{"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":"2026-10-25","window":{"date":"2026-10-25","timezone":"America/New_York","dayStartUtc":"2026-10-25T04:00:00.000Z","dayEndUtc":"2026-10-26T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":18.3,"tmaxAt":"2026-10-25T18:52:00.000Z","tmin":4.4,"tminAt":"2026-10-25T10:52:00.000Z","tavg":10.7,"humidityMean":76.8,"windMean":1.1,"windMax":2.6,"windMaxAt":"2026-10-25T13:52:00.000Z","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":"2026-10-25T18:52:00.000Z","obsTimeLocal":"2026-10-25T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251852Z VRB05KT 10SM FEW039 18/07 A3050 RMK AO2 SLP327 T01830072 $","temp":18.3,"dewpoint":7.2,"humidity":48,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-25T10:52:00.000Z","obsTimeLocal":"2026-10-25T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251052Z 00000KT 10SM FEW040 04/04 A3057 RMK AO2 SLP354 T00440039 $","temp":4.4,"dewpoint":3.9,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-25T13:52:00.000Z","obsTimeLocal":"2026-10-25T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251352Z 33005KT 10SM FEW039 10/06 A3061 RMK AO2 SLP365 T01000056 $","temp":10,"dewpoint":5.6,"humidity":74,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-26T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"6582fbd3eec29d92","lastChangedAt":"2026-10-26T03:54:41.371Z","corrections":[{"obsTimeUtc":"2026-10-25T19:52:00.000Z","correctedAt":"2026-10-25T19:58:47.162Z","original":"METAR KIAD 251952Z 10SM FEW040 18/07 A3049 RMK AO2 SLP323 T01830067 $","corrected":"METAR KIAD 251952Z COR VRB03KT 10SM FEW040 18/07 A3049 RMK AO2 SLP323 T01830067 $"}],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-25?format=record","status":"anchored","sha256":"adf9981a486e3eb70d153da41441d521a87f362fe9ceafdc8944ad2602db6e0e","revision":"6582fbd3eec29d92","flareTxHash":"0xd1820a9490fa0f7d5a2f7c7036f9dd753ea96f4b0d435325aecd2195f0c7bc47","flareBlock":73860312,"anchoredAt":"2026-11-06T05:01:27.405Z","explorer":"https://flare-explorer.flare.network/tx/0xd1820a9490fa0f7d5a2f7c7036f9dd753ea96f4b0d435325aecd2195f0c7bc47","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":"2026-10-25T18:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-25T10:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":18.3,"tmin":4.4,"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":18.89,"tmin":3.89,"precip":0,"corrected":false,"issuedAt":"2026-10-26T06:25:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-25","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-25"},"observations":[{"obsTimeUtc":"2026-10-25T04:52:00.000Z","obsTimeLocal":"2026-10-25T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250452Z 00000KT 10SM SCT047 06/04 A3055 RMK AO2 SLP344 T00560044 401720022 $","temp":5.6,"dewpoint":4.4,"humidity":92,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T05:52:00.000Z","obsTimeLocal":"2026-10-25T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250552Z 00000KT 10SM BKN046 06/04 A3055 RMK AO2 SLP344 T00560044 10117 20050 51001 $","temp":5.6,"dewpoint":4.4,"humidity":92,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T06:52:00.000Z","obsTimeLocal":"2026-10-25T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250652Z 00000KT 10SM OVC045 07/05 A3055 RMK AO2 SLP345 T00670050 $","temp":6.7,"dewpoint":5,"humidity":89,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T07:52:00.000Z","obsTimeLocal":"2026-10-25T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250752Z 33004KT 10SM OVC042 08/06 A3055 RMK AO2 SLP343 T00780056 $","temp":7.8,"dewpoint":5.6,"humidity":86,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T08:52:00.000Z","obsTimeLocal":"2026-10-25T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250852Z 31003KT 10SM BKN042 08/06 A3055 RMK AO2 SLP345 T00780056 51000 $","temp":7.8,"dewpoint":5.6,"humidity":86,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T09:52:00.000Z","obsTimeLocal":"2026-10-25T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 250952Z 00000KT 10SM FEW040 06/04 A3056 RMK AO2 SLP348 T00560044 $","temp":5.6,"dewpoint":4.4,"humidity":92,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T10:52:00.000Z","obsTimeLocal":"2026-10-25T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251052Z 00000KT 10SM FEW040 04/04 A3057 RMK AO2 SLP354 T00440039 $","temp":4.4,"dewpoint":3.9,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T11:52:00.000Z","obsTimeLocal":"2026-10-25T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251152Z 00000KT 10SM FEW040 05/04 A3058 RMK AO2 SLP356 T00500044 10078 20039 51010 $","temp":5,"dewpoint":4.4,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T12:52:00.000Z","obsTimeLocal":"2026-10-25T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251252Z 34004KT 10SM FEW040 08/05 A3060 RMK AO2 SLP362 T00780050 $","temp":7.8,"dewpoint":5,"humidity":82,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T13:52:00.000Z","obsTimeLocal":"2026-10-25T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251352Z 33005KT 10SM FEW039 10/06 A3061 RMK AO2 SLP365 T01000056 $","temp":10,"dewpoint":5.6,"humidity":74,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T14:52:00.000Z","obsTimeLocal":"2026-10-25T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251452Z 36004KT 10SM FEW039 13/07 A3060 RMK AO2 SLP364 T01280072 50008 $","temp":12.8,"dewpoint":7.2,"humidity":69,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T15:52:00.000Z","obsTimeLocal":"2026-10-25T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251552Z 34004KT 10SM FEW039 16/08 A3059 RMK AO2 SLP359 T01560078 $","temp":15.6,"dewpoint":7.8,"humidity":60,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T16:52:00.000Z","obsTimeLocal":"2026-10-25T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251652Z 00000KT 10SM FEW038 17/07 A3057 RMK AO2 SLP351 T01720072 $","temp":17.2,"dewpoint":7.2,"humidity":52,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T17:52:00.000Z","obsTimeLocal":"2026-10-25T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251752Z VRB05KT 10SM FEW039 17/07 A3053 RMK AO2 SLP338 T01720067 10172 20050 58025 $","temp":17.2,"dewpoint":6.7,"humidity":50,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T18:52:00.000Z","obsTimeLocal":"2026-10-25T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251852Z VRB05KT 10SM FEW039 18/07 A3050 RMK AO2 SLP327 T01830072 $","temp":18.3,"dewpoint":7.2,"humidity":48,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T19:52:00.000Z","obsTimeLocal":"2026-10-25T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 251952Z COR VRB03KT 10SM FEW040 18/07 A3049 RMK AO2 SLP323 T01830067 $","temp":18.3,"dewpoint":6.7,"humidity":47,"wind":1.5,"precipObserved":false,"correctedAt":"2026-10-25T19:58:47.162Z","originalRaw":"METAR KIAD 251952Z 10SM FEW040 18/07 A3049 RMK AO2 SLP323 T01830067 $"},{"obsTimeUtc":"2026-10-25T20:52:00.000Z","obsTimeLocal":"2026-10-25T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 252052Z VRB04KT 10SM FEW040 18/07 A3048 RMK AO2 SLP320 T01830072 56017 $","temp":18.3,"dewpoint":7.2,"humidity":48,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T21:52:00.000Z","obsTimeLocal":"2026-10-25T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 252152Z 23003KT 10SM FEW040 17/07 A3047 RMK AO2 SLP317 T01720072 $","temp":17.2,"dewpoint":7.2,"humidity":52,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T22:52:00.000Z","obsTimeLocal":"2026-10-25T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 252252Z 00000KT 10SM FEW250 13/09 A3047 RMK AO2 SLP317 T01280089 $","temp":12.8,"dewpoint":8.9,"humidity":77,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-25T23:52:00.000Z","obsTimeLocal":"2026-10-25T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 252352Z 16003KT 10SM CLR 10/08 A3046 RMK AO2 SLP317 T01000078 10189 20100 56004 $","temp":10,"dewpoint":7.8,"humidity":86,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-26T00:52:00.000Z","obsTimeLocal":"2026-10-25T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 260052Z 16003KT 10SM CLR 10/08 A3045 RMK AO2 SLP311 T01000078 $","temp":10,"dewpoint":7.8,"humidity":86,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-26T01:52:00.000Z","obsTimeLocal":"2026-10-25T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 260152Z 00000KT 10SM CLR 09/07 A3044 RMK AO2 SLP309 T00890072 $","temp":8.9,"dewpoint":7.2,"humidity":89,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-26T02:52:00.000Z","obsTimeLocal":"2026-10-25T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 260252Z 00000KT 10SM CLR 07/07 A3044 RMK AO2 SLP308 T00720067 56008 $","temp":7.2,"dewpoint":6.7,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-26T03:52:00.000Z","obsTimeLocal":"2026-10-25T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 260352Z 00000KT 10SM CLR 07/06 A3043 RMK AO2 SLP305 T00670061 $","temp":6.7,"dewpoint":6.1,"humidity":96,"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/2026-10-25","json":"https://weathermarket.io/api/station/KIAD/2026-10-25","record":"https://weathermarket.io/api/station/KIAD/2026-10-25?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-24","next":"https://weathermarket.io/station/KIAD/2026-10-26","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=25&year2=2026&month2=10&day2=27&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=25&hora=4&anof=2026&mesf=10&dayf=26&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}