{"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":"2026-11-09","window":{"date":"2026-11-09","timezone":"America/New_York","dayStartUtc":"2026-11-09T05:00:00.000Z","dayEndUtc":"2026-11-10T05:00:00.000Z","utcOffsetStart":"-05:00","utcOffsetEnd":"-05:00","hours":24},"complete":true,"values":{"tmax":17.8,"tmaxAt":"2026-11-09T18:52:00.000Z","tmin":5,"tminAt":"2026-11-10T04:52:00.000Z","tavg":12.1,"humidityMean":53.4,"windMean":3.9,"windMax":10.3,"windMaxAt":"2026-11-09T14:52:00.000Z","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":"2026-11-09T18:52:00.000Z","obsTimeLocal":"2026-11-09T13:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091852Z 31010G22KT 10SM FEW070 18/02 A2995 RMK AO2 PK WND 28026/1835 SLP142 T01780022 $","temp":17.8,"dewpoint":2.2,"humidity":35,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-11-10T04:52:00.000Z","obsTimeLocal":"2026-11-09T23:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100452Z 00000KT 10SM CLR 05/03 A3009 RMK AO2 SLP189 T00500028 401780044 $","temp":5,"dewpoint":2.8,"humidity":86,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-11-09T14:52:00.000Z","obsTimeLocal":"2026-11-09T09:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091452Z 29020G30KT 10SM BKN050 14/03 A2996 RMK AO2 PK WND 29030/1439 SLP146 T01440028 50006 $","temp":14.4,"dewpoint":2.8,"humidity":46,"wind":10.3,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-11-10T08:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"effe974e2e951f85","lastChangedAt":"2026-11-10T04:55:12.665Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-11-09?format=record","status":"anchored","sha256":"1c3fb32a09c40da340dbfa214ca87b31816b851ada1afdd9f71ad5bc071b09be","revision":"effe974e2e951f85","flareTxHash":"0xb85fce05b07fbe15da4e658ab57213713b4ebdcfbb36aa75c6548ecc2c4b74c5","flareBlock":74189609,"anchoredAt":"2026-11-10T08:01:18.173Z","explorer":"https://flare-explorer.flare.network/tx/0xb85fce05b07fbe15da4e658ab57213713b4ebdcfbb36aa75c6548ecc2c4b74c5","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":"2026-11-09T18:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-11-10T04:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":17.8,"tmin":5,"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":17.78,"tmin":4.44,"precip":0,"corrected":false,"issuedAt":"2026-11-10T07:24:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-11-09","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-11-09"},"observations":[{"obsTimeUtc":"2026-11-09T05:52:00.000Z","obsTimeLocal":"2026-11-09T00:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090552Z 22005KT 10SM CLR 12/00 A2990 RMK AO2 SLP123 T01220000 10128 20067 50003 $","temp":12.2,"dewpoint":0,"humidity":43,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T06:52:00.000Z","obsTimeLocal":"2026-11-09T01:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090652Z 21003KT 10SM CLR 10/01 A2990 RMK AO2 SLP123 T01000011 $","temp":10,"dewpoint":1.1,"humidity":54,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T07:52:00.000Z","obsTimeLocal":"2026-11-09T02:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090752Z 24005KT 10SM CLR 10/02 A2989 RMK AO2 SLP120 T01000017 $","temp":10,"dewpoint":1.7,"humidity":56,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T08:52:00.000Z","obsTimeLocal":"2026-11-09T03:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090852Z 25004KT 10SM FEW050 07/02 A2989 RMK AO2 SLP120 T00670022 56004 $","temp":6.7,"dewpoint":2.2,"humidity":73,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T09:52:00.000Z","obsTimeLocal":"2026-11-09T04:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090952Z 25005KT 10SM CLR 07/02 A2990 RMK AO2 SLP125 T00720022 $","temp":7.2,"dewpoint":2.2,"humidity":71,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T10:52:00.000Z","obsTimeLocal":"2026-11-09T05:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091052Z 00000KT 10SM SCT050 06/02 A2993 RMK AO2 SLP133 T00560022 $","temp":5.6,"dewpoint":2.2,"humidity":79,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T11:52:00.000Z","obsTimeLocal":"2026-11-09T06:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091152Z 26005KT 10SM FEW055 SCT250 09/03 A2995 RMK AO2 SLP141 T00940028 10122 20044 53020","temp":9.4,"dewpoint":2.8,"humidity":63,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T12:52:00.000Z","obsTimeLocal":"2026-11-09T07:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091252Z 25006KT 10SM FEW055 12/03 A2996 RMK AO2 SLP145 T01220033","temp":12.2,"dewpoint":3.3,"humidity":55,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T13:52:00.000Z","obsTimeLocal":"2026-11-09T08:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091352Z 28008G20KT 10SM SCT050 13/03 A2996 RMK AO2 SLP147 T01330028 $","temp":13.3,"dewpoint":2.8,"humidity":49,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T14:52:00.000Z","obsTimeLocal":"2026-11-09T09:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091452Z 29020G30KT 10SM BKN050 14/03 A2996 RMK AO2 PK WND 29030/1439 SLP146 T01440028 50006 $","temp":14.4,"dewpoint":2.8,"humidity":46,"wind":10.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T15:52:00.000Z","obsTimeLocal":"2026-11-09T10:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091552Z 30018G28KT 9SM BKN055 16/03 A2997 RMK AO2 PK WND 30040/1504 SLP146 T01560028 $","temp":15.6,"dewpoint":2.8,"humidity":42,"wind":9.3,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T16:52:00.000Z","obsTimeLocal":"2026-11-09T11:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091652Z 28019G30KT 10SM SCT060 BKN250 17/02 A2996 RMK AO2 PK WND 29032/1603 SLP144 T01670022 $","temp":16.7,"dewpoint":2.2,"humidity":38,"wind":9.8,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T17:40:00.000Z","obsTimeLocal":"2026-11-09T12:40:00-05:00","metarType":"SPECI","raw":"SPECI KIAD 091740Z 33011G19KT 10SM SCT065 BKN250 17/03 A2997 RMK AO2 PK WND 29027/1655 T01720028 $","temp":17.2,"dewpoint":2.8,"humidity":38,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T17:52:00.000Z","obsTimeLocal":"2026-11-09T12:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091752Z 32011G23KT 10SM SCT065 17/02 A2997 RMK AO2 PK WND 29027/1655 SLP146 T01720022 10178 20094 53001 $","temp":17.2,"dewpoint":2.2,"humidity":37,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T18:52:00.000Z","obsTimeLocal":"2026-11-09T13:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091852Z 31010G22KT 10SM FEW070 18/02 A2995 RMK AO2 PK WND 28026/1835 SLP142 T01780022 $","temp":17.8,"dewpoint":2.2,"humidity":35,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T19:52:00.000Z","obsTimeLocal":"2026-11-09T14:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 091952Z 32014G25KT 10SM FEW070 17/02 A2997 RMK AO2 SLP149 T01720017 $","temp":17.2,"dewpoint":1.7,"humidity":35,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T20:52:00.000Z","obsTimeLocal":"2026-11-09T15:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 092052Z 33013G21KT 10SM FEW055 17/02 A2999 RMK AO2 SLP154 T01670017 53007 $","temp":16.7,"dewpoint":1.7,"humidity":36,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T21:52:00.000Z","obsTimeLocal":"2026-11-09T16:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 092152Z 34009KT 10SM FEW055 15/02 A3001 RMK AO2 SLP162 T01500022 $","temp":15,"dewpoint":2.2,"humidity":42,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T22:52:00.000Z","obsTimeLocal":"2026-11-09T17:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 092252Z 35007KT 10SM FEW250 14/02 A3004 RMK AO2 SLP171 T01440022 $","temp":14.4,"dewpoint":2.2,"humidity":44,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T23:52:00.000Z","obsTimeLocal":"2026-11-09T18:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 092352Z 34007KT 10SM FEW250 13/02 A3006 RMK AO2 SLP179 T01280022 10178 20128 53024 $","temp":12.8,"dewpoint":2.2,"humidity":48,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-10T00:52:00.000Z","obsTimeLocal":"2026-11-09T19:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100052Z 33004KT 10SM FEW250 12/02 A3007 RMK AO2 SLP183 T01170022 $","temp":11.7,"dewpoint":2.2,"humidity":52,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-10T01:52:00.000Z","obsTimeLocal":"2026-11-09T20:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100152Z 33003KT 10SM FEW250 11/02 A3009 RMK AO2 SLP188 T01060022 $","temp":10.6,"dewpoint":2.2,"humidity":56,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-10T02:52:00.000Z","obsTimeLocal":"2026-11-09T21:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100252Z 00000KT 10SM FEW250 07/03 A3009 RMK AO2 SLP189 T00720028 51009 $","temp":7.2,"dewpoint":2.8,"humidity":74,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-10T03:52:00.000Z","obsTimeLocal":"2026-11-09T22:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100352Z 00000KT 10SM CLR 06/03 A3008 RMK AO2 SLP186 T00560028 $","temp":5.6,"dewpoint":2.8,"humidity":82,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-10T04:52:00.000Z","obsTimeLocal":"2026-11-09T23:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 100452Z 00000KT 10SM CLR 05/03 A3009 RMK AO2 SLP189 T00500028 401780044 $","temp":5,"dewpoint":2.8,"humidity":86,"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/2026-11-09","json":"https://weathermarket.io/api/station/KIAD/2026-11-09","record":"https://weathermarket.io/api/station/KIAD/2026-11-09?format=record","prev":"https://weathermarket.io/station/KIAD/2026-11-08","next":"https://weathermarket.io/station/KIAD/2026-11-10","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=11&day1=9&year2=2026&month2=11&day2=11&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=11&day=9&hora=5&anof=2026&mesf=11&dayf=10&horaf=4&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}