{"station":{"icao":"KIAD","city":{"slug":"washington","name":"Washington D.C.","country":"United States"},"timezone":"America/New_York","lat":38.91,"lon":-77.04,"us":true,"html":"https://weathermarket.io/station/KIAD","json":"https://weathermarket.io/api/station/KIAD","nwsCli":{"html":"https://weathermarket.io/nws-cli/KIAD","json":"https://weathermarket.io/api/nws-cli/KIAD"}},"date":"2026-10-13","window":{"date":"2026-10-13","timezone":"America/New_York","dayStartUtc":"2026-10-13T04:00:00.000Z","dayEndUtc":"2026-10-14T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":28.3,"tmaxAt":"2026-10-13T18:52:00.000Z","tmin":11.1,"tminAt":"2026-10-13T09:52:00.000Z","tavg":19.9,"humidityMean":74,"windMean":2.6,"windMax":5.7,"windMaxAt":"2026-10-13T17:52:00.000Z","precipObservedCount":0,"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":"2026-10-13T18:52:00.000Z","obsTimeLocal":"2026-10-13T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131852Z 20010KT 10SM FEW250 28/16 A2994 RMK AO2 SLP137 T02830156","temp":28.3,"dewpoint":15.6,"humidity":46,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-13T09:52:00.000Z","obsTimeLocal":"2026-10-13T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130952Z 00000KT 10SM CLR 11/11 A3000 RMK AO2 SLP157 T01110111 $","temp":11.1,"dewpoint":11.1,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-13T17:52:00.000Z","obsTimeLocal":"2026-10-13T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131752Z 19011G16KT 10SM FEW250 28/15 A2996 RMK AO2 SLP144 T02780150 10283 20117 58017","temp":27.8,"dewpoint":15,"humidity":46,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-14T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"29cd346a3583b0ec","lastChangedAt":"2026-10-14T03:55:13.121Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-13?format=record","status":"anchored","sha256":"5ea1c8959aa81abf0adbba870d079bddb7fe57ab3574ec7baca8af0e05d0c72b","revision":"29cd346a3583b0ec","flareTxHash":"0x9155d623099c8139592a9fbaa703a4ffe8751ed402a40a2c5fd275f12e7dbecb","flareBlock":72070941,"anchoredAt":"2026-10-14T07:02:04.564Z","explorer":"https://flare-explorer.flare.network/tx/0x9155d623099c8139592a9fbaa703a4ffe8751ed402a40a2c5fd275f12e7dbecb","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":"2026-10-13T18:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-13T09:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":28.3,"tmin":11.1,"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":28.89,"tmin":11.11,"precip":0,"corrected":false,"issuedAt":"2026-10-14T06:27:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-13","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-13"},"observations":[{"obsTimeUtc":"2026-10-13T04:52:00.000Z","obsTimeLocal":"2026-10-13T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130452Z 00000KT 10SM CLR 14/13 A2998 RMK AO2 SLP150 T01390133 402440139 $","temp":13.9,"dewpoint":13.3,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T05:52:00.000Z","obsTimeLocal":"2026-10-13T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130552Z 00000KT 10SM CLR 13/13 A2997 RMK AO2 SLP146 T01330128 10200 20133 50001 $","temp":13.3,"dewpoint":12.8,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T06:52:00.000Z","obsTimeLocal":"2026-10-13T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130652Z 00000KT 10SM CLR 12/12 A2997 RMK AO2 SLP146 T01220122 $","temp":12.2,"dewpoint":12.2,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T07:52:00.000Z","obsTimeLocal":"2026-10-13T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130752Z 00000KT 7SM CLR 12/12 A2997 RMK AO2 SLP146 T01170117 $","temp":11.7,"dewpoint":11.7,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T08:52:00.000Z","obsTimeLocal":"2026-10-13T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130852Z 00000KT 7SM R01R/5500VP6000FT CLR 12/11 A2998 RMK AO2 SLP149 T01170111 53002 $","temp":11.7,"dewpoint":11.1,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T09:52:00.000Z","obsTimeLocal":"2026-10-13T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130952Z 00000KT 10SM CLR 11/11 A3000 RMK AO2 SLP157 T01110111 $","temp":11.1,"dewpoint":11.1,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T10:52:00.000Z","obsTimeLocal":"2026-10-13T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131052Z 00000KT 10SM FEW250 11/11 A3000 RMK AO2 SLP159 T01110111","temp":11.1,"dewpoint":11.1,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T11:52:00.000Z","obsTimeLocal":"2026-10-13T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131152Z 00000KT 10SM FEW250 12/12 A3002 RMK AO2 SLP163 T01170117 10133 20111 51013","temp":11.7,"dewpoint":11.7,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T12:52:00.000Z","obsTimeLocal":"2026-10-13T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131252Z 21003KT 10SM FEW250 16/14 A3002 RMK AO2 SLP166 T01560144","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T13:52:00.000Z","obsTimeLocal":"2026-10-13T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131352Z VRB05KT 10SM FEW250 20/16 A3002 RMK AO2 SLP165 T02000156","temp":20,"dewpoint":15.6,"humidity":76,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T14:52:00.000Z","obsTimeLocal":"2026-10-13T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131452Z 18008KT 10SM FEW250 23/14 A3001 RMK AO2 SLP161 T02280144 58001","temp":22.8,"dewpoint":14.4,"humidity":59,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T15:52:00.000Z","obsTimeLocal":"2026-10-13T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131552Z 21008KT 10SM FEW250 25/14 A3000 RMK AO2 SLP159 T02500144","temp":25,"dewpoint":14.4,"humidity":52,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T16:52:00.000Z","obsTimeLocal":"2026-10-13T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131652Z 20010KT 10SM CLR 27/15 A2999 RMK AO2 SLP153 T02670150","temp":26.7,"dewpoint":15,"humidity":49,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T17:52:00.000Z","obsTimeLocal":"2026-10-13T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131752Z 19011G16KT 10SM FEW250 28/15 A2996 RMK AO2 SLP144 T02780150 10283 20117 58017","temp":27.8,"dewpoint":15,"humidity":46,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T18:52:00.000Z","obsTimeLocal":"2026-10-13T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131852Z 20010KT 10SM FEW250 28/16 A2994 RMK AO2 SLP137 T02830156","temp":28.3,"dewpoint":15.6,"humidity":46,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T19:52:00.000Z","obsTimeLocal":"2026-10-13T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 131952Z 20011KT 10SM FEW250 28/15 A2992 RMK AO2 SLP131 T02830150","temp":28.3,"dewpoint":15,"humidity":44,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T20:52:00.000Z","obsTimeLocal":"2026-10-13T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 132052Z 20010G17KT 10SM CLR 28/15 A2992 RMK AO2 SLP131 T02780150 56013","temp":27.8,"dewpoint":15,"humidity":46,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T21:52:00.000Z","obsTimeLocal":"2026-10-13T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 132152Z 20008KT 10SM FEW100 26/16 A2993 RMK AO2 SLP132 T02610161","temp":26.1,"dewpoint":16.1,"humidity":54,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T22:52:00.000Z","obsTimeLocal":"2026-10-13T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 132252Z 18007KT 10SM FEW110 24/16 A2992 RMK AO2 SLP130 T02440161","temp":24.4,"dewpoint":16.1,"humidity":60,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T23:52:00.000Z","obsTimeLocal":"2026-10-13T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 132352Z 17006KT 10SM FEW110 23/16 A2993 RMK AO2 SLP134 T02330161 10289 20233 53002","temp":23.3,"dewpoint":16.1,"humidity":64,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-14T00:52:00.000Z","obsTimeLocal":"2026-10-13T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 140052Z 20007KT 10SM FEW110 22/16 A2993 RMK AO2 SLP135 T02220161","temp":22.2,"dewpoint":16.1,"humidity":68,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-14T01:52:00.000Z","obsTimeLocal":"2026-10-13T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 140152Z 18006KT 10SM FEW110 21/17 A2994 RMK AO2 SLP136 T02110167","temp":21.1,"dewpoint":16.7,"humidity":76,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-14T02:52:00.000Z","obsTimeLocal":"2026-10-13T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 140252Z 20007KT 10SM FEW110 22/17 A2994 RMK AO2 SLP135 T02170167 51003","temp":21.7,"dewpoint":16.7,"humidity":73,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-14T03:52:00.000Z","obsTimeLocal":"2026-10-13T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 140352Z 20005KT 10SM CLR 21/17 A2994 RMK AO2 SLP137 T02060172","temp":20.6,"dewpoint":17.2,"humidity":81,"wind":2.6,"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/KIAD/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KIAD/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for KIAD for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KIAD/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/KIAD/2026-10-13","json":"https://weathermarket.io/api/station/KIAD/2026-10-13","record":"https://weathermarket.io/api/station/KIAD/2026-10-13?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-12","next":"https://weathermarket.io/station/KIAD/2026-10-14","station":"https://weathermarket.io/station/KIAD","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=IAD&data=metar&year1=2026&month1=10&day1=13&year2=2026&month2=10&day2=15&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=KIAD&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=13&hora=4&anof=2026&mesf=10&dayf=14&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}