{"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":"2026-10-08","window":{"date":"2026-10-08","timezone":"America/New_York","dayStartUtc":"2026-10-08T04:00:00.000Z","dayEndUtc":"2026-10-09T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":26.1,"tmaxAt":"2026-10-08T19:52:00.000Z","tmin":12.2,"tminAt":"2026-10-08T10:52:00.000Z","tavg":18.7,"humidityMean":58.5,"windMean":3,"windMax":6.7,"windMaxAt":"2026-10-08T13:52:00.000Z","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":"2026-10-08T19:52:00.000Z","obsTimeLocal":"2026-10-08T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081952Z 26009KT 10SM FEW065 26/07 A2994 RMK AO2 SLP136 T02610067","temp":26.1,"dewpoint":6.7,"humidity":29,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-08T10:52:00.000Z","obsTimeLocal":"2026-10-08T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081052Z 00000KT 10SM CLR 12/11 A2989 RMK AO2 SLP120 T01220111","temp":12.2,"dewpoint":11.1,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-08T13:52:00.000Z","obsTimeLocal":"2026-10-08T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081352Z 29013KT 10SM FEW050 21/12 A2996 RMK AO2 SLP143 T02110122","temp":21.1,"dewpoint":12.2,"humidity":57,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-09T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"d13210275db5030e","lastChangedAt":"2026-10-09T03:54:39.829Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-08?format=record","status":"anchored","sha256":"a7b4865c13e3f42ed9be536063df444c059057fd16b523b0ad77a2eecf65e83b","revision":"d13210275db5030e","flareTxHash":"0xeeafa118c3049288c255f0920d91c70e8b7ab876140bbac96d13ee9bd71d5418","flareBlock":71679052,"anchoredAt":"2026-10-09T07:01:26.071Z","explorer":"https://flare-explorer.flare.network/tx/0xeeafa118c3049288c255f0920d91c70e8b7ab876140bbac96d13ee9bd71d5418","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":"2026-10-08T19:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-08T10:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":26.1,"tmin":12.2,"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":26.11,"tmin":10.56,"precip":0,"corrected":false,"issuedAt":"2026-10-09T06:20:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-08","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-08"},"observations":[{"obsTimeUtc":"2026-10-08T04:52:00.000Z","obsTimeLocal":"2026-10-08T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080452Z 20006KT 10SM CLR 15/12 A2988 RMK AO2 SLP118 T01500122 402280056","temp":15,"dewpoint":12.2,"humidity":83,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T05:52:00.000Z","obsTimeLocal":"2026-10-08T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080552Z 19008KT 10SM CLR 15/12 A2987 RMK AO2 SLP112 T01500122 10178 20139 58012 $","temp":15,"dewpoint":12.2,"humidity":83,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T06:52:00.000Z","obsTimeLocal":"2026-10-08T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080652Z 18005KT 10SM CLR 14/12 A2986 RMK AO2 SLP111 T01440122 $","temp":14.4,"dewpoint":12.2,"humidity":87,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T07:52:00.000Z","obsTimeLocal":"2026-10-08T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080752Z 17005KT 10SM CLR 14/12 A2986 RMK AO2 SLP108 T01440122 $","temp":14.4,"dewpoint":12.2,"humidity":87,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T08:52:00.000Z","obsTimeLocal":"2026-10-08T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080852Z 18006KT 10SM CLR 14/12 A2985 RMK AO2 SLP106 T01390122 56006 $","temp":13.9,"dewpoint":12.2,"humidity":89,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T09:52:00.000Z","obsTimeLocal":"2026-10-08T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080952Z 18003KT 10SM CLR 13/12 A2986 RMK AO2 SLP111 T01330122 $","temp":13.3,"dewpoint":12.2,"humidity":93,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T10:52:00.000Z","obsTimeLocal":"2026-10-08T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081052Z 00000KT 10SM CLR 12/11 A2989 RMK AO2 SLP120 T01220111","temp":12.2,"dewpoint":11.1,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T11:52:00.000Z","obsTimeLocal":"2026-10-08T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081152Z 00000KT 10SM CLR 12/11 A2992 RMK AO2 SLP129 T01220111 10150 20111 53022","temp":12.2,"dewpoint":11.1,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T12:52:00.000Z","obsTimeLocal":"2026-10-08T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081252Z 00000KT 10SM FEW050 17/13 A2994 RMK AO2 SLP137 T01720133","temp":17.2,"dewpoint":13.3,"humidity":78,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T13:52:00.000Z","obsTimeLocal":"2026-10-08T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081352Z 29013KT 10SM FEW050 21/12 A2996 RMK AO2 SLP143 T02110122","temp":21.1,"dewpoint":12.2,"humidity":57,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T14:52:00.000Z","obsTimeLocal":"2026-10-08T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081452Z 29010KT 10SM FEW070 23/10 A2997 RMK AO2 SLP148 T02280100 51019","temp":22.8,"dewpoint":10,"humidity":44,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T15:52:00.000Z","obsTimeLocal":"2026-10-08T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081552Z 29010KT 10SM FEW060 24/07 A2998 RMK AO2 SLP150 T02390067","temp":23.9,"dewpoint":6.7,"humidity":33,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T16:52:00.000Z","obsTimeLocal":"2026-10-08T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081652Z 29009G15KT 10SM FEW060 24/07 A2997 RMK AO2 SLP147 T02440067","temp":24.4,"dewpoint":6.7,"humidity":32,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T17:52:00.000Z","obsTimeLocal":"2026-10-08T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081752Z 28010G19KT 10SM FEW065 26/07 A2996 RMK AO2 SLP142 T02560067 10256 20122 58006","temp":25.6,"dewpoint":6.7,"humidity":30,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T18:52:00.000Z","obsTimeLocal":"2026-10-08T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081852Z 29012G19KT 10SM FEW065 26/06 A2994 RMK AO2 SLP136 T02560061","temp":25.6,"dewpoint":6.1,"humidity":29,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T19:52:00.000Z","obsTimeLocal":"2026-10-08T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 081952Z 26009KT 10SM FEW065 26/07 A2994 RMK AO2 SLP136 T02610067","temp":26.1,"dewpoint":6.7,"humidity":29,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T20:52:00.000Z","obsTimeLocal":"2026-10-08T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 082052Z 29011G18KT 10SM FEW070 26/05 A2995 RMK AO2 SLP138 T02560050 55003","temp":25.6,"dewpoint":5,"humidity":27,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T21:52:00.000Z","obsTimeLocal":"2026-10-08T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 082152Z 28006KT 10SM FEW070 24/05 A2996 RMK AO2 SLP144 T02440050","temp":24.4,"dewpoint":5,"humidity":29,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T22:52:00.000Z","obsTimeLocal":"2026-10-08T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 082252Z 29008KT 10SM FEW250 23/04 A2998 RMK AO2 SLP151 T02330039","temp":23.3,"dewpoint":3.9,"humidity":28,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T23:52:00.000Z","obsTimeLocal":"2026-10-08T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 082352Z 31004KT 10SM FEW250 21/05 A3002 RMK AO2 SLP163 T02060050 10261 20206 53024","temp":20.6,"dewpoint":5,"humidity":36,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-09T00:52:00.000Z","obsTimeLocal":"2026-10-08T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 090052Z 29004KT 10SM FEW250 17/06 A3005 RMK AO2 SLP174 T01720061","temp":17.2,"dewpoint":6.1,"humidity":48,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-09T01:52:00.000Z","obsTimeLocal":"2026-10-08T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 090152Z 30003KT 10SM FEW250 15/07 A3007 RMK AO2 SLP180 T01500067","temp":15,"dewpoint":6.7,"humidity":58,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-09T02:52:00.000Z","obsTimeLocal":"2026-10-08T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 090252Z 00000KT 10SM FEW250 13/08 A3009 RMK AO2 SLP188 T01330078 51026","temp":13.3,"dewpoint":7.8,"humidity":69,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-09T03:52:00.000Z","obsTimeLocal":"2026-10-08T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 090352Z 00000KT 10SM FEW250 13/07 A3010 RMK AO2 SLP191 T01280072","temp":12.8,"dewpoint":7.2,"humidity":69,"wind":0,"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/2026-10-08","json":"https://weathermarket.io/api/station/KIAD/2026-10-08","record":"https://weathermarket.io/api/station/KIAD/2026-10-08?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-07","next":"https://weathermarket.io/station/KIAD/2026-10-09","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=8&year2=2026&month2=10&day2=10&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=8&hora=4&anof=2026&mesf=10&dayf=9&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}