{"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":"2026-10-17","window":{"date":"2026-10-17","timezone":"America/Los_Angeles","dayStartUtc":"2026-10-17T07:00:00.000Z","dayEndUtc":"2026-10-18T07:00:00.000Z","utcOffsetStart":"-07:00","utcOffsetEnd":"-07:00","hours":24},"complete":true,"values":{"tmax":16.7,"tmaxAt":"2026-10-17T21:53:00.000Z","tmin":10,"tminAt":"2026-10-18T06:53:00.000Z","tavg":13.8,"humidityMean":75.4,"windMean":5,"windMax":8.2,"windMaxAt":"2026-10-18T03:53:00.000Z","precipObservedCount":3,"nObservations":30,"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":"2026-10-17T21:53:00.000Z","obsTimeLocal":"2026-10-17T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 172153Z 04010KT 10SM FEW030 SCT040 BKN250 17/08 A3023 RMK AO2 SLP244 T01670078","temp":16.7,"dewpoint":7.8,"humidity":56,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-18T06:53:00.000Z","obsTimeLocal":"2026-10-17T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180653Z 03004KT 10SM CLR 10/06 A3025 RMK AO2 SLP248 T01000061","temp":10,"dewpoint":6.1,"humidity":77,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-18T03:53:00.000Z","obsTimeLocal":"2026-10-17T20:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180353Z 04016KT 10SM FEW040 FEW090 12/05 A3024 RMK AO2 SLP248 T01220050","temp":12.2,"dewpoint":5,"humidity":61,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-18T10:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"51192b716673e955","lastChangedAt":"2026-10-18T06:56:39.150Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KSEA/2026-10-17?format=record","status":"anchored","sha256":"32adf04fe49ef73b5c8ce0522ff85f22946362dcd0c25211dea2b00861c626db","revision":"51192b716673e955","flareTxHash":"0x79f4317cdb21697be032b6b8f7bab865e3aaf612ff064d0548f468a2db4fde16","flareBlock":72395202,"anchoredAt":"2026-10-18T10:01:52.263Z","explorer":"https://flare-explorer.flare.network/tx/0x79f4317cdb21697be032b6b8f7bab865e3aaf612ff064d0548f468a2db4fde16","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":30,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-17T21:53:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-18T06:53:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":16.7,"tmin":10,"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":9.44,"precip":0.51,"corrected":false,"issuedAt":"2026-10-18T08:26:00.000Z","html":"https://weathermarket.io/nws-cli/KSEA/2026-10-17","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-10-17"},"observations":[{"obsTimeUtc":"2026-10-17T07:53:00.000Z","obsTimeLocal":"2026-10-17T00:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170753Z 17009KT 10SM SCT120 OVC250 15/08 A3005 RMK AO2 SLP181 T01500083 402500078","temp":15,"dewpoint":8.3,"humidity":64,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T08:53:00.000Z","obsTimeLocal":"2026-10-17T01:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170853Z 17008KT 10SM BKN120 OVC150 15/09 A3006 RMK AO2 SLP185 T01500094 53008","temp":15,"dewpoint":9.4,"humidity":69,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T09:53:00.000Z","obsTimeLocal":"2026-10-17T02:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 170953Z 18009KT 10SM SCT036 BKN065 OVC080 15/11 A3006 RMK AO2 SLP184 T01500106","temp":15,"dewpoint":10.6,"humidity":75,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T10:10:00.000Z","obsTimeLocal":"2026-10-17T03:10:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 171010Z 20010KT 7SM -RA BKN024 BKN035 OVC070 15/11 A3006 RMK AO2 RAB08 P0000 T01500106","temp":15,"dewpoint":10.6,"humidity":75,"wind":5.1,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T10:43:00.000Z","obsTimeLocal":"2026-10-17T03:43:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 171043Z 20011KT 5SM BR SCT006 BKN012 OVC019 13/12 A3007 RMK AO2 RAB08E41 SCT V BKN P0001 T01330122","temp":13.3,"dewpoint":12.2,"humidity":93,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T10:53:00.000Z","obsTimeLocal":"2026-10-17T03:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171053Z 19014G21KT 6SM -RA BR SCT006 BKN011 OVC017 13/12 A3006 RMK AO2 RAB08E41B50 SLP185 SCT V BKN P0001 T01330122","temp":13.3,"dewpoint":12.2,"humidity":93,"wind":7.2,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T11:11:00.000Z","obsTimeLocal":"2026-10-17T04:11:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 171111Z 19013G22KT 10SM BKN006 BKN011 OVC017 13/12 A3007 RMK AO2 RAE06 BKN006 V SCT P0001 T01330122","temp":13.3,"dewpoint":12.2,"humidity":93,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T11:53:00.000Z","obsTimeLocal":"2026-10-17T04:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171153Z 18012KT 10SM BKN006 BKN013 OVC055 13/12 A3008 RMK AO2 RAE06 SLP189 P0001 60002 70002 T01330122 10167 20128 53004","temp":13.3,"dewpoint":12.2,"humidity":93,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T12:20:00.000Z","obsTimeLocal":"2026-10-17T05:20:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 171220Z 21011G24KT 10SM SCT008 SCT013 OVC055 13/12 A3009 RMK AO2 PRESRR T01330117","temp":13.3,"dewpoint":11.7,"humidity":90,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T12:40:00.000Z","obsTimeLocal":"2026-10-17T05:40:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 171240Z 19006G16KT 10SM FEW008 BKN015 OVC055 14/12 A3011 RMK AO2 CIG 012V018 T01390117","temp":13.9,"dewpoint":11.7,"humidity":87,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T12:53:00.000Z","obsTimeLocal":"2026-10-17T05:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171253Z 22008KT 10SM FEW008 BKN015 OVC055 14/11 A3012 RMK AO2 SLP202 CIG 012V018 T01390111","temp":13.9,"dewpoint":11.1,"humidity":83,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T13:53:00.000Z","obsTimeLocal":"2026-10-17T06:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171353Z 20009KT 10SM BKN015 OVC021 13/11 A3014 RMK AO2 SLP212 T01330111","temp":13.3,"dewpoint":11.1,"humidity":87,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T14:53:00.000Z","obsTimeLocal":"2026-10-17T07:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171453Z 21010KT 10SM OVC014 13/11 A3016 RMK AO2 SLP219 T01330111 51028","temp":13.3,"dewpoint":11.1,"humidity":87,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T15:53:00.000Z","obsTimeLocal":"2026-10-17T08:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171553Z 20010KT 10SM OVC016 13/11 A3019 RMK AO2 SLP227 T01330111","temp":13.3,"dewpoint":11.1,"humidity":87,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T16:53:00.000Z","obsTimeLocal":"2026-10-17T09:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171653Z 21007KT 10SM SCT019 OVC028 14/11 A3022 RMK AO2 SLP238 T01440111","temp":14.4,"dewpoint":11.1,"humidity":81,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T17:53:00.000Z","obsTimeLocal":"2026-10-17T10:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171753Z 05008KT 4SM -RA OVC017 13/11 A3024 RMK AO2 RAB43 SLP246 P0000 60000 T01330106 10144 20133 51026","temp":13.3,"dewpoint":10.6,"humidity":84,"wind":4.1,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T18:53:00.000Z","obsTimeLocal":"2026-10-17T11:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171853Z 11006KT 10SM OVC025 13/11 A3024 RMK AO2 RAE20 SLP247 P0000 T01330106","temp":13.3,"dewpoint":10.6,"humidity":84,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T19:53:00.000Z","obsTimeLocal":"2026-10-17T12:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 171953Z 04011KT 10SM BKN025 OVC036 15/10 A3025 RMK AO2 SLP248 T01500100","temp":15,"dewpoint":10,"humidity":72,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T20:00:00.000Z","obsTimeLocal":"2026-10-17T13:00:00-07:00","metarType":"SPECI","raw":"SPECI KSEA 172000Z 05009KT 10SM SCT025 BKN037 OVC044 15/09 A3024 RMK AO2 T01500094","temp":15,"dewpoint":9.4,"humidity":69,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T20:53:00.000Z","obsTimeLocal":"2026-10-17T13:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 172053Z 06008KT 10SM SCT030 BKN045 16/09 A3025 RMK AO2 SLP248 60000 T01560089 51002","temp":15.6,"dewpoint":8.9,"humidity":64,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T21:53:00.000Z","obsTimeLocal":"2026-10-17T14:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 172153Z 04010KT 10SM FEW030 SCT040 BKN250 17/08 A3023 RMK AO2 SLP244 T01670078","temp":16.7,"dewpoint":7.8,"humidity":56,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T22:53:00.000Z","obsTimeLocal":"2026-10-17T15:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 172253Z 02009KT 10SM FEW040 BKN085 BKN250 16/08 A3023 RMK AO2 SLP241 T01610083","temp":16.1,"dewpoint":8.3,"humidity":60,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-17T23:53:00.000Z","obsTimeLocal":"2026-10-17T16:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 172353Z 03009KT 10SM FEW040 SCT085 BKN250 16/07 A3023 RMK AO2 SLP241 60000 T01560072 10167 20122 55006","temp":15.6,"dewpoint":7.2,"humidity":57,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T00:53:00.000Z","obsTimeLocal":"2026-10-17T17:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180053Z 05011KT 10SM SCT085 BKN250 14/06 A3023 RMK AO2 SLP242 T01440061","temp":14.4,"dewpoint":6.1,"humidity":57,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T01:53:00.000Z","obsTimeLocal":"2026-10-17T18:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180153Z 05012KT 10SM SCT085 BKN250 13/06 A3023 RMK AO2 SLP245 T01330056","temp":13.3,"dewpoint":5.6,"humidity":60,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T02:53:00.000Z","obsTimeLocal":"2026-10-17T19:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180253Z 04011KT 10SM FEW090 SCT250 12/06 A3024 RMK AO2 SLP247 T01220056 53005","temp":12.2,"dewpoint":5.6,"humidity":64,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T03:53:00.000Z","obsTimeLocal":"2026-10-17T20:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180353Z 04016KT 10SM FEW040 FEW090 12/05 A3024 RMK AO2 SLP248 T01220050","temp":12.2,"dewpoint":5,"humidity":61,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T04:53:00.000Z","obsTimeLocal":"2026-10-17T21:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180453Z 03011KT 10SM FEW090 11/06 A3025 RMK AO2 SLP249 T01110056","temp":11.1,"dewpoint":5.6,"humidity":69,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T05:53:00.000Z","obsTimeLocal":"2026-10-17T22:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180553Z 03010KT 10SM CLR 11/06 A3025 RMK AO2 SLP248 T01110061 10156 20111 50001","temp":11.1,"dewpoint":6.1,"humidity":71,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T06:53:00.000Z","obsTimeLocal":"2026-10-17T23:53:00-07:00","metarType":"METAR","raw":"METAR KSEA 180653Z 03004KT 10SM CLR 10/06 A3025 RMK AO2 SLP248 T01000061","temp":10,"dewpoint":6.1,"humidity":77,"wind":2.1,"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/2026-10-17","json":"https://weathermarket.io/api/station/KSEA/2026-10-17","record":"https://weathermarket.io/api/station/KSEA/2026-10-17?format=record","prev":"https://weathermarket.io/station/KSEA/2026-10-16","next":"https://weathermarket.io/station/KSEA/2026-10-18","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=17&year2=2026&month2=10&day2=19&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=17&hora=7&anof=2026&mesf=10&dayf=18&horaf=6&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KSEA"}}}