{"station":{"icao":"KSFO","city":{"slug":"san-francisco","name":"San Francisco","country":"United States"},"timezone":"America/Los_Angeles","lat":37.77,"lon":-122.42,"us":true,"html":"https://weathermarket.io/station/KSFO","json":"https://weathermarket.io/api/station/KSFO","nwsCli":{"html":"https://weathermarket.io/nws-cli/KSFO","json":"https://weathermarket.io/api/nws-cli/KSFO"}},"date":"2026-10-18","window":{"date":"2026-10-18","timezone":"America/Los_Angeles","dayStartUtc":"2026-10-18T07:00:00.000Z","dayEndUtc":"2026-10-19T07:00:00.000Z","utcOffsetStart":"-07:00","utcOffsetEnd":"-07:00","hours":24},"complete":true,"values":{"tmax":17.8,"tmaxAt":"2026-10-18T17:56:00.000Z","tmin":14.4,"tminAt":"2026-10-18T10:56:00.000Z","tavg":15.8,"humidityMean":79.3,"windMean":6,"windMax":9.8,"windMaxAt":"2026-10-18T23:56:00.000Z","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":"2026-10-18T17:56:00.000Z","obsTimeLocal":"2026-10-18T10:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181756Z 31012KT 10SM FEW008 18/13 A3002 RMK AO2 SLP165 T01780133 10178 20144 50012","temp":17.8,"dewpoint":13.3,"humidity":75,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-18T10:56:00.000Z","obsTimeLocal":"2026-10-18T03:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181056Z 29007KT 10SM FEW003 14/13 A2997 RMK AO2 SLP147 T01440133 $","temp":14.4,"dewpoint":13.3,"humidity":93,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-18T23:56:00.000Z","obsTimeLocal":"2026-10-18T16:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 182356Z 26019G26KT 10SM FEW007 SCT010 17/12 A2999 RMK AO2 PK WND 29026/2319 SLP154 T01670117 10183 20167 56005 $","temp":16.7,"dewpoint":11.7,"humidity":72,"wind":9.8,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-19T10:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"8f8fa5c8daeebb39","lastChangedAt":"2026-10-19T06:59:38.437Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KSFO/2026-10-18?format=record","status":"anchored","sha256":"dd93c278064d5ca2c770fc09b5a8f949641c54c916a15b3058ad078f636f0f21","revision":"8f8fa5c8daeebb39","flareTxHash":"0x4ae62783c94956b0a8fb8ac3868e725c4ba0ad761453422d265885bc1dab8567","flareBlock":72471451,"anchoredAt":"2026-10-19T10:02:01.146Z","explorer":"https://flare-explorer.flare.network/tx/0x4ae62783c94956b0a8fb8ac3868e725c4ba0ad761453422d265885bc1dab8567","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":25,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-18T17:56:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-18T10:56:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":17.8,"tmin":14.4,"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":18.33,"tmin":14.44,"precip":0,"corrected":false,"issuedAt":"2026-10-19T08:36:00.000Z","html":"https://weathermarket.io/nws-cli/KSFO/2026-10-18","json":"https://weathermarket.io/api/nws-cli/KSFO/2026-10-18"},"observations":[{"obsTimeUtc":"2026-10-18T07:56:00.000Z","obsTimeLocal":"2026-10-18T00:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 180756Z 30010KT 10SM CLR 16/13 A2998 RMK AO2 SLP150 T01610128 402830156 CHINO RWY L10 VISNO $","temp":16.1,"dewpoint":12.8,"humidity":81,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T08:56:00.000Z","obsTimeLocal":"2026-10-18T01:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 180856Z 29007KT 10SM CLR 16/13 A2997 RMK AO2 SLP148 T01560128 58003 $","temp":15.6,"dewpoint":12.8,"humidity":83,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T09:56:00.000Z","obsTimeLocal":"2026-10-18T02:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 180956Z 30008KT 10SM FEW004 16/13 A2997 RMK AO2 SLP148 T01560133 $","temp":15.6,"dewpoint":13.3,"humidity":86,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T10:56:00.000Z","obsTimeLocal":"2026-10-18T03:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181056Z 29007KT 10SM FEW003 14/13 A2997 RMK AO2 SLP147 T01440133 $","temp":14.4,"dewpoint":13.3,"humidity":93,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T11:56:00.000Z","obsTimeLocal":"2026-10-18T04:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181156Z 30010KT 10SM FEW003 14/13 A2996 RMK AO2 SLP146 T01440133 10167 20144 58002 $","temp":14.4,"dewpoint":13.3,"humidity":93,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T12:56:00.000Z","obsTimeLocal":"2026-10-18T05:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181256Z 30008KT 10SM FEW003 14/13 A2997 RMK AO2 SLP148 T01440128 $","temp":14.4,"dewpoint":12.8,"humidity":90,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T13:56:00.000Z","obsTimeLocal":"2026-10-18T06:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181356Z 29010KT 10SM FEW006 14/13 A2997 RMK AO2 SLP150 T01440128 $","temp":14.4,"dewpoint":12.8,"humidity":90,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T14:56:00.000Z","obsTimeLocal":"2026-10-18T07:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181456Z 28007KT 10SM FEW006 14/13 A2999 RMK AO2 SLP154 T01440128 53007 $","temp":14.4,"dewpoint":12.8,"humidity":90,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T15:56:00.000Z","obsTimeLocal":"2026-10-18T08:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181556Z 31008KT 10SM FEW006 16/13 A3001 RMK AO2 SLP162 T01560133","temp":15.6,"dewpoint":13.3,"humidity":86,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T16:56:00.000Z","obsTimeLocal":"2026-10-18T09:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181656Z 31010KT 10SM FEW008 17/13 A3002 RMK AO2 SLP166 T01720133","temp":17.2,"dewpoint":13.3,"humidity":78,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T17:56:00.000Z","obsTimeLocal":"2026-10-18T10:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181756Z 31012KT 10SM FEW008 18/13 A3002 RMK AO2 SLP165 T01780133 10178 20144 50012","temp":17.8,"dewpoint":13.3,"humidity":75,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T18:56:00.000Z","obsTimeLocal":"2026-10-18T11:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181856Z 31015KT 10SM FEW008 18/13 A3002 RMK AO2 SLP167 T01780128","temp":17.8,"dewpoint":12.8,"humidity":73,"wind":7.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T19:56:00.000Z","obsTimeLocal":"2026-10-18T12:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 181956Z 30016G23KT 10SM FEW008 FEW013 18/13 A3002 RMK AO2 SLP164 T01780128 VISNO $","temp":17.8,"dewpoint":12.8,"humidity":73,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T20:56:00.000Z","obsTimeLocal":"2026-10-18T13:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 182056Z 30018G25KT 10SM FEW008 FEW014 18/12 A3000 RMK AO2 PK WND 30026/2023 SLP159 T01780122 58006 VISNO $","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":9.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T21:56:00.000Z","obsTimeLocal":"2026-10-18T14:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 182156Z 28015KT 10SM FEW004 18/12 A2999 RMK AO2 PK WND 29026/2109 SLP155 T01780122 $","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":7.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T22:56:00.000Z","obsTimeLocal":"2026-10-18T15:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 182256Z 28016KT 10SM FEW005 SCT200 17/12 A2999 RMK AO2 PK WND 28028/2241 SLP155 T01720117 $","temp":17.2,"dewpoint":11.7,"humidity":70,"wind":8.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-18T23:56:00.000Z","obsTimeLocal":"2026-10-18T16:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 182356Z 26019G26KT 10SM FEW007 SCT010 17/12 A2999 RMK AO2 PK WND 29026/2319 SLP154 T01670117 10183 20167 56005 $","temp":16.7,"dewpoint":11.7,"humidity":72,"wind":9.8,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T00:05:00.000Z","obsTimeLocal":"2026-10-18T17:05:00-07:00","metarType":"SPECI","raw":"SPECI KSFO 190005Z 28018G26KT 10SM FEW007 BKN011 16/12 A2999 RMK AO2 PK WND 27026/0000 T01610117 $","temp":16.1,"dewpoint":11.7,"humidity":75,"wind":9.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T00:56:00.000Z","obsTimeLocal":"2026-10-18T17:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190056Z 27018G23KT 10SM FEW009 BKN012 16/11 A2998 RMK AO2 PK WND 27026/0000 SLP152 T01560111 $","temp":15.6,"dewpoint":11.1,"humidity":75,"wind":9.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T01:56:00.000Z","obsTimeLocal":"2026-10-18T18:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190156Z 26011KT 10SM BKN011 15/11 A2999 RMK AO2 SLP154 T01500111 $","temp":15,"dewpoint":11.1,"humidity":78,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T02:56:00.000Z","obsTimeLocal":"2026-10-18T19:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190256Z 28012KT 10SM SCT012 BKN016 15/11 A3000 RMK AO2 SLP159 T01500111 53005 $","temp":15,"dewpoint":11.1,"humidity":78,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T03:56:00.000Z","obsTimeLocal":"2026-10-18T20:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190356Z 28011G18KT 10SM FEW008 BKN017 15/11 A3001 RMK AO2 SLP162 T01500111 $","temp":15,"dewpoint":11.1,"humidity":78,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T04:56:00.000Z","obsTimeLocal":"2026-10-18T21:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190456Z 27011KT 10SM FEW008 OVC016 15/11 A3002 RMK AO2 SLP164 T01500106 $","temp":15,"dewpoint":10.6,"humidity":75,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T05:56:00.000Z","obsTimeLocal":"2026-10-18T22:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190556Z 25008KT 10SM FEW008 OVC019 15/10 A3002 RMK AO2 SLP167 T01500100 10167 20150 51008 $","temp":15,"dewpoint":10,"humidity":72,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-19T06:56:00.000Z","obsTimeLocal":"2026-10-18T23:56:00-07:00","metarType":"METAR","raw":"METAR KSFO 190656Z 29008KT 10SM FEW008 OVC017 14/11 A3001 RMK AO2 SLP162 T01440106 $","temp":14.4,"dewpoint":10.6,"humidity":78,"wind":4.1,"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/KSFO/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KSFO/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for KSFO for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KSFO/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/KSFO/2026-10-18","json":"https://weathermarket.io/api/station/KSFO/2026-10-18","record":"https://weathermarket.io/api/station/KSFO/2026-10-18?format=record","prev":"https://weathermarket.io/station/KSFO/2026-10-17","next":"https://weathermarket.io/station/KSFO/2026-10-19","station":"https://weathermarket.io/station/KSFO","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=SFO&data=metar&year1=2026&month1=10&day1=18&year2=2026&month2=10&day2=20&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=KSFO&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=18&hora=7&anof=2026&mesf=10&dayf=19&horaf=6&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KSFO"}}}