrected":false,"issuedAt":"2026-10-17T08:26:00.000Z","html":"https://weathermarket.io/nws-cli/KSEA/2026-10-16","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-10-16"},"observations":[{"obsTimeUtc":"2026-10-16T07:53:00.000Z","obsTimeLocal":"2026-10-16T00:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 160753Z 34004KT 10SM FEW250 11/09 A3025 RMK AO2 SLP250 T01060089 402000100 $","temp":10.6,"dewpoint":8.9,"humidity":89,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T08:53:00.000Z","obsTimeLocal":"2026-10-16T01:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 160853Z 00000KT 10SM CLR 10/08 A3023 RMK AO2 SLP243 T01000083 58009 $","temp":10,"dewpoint":8.3,"humidity":89,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T09:53:00.000Z","obsTimeLocal":"2026-10-16T02:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 160953Z 00000KT 10SM BKN250 09/09 A3023 RMK AO2 SLP244 T00940089 $","temp":9.4,"dewpoint":8.9,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T10:53:00.000Z","obsTimeLocal":"2026-10-16T03:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161053Z 00000KT 10SM BKN250 09/08 A3021 RMK AO2 SLP237 T00940083 $","temp":9.4,"dewpoint":8.3,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T11:53:00.000Z","obsTimeLocal":"2026-10-16T04:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161153Z 14005KT 10SM CLR 09/08 A3020 RMK AO2 SLP232 T00890083 10128 20083 58010 $","temp":8.9,"dewpoint":8.3,"humidity":96,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T12:53:00.000Z","obsTimeLocal":"2026-10-16T05:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161253Z 27003KT 9SM FEW003 09/08 A3021 RMK AO2 SLP235 T00890083 $","temp":8.9,"dewpoint":8.3,"humidity":96,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T13:09:00.000Z","obsTimeLocal":"2026-10-16T06:09:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 161309Z 18003KT 7SM R16L/0700VP6000FT FEW000 SCT002 09/08 A3020 RMK AO2 VIS NW-W 2 FG FEW000 T00890083 $","temp":8.9,"dewpoint":8.3,"humidity":96,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T13:53:00.000Z","obsTimeLocal":"2026-10-16T06:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161353Z 00000KT 7SM R16L/3500VP6000FT BCFG FEW001 FEW250 08/08 A3020 RMK AO2 SLP234 FG BANK SE-SW AND NW T00830083 $","temp":8.3,"dewpoint":8.3,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T14:53:00.000Z","obsTimeLocal":"2026-10-16T07:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161453Z 16003KT 7SM FEW000 SCT250 09/09 A3020 RMK AO2 SLP233 FG FEW000 FG BANK SE-SW-W T00890089 50000","temp":8.9,"dewpoint":8.9,"humidity":100,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T15:53:00.000Z","obsTimeLocal":"2026-10-16T08:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161553Z 15005KT 7SM FEW001 FEW004 SCT210 BKN250 10/09 A3020 RMK AO2 SLP234 T01000094","temp":10,"dewpoint":9.4,"humidity":96,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T16:53:00.000Z","obsTimeLocal":"2026-10-16T09:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161653Z 21003KT 6SM R16L/1000V2400FT BR FEW000 FEW004 SCT210 BKN250 11/11 A3020 RMK AO2 SLP235 VIS SW-NW 1/2 FG FEW000 T01110106","temp":11.1,"dewpoint":10.6,"humidity":97,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T17:53:00.000Z","obsTimeLocal":"2026-10-16T10:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161753Z 15003KT 10SM FEW005 FEW210 BKN250 14/12 A3019 RMK AO2 SLP228 T01390117 10139 20078 58005","temp":13.9,"dewpoint":11.7,"humidity":87,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T18:53:00.000Z","obsTimeLocal":"2026-10-16T11:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161853Z 00000KT 10SM SCT210 BKN250 20/08 A3017 RMK AO2 SLP223 T02000083","temp":20,"dewpoint":8.3,"humidity":47,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T19:53:00.000Z","obsTimeLocal":"2026-10-16T12:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 161953Z 28005KT 10SM FEW030 FEW210 BKN250 22/06 A3014 RMK AO2 SLP213 T02170061","temp":21.7,"dewpoint":6.1,"humidity":36,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T20:53:00.000Z","obsTimeLocal":"2026-10-16T13:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 162053Z 26005KT 10SM FEW030 FEW210 SCT250 22/07 A3012 RMK AO2 SLP204 T02220067 58023","temp":22.2,"dewpoint":6.7,"humidity":37,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T21:53:00.000Z","obsTimeLocal":"2026-10-16T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 162153Z 26005KT 10SM FEW200 FEW250 24/04 A3009 RMK AO2 SLP194 T02390039","temp":23.9,"dewpoint":3.9,"humidity":27,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T22:53:00.000Z","obsTimeLocal":"2026-10-16T15:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 162253Z 25006KT 10SM FEW200 SCT250 24/05 A3007 RMK AO2 SLP188 T02390050","temp":23.9,"dewpoint":5,"humidity":29,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T23:53:00.000Z","obsTimeLocal":"2026-10-16T16:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 162353Z 26004KT 10SM FEW200 BKN250 24/04 A3006 RMK AO2 SLP185 T02390039 10250 20139 56019","temp":23.9,"dewpoint":3.9,"humidity":27,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T00:53:00.000Z","obsTimeLocal":"2026-10-16T17:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170053Z 16007KT 10SM FEW180 BKN230 21/04 A3005 RMK AO2 SLP182 T02110044","temp":21.1,"dewpoint":4.4,"humidity":33,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T01:53:00.000Z","obsTimeLocal":"2026-10-16T18:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170153Z 16006KT 10SM FEW180 SCT230 21/06 A3004 RMK AO2 SLP178 T02110056","temp":21.1,"dewpoint":5.6,"humidity":36,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T02:53:00.000Z","obsTimeLocal":"2026-10-16T19:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170253Z 16005KT 10SM FEW200 19/06 A3004 RMK AO2 SLP179 T01940061 56006","temp":19.4,"dewpoint":6.1,"humidity":42,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T03:53:00.000Z","obsTimeLocal":"2026-10-16T20:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170353Z 15007KT 10SM FEW200 18/07 A3004 RMK AO2 SLP179 T01780067","temp":17.8,"dewpoint":6.7,"humidity":48,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T04:53:00.000Z","obsTimeLocal":"2026-10-16T21:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170453Z 19006KT 10SM FEW200 SCT250 17/08 A3004 RMK AO2 SLP179 T01720083","temp":17.2,"dewpoint":8.3,"humidity":56,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T05:53:00.000Z","obsTimeLocal":"2026-10-16T22:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170553Z 19009KT 10SM OVC250 16/08 A3004 RMK AO2 SLP177 T01610078 10239 20156 58001","temp":16.1,"dewpoint":7.8,"humidity":58,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T06:53:00.000Z","obsTimeLocal":"2026-10-16T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170653Z 21010KT 10SM OVC250 16/10 A3005 RMK AO2 SLP180 T01560100","temp":15.6,"dewpoint":10,"humidity":69,"wind":5.1,"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/2026-10-16","json":"https://weathermarket.io/api/station/KSEA/2026-10-16","record":"https://weathermarket.io/api/station/KSEA/2026-10-16?format=record","prev":"https://weathermarket.io/station/KSEA/2026-10-15","next":"https://weathermarket.io/station/KSEA/2026-10-17","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=16&year2=2026&month2=10&day2=18&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=16&hora=7&anof=2026&mesf=10&dayf=17&horaf=6&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KSEA"}}}