{"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":"2026-09-28","window":{"date":"2026-09-28","timezone":"America/Los_Angeles","dayStartUtc":"2026-09-28T07:00:00.000Z","dayEndUtc":"2026-09-29T07:00:00.000Z","utcOffsetStart":"-07:00","utcOffsetEnd":"-07:00","hours":24},"complete":true,"values":{"tmax":17.8,"tmaxAt":"2026-09-28T21:53:00.000Z","tmin":7.8,"tminAt":"2026-09-28T12:53:00.000Z","tavg":13.2,"humidityMean":74.3,"windMean":3.4,"windMax":7.2,"windMaxAt":"2026-09-29T05:53:00.000Z","precipObservedCount":1,"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":"2026-09-28T21:53:00.000Z","obsTimeLocal":"2026-09-28T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 282153Z 19009KT 10SM BKN130 18/08 A3003 RMK AO2 SLP176 T01780078 $","temp":17.8,"dewpoint":7.8,"humidity":52,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-09-28T12:53:00.000Z","obsTimeLocal":"2026-09-28T05:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281253Z 14004KT 10SM SCT220 SCT250 08/07 A3005 RMK AO2 SLP181 T00780067 $","temp":7.8,"dewpoint":6.7,"humidity":93,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-09-29T05:53:00.000Z","obsTimeLocal":"2026-09-28T22:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290553Z 21014KT 10SM BKN065 BKN075 OVC090 15/10 A2998 RMK AO2 SLP157 VIRGA T01500100 10172 20150 58002 $","temp":15,"dewpoint":10,"humidity":72,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-09-29T10:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"72fafd45589abff7","lastChangedAt":"2026-09-29T06:57:38.710Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KSEA/2026-09-28?format=record","status":"anchored","sha256":"dd397d46b65fb399828c81003c1fc878e35e706ec907c0bd5887cef6ecc413cd","revision":"72fafd45589abff7","flareTxHash":"0x249d9e706f59c57e359ac56df8428e8defd3e8c7033908cc096c8a56852b0c82","flareBlock":71105491,"anchoredAt":"2026-10-02T01:01:27.187Z","explorer":"https://flare-explorer.flare.network/tx/0x249d9e706f59c57e359ac56df8428e8defd3e8c7033908cc096c8a56852b0c82","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":"2026-09-28T21:53:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-09-28T12:53:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":17.8,"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":17.78,"tmin":7.78,"precip":0,"corrected":false,"issuedAt":"2026-09-29T08:31:00.000Z","html":"https://weathermarket.io/nws-cli/KSEA/2026-09-28","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-09-28"},"observations":[{"obsTimeUtc":"2026-09-28T07:53:00.000Z","obsTimeLocal":"2026-09-28T00:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 280753Z 02006KT 10SM FEW170 09/07 A3005 RMK AO2 SLP181 T00890072 401830089 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T08:53:00.000Z","obsTimeLocal":"2026-09-28T01:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 280853Z 00000KT 10SM BKN250 09/07 A3005 RMK AO2 SLP183 T00940072 53006 $","temp":9.4,"dewpoint":7.2,"humidity":86,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T09:53:00.000Z","obsTimeLocal":"2026-09-28T02:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 280953Z 17003KT 10SM BKN250 09/08 A3006 RMK AO2 SLP186 T00940083 $","temp":9.4,"dewpoint":8.3,"humidity":93,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T10:53:00.000Z","obsTimeLocal":"2026-09-28T03:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281053Z 13005KT 10SM BKN250 09/07 A3006 RMK AO2 SLP184 T00890072 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T11:53:00.000Z","obsTimeLocal":"2026-09-28T04:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281153Z 12003KT 10SM FEW220 SCT250 09/07 A3004 RMK AO2 SLP180 T00890072 10139 20083 58003 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T12:53:00.000Z","obsTimeLocal":"2026-09-28T05:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281253Z 14004KT 10SM SCT220 SCT250 08/07 A3005 RMK AO2 SLP181 T00780067 $","temp":7.8,"dewpoint":6.7,"humidity":93,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T13:53:00.000Z","obsTimeLocal":"2026-09-28T06:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281353Z 13006KT 10SM FEW010 BKN170 BKN230 09/07 A3005 RMK AO2 SLP183 T00890072 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T14:53:00.000Z","obsTimeLocal":"2026-09-28T07:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281453Z 21003KT 10SM FEW010 BKN150 BKN230 09/07 A3007 RMK AO2 SLP190 T00890067 53010 $","temp":8.9,"dewpoint":6.7,"humidity":86,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T15:53:00.000Z","obsTimeLocal":"2026-09-28T08:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281553Z 19004KT 10SM FEW010 SCT150 SCT250 10/08 A3008 RMK AO2 SLP192 T01000083 $","temp":10,"dewpoint":8.3,"humidity":89,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T16:53:00.000Z","obsTimeLocal":"2026-09-28T09:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281653Z 18005KT 10SM FEW010 SCT150 SCT220 12/08 A3008 RMK AO2 SLP193 T01170083 $","temp":11.7,"dewpoint":8.3,"humidity":80,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T17:53:00.000Z","obsTimeLocal":"2026-09-28T10:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281753Z VRB04KT 10SM FEW020 FEW150 SCT220 14/09 A3008 RMK AO2 SLP192 T01390089 10139 20078 50002 $","temp":13.9,"dewpoint":8.9,"humidity":72,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T18:53:00.000Z","obsTimeLocal":"2026-09-28T11:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281853Z 00000KT 10SM SCT180 SCT220 16/09 A3007 RMK AO2 SLP190 T01560089 $","temp":15.6,"dewpoint":8.9,"humidity":64,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T19:53:00.000Z","obsTimeLocal":"2026-09-28T12:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 281953Z 20006KT 10SM BKN160 BKN220 17/09 A3006 RMK AO2 SLP184 T01670089 $","temp":16.7,"dewpoint":8.9,"humidity":60,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T20:53:00.000Z","obsTimeLocal":"2026-09-28T13:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 282053Z 20006KT 10SM BKN140 17/08 A3005 RMK AO2 SLP182 T01670078 58010 $","temp":16.7,"dewpoint":7.8,"humidity":56,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T21:53:00.000Z","obsTimeLocal":"2026-09-28T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 282153Z 19009KT 10SM BKN130 18/08 A3003 RMK AO2 SLP176 T01780078 $","temp":17.8,"dewpoint":7.8,"humidity":52,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T22:53:00.000Z","obsTimeLocal":"2026-09-28T15:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 282253Z 21010KT 10SM BKN110 17/07 A3001 RMK AO2 SLP170 ACSL DSNT SE T01720072 $","temp":17.2,"dewpoint":7.2,"humidity":52,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-28T23:53:00.000Z","obsTimeLocal":"2026-09-28T16:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 282353Z 21010KT 10SM BKN110 17/08 A3001 RMK AO2 SLP168 ACSL DSNT SE T01720078 10178 20139 56014 $","temp":17.2,"dewpoint":7.8,"humidity":54,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T00:53:00.000Z","obsTimeLocal":"2026-09-28T17:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290053Z 21010KT 10SM BKN100 BKN230 17/09 A2999 RMK AO2 SLP161 T01720089 $","temp":17.2,"dewpoint":8.9,"humidity":58,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T01:53:00.000Z","obsTimeLocal":"2026-09-28T18:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290153Z 21011KT 10SM FEW070 BKN100 BKN230 16/10 A2998 RMK AO2 SLP157 T01610100 $","temp":16.1,"dewpoint":10,"humidity":67,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T02:53:00.000Z","obsTimeLocal":"2026-09-28T19:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290253Z 22008KT 10SM FEW065 BKN110 BKN230 16/10 A2998 RMK AO2 SLP160 T01560100 55008 $","temp":15.6,"dewpoint":10,"humidity":69,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T03:53:00.000Z","obsTimeLocal":"2026-09-28T20:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290353Z 21008KT 10SM FEW060 OVC090 15/09 A3000 RMK AO2 SLP165 T01500094 $","temp":15,"dewpoint":9.4,"humidity":69,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T04:53:00.000Z","obsTimeLocal":"2026-09-28T21:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290453Z 20010KT 10SM FEW060 OVC100 15/10 A2998 RMK AO2 SLP160 T01500100 $","temp":15,"dewpoint":10,"humidity":72,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T05:53:00.000Z","obsTimeLocal":"2026-09-28T22:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290553Z 21014KT 10SM BKN065 BKN075 OVC090 15/10 A2998 RMK AO2 SLP157 VIRGA T01500100 10172 20150 58002 $","temp":15,"dewpoint":10,"humidity":72,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-09-29T06:53:00.000Z","obsTimeLocal":"2026-09-28T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 290653Z 22013KT 10SM -RA FEW035 BKN050 OVC085 14/11 A2998 RMK AO2 RAB37 SLP159 P0000 T01390111 $","temp":13.9,"dewpoint":11.1,"humidity":83,"wind":6.7,"precipObserved":true,"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/2026-09-28","json":"https://weathermarket.io/api/station/KSEA/2026-09-28","record":"https://weathermarket.io/api/station/KSEA/2026-09-28?format=record","prev":"https://weathermarket.io/station/KSEA/2026-09-27","next":"https://weathermarket.io/station/KSEA/2026-09-29","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=9&day1=28&year2=2026&month2=9&day2=30&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=9&day=28&hora=7&anof=2026&mesf=9&dayf=29&horaf=6&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KSEA"}}}