{"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":"2026-10-22","window":{"date":"2026-10-22","timezone":"America/New_York","dayStartUtc":"2026-10-22T04:00:00.000Z","dayEndUtc":"2026-10-23T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":20,"tmaxAt":"2026-10-22T19:52:00.000Z","tmin":3.3,"tminAt":"2026-10-22T08:52:00.000Z","tavg":11.7,"humidityMean":55.2,"windMean":2.6,"windMax":5.7,"windMaxAt":"2026-10-22T19:52:00.000Z","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":"2026-10-22T19:52:00.000Z","obsTimeLocal":"2026-10-22T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221952Z 34011KT 10SM CLR 20/M01 A3007 RMK AO2 SLP181 T02001011","temp":20,"dewpoint":-1.1,"humidity":24,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-22T08:52:00.000Z","obsTimeLocal":"2026-10-22T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220852Z 00000KT 10SM CLR 03/03 A3008 RMK AO2 SLP187 T00330028 55006 $","temp":3.3,"dewpoint":2.8,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-22T19:52:00.000Z","obsTimeLocal":"2026-10-22T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221952Z 34011KT 10SM CLR 20/M01 A3007 RMK AO2 SLP181 T02001011","temp":20,"dewpoint":-1.1,"humidity":24,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-23T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"13703ef12e731014","lastChangedAt":"2026-10-23T03:54:38.887Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-22?format=record","status":"anchored","sha256":"edc26ab8a01428b32c0ecf6f5dcc89016c1e4befe872050f6fd81be330a953be","revision":"13703ef12e731014","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":23,"suspect":1,"bad":0,"flagged":[{"obsTimeUtc":"2026-10-22T12:52:00.000Z","flag":"suspect","reasons":["step: temperature changed 5.5 C in 60 min (> 5)"]}]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-22T19:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-22T08:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":20,"tmin":3.3,"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":20,"tmin":2.22,"precip":0,"corrected":false,"issuedAt":"2026-10-23T06:25:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-22","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-22"},"observations":[{"obsTimeUtc":"2026-10-22T04:52:00.000Z","obsTimeLocal":"2026-10-22T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220452Z 29003KT 10SM CLR 06/03 A3010 RMK AO2 SLP194 T00560033 401940056 $","temp":5.6,"dewpoint":3.3,"humidity":85,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T05:52:00.000Z","obsTimeLocal":"2026-10-22T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220552Z 00000KT 10SM CLR 06/03 A3010 RMK AO2 SLP193 T00560033 10150 20050 56009 $","temp":5.6,"dewpoint":3.3,"humidity":85,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T06:52:00.000Z","obsTimeLocal":"2026-10-22T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220652Z 33003KT 10SM CLR 06/03 A3009 RMK AO2 SLP191 T00560033 $","temp":5.6,"dewpoint":3.3,"humidity":85,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T07:52:00.000Z","obsTimeLocal":"2026-10-22T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220752Z 00000KT 10SM CLR 04/03 A3008 RMK AO2 SLP187 T00390028 $","temp":3.9,"dewpoint":2.8,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T08:52:00.000Z","obsTimeLocal":"2026-10-22T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220852Z 00000KT 10SM CLR 03/03 A3008 RMK AO2 SLP187 T00330028 55006 $","temp":3.3,"dewpoint":2.8,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T09:52:00.000Z","obsTimeLocal":"2026-10-22T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 220952Z 00000KT 9SM CLR 03/02 A3009 RMK AO2 SLP191 T00330022 $","temp":3.3,"dewpoint":2.2,"humidity":92,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T10:52:00.000Z","obsTimeLocal":"2026-10-22T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221052Z 00000KT 10SM CLR 03/03 A3010 RMK AO2 SLP193 T00330028 $","temp":3.3,"dewpoint":2.8,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T11:52:00.000Z","obsTimeLocal":"2026-10-22T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221152Z 00000KT 10SM CLR 04/02 A3011 RMK AO2 SLP196 T00390022 10067 20022 51008","temp":3.9,"dewpoint":2.2,"humidity":89,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T12:52:00.000Z","obsTimeLocal":"2026-10-22T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221252Z 33003KT 10SM CLR 09/04 A3013 RMK AO2 SLP202 T00940039","temp":9.4,"dewpoint":3.9,"humidity":69,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T13:52:00.000Z","obsTimeLocal":"2026-10-22T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221352Z 34008KT 10SM CLR 12/03 A3014 RMK AO2 SLP205 T01220028","temp":12.2,"dewpoint":2.8,"humidity":53,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T14:52:00.000Z","obsTimeLocal":"2026-10-22T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221452Z 35009KT 10SM CLR 15/02 A3013 RMK AO2 SLP204 T01500017 50008","temp":15,"dewpoint":1.7,"humidity":41,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T15:52:00.000Z","obsTimeLocal":"2026-10-22T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221552Z 35010KT 10SM CLR 17/M02 A3012 RMK AO2 SLP200 T01671017","temp":16.7,"dewpoint":-1.7,"humidity":28,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T16:52:00.000Z","obsTimeLocal":"2026-10-22T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221652Z 32009KT 10SM CLR 18/M01 A3011 RMK AO2 SLP195 T01831011","temp":18.3,"dewpoint":-1.1,"humidity":27,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T17:52:00.000Z","obsTimeLocal":"2026-10-22T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221752Z 34007KT 10SM CLR 19/M02 A3009 RMK AO2 SLP188 T01891022 10189 20039 58016","temp":18.9,"dewpoint":-2.2,"humidity":24,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T18:52:00.000Z","obsTimeLocal":"2026-10-22T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221852Z 32009KT 270V350 10SM CLR 19/M02 A3007 RMK AO2 SLP183 T01941022","temp":19.4,"dewpoint":-2.2,"humidity":23,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T19:52:00.000Z","obsTimeLocal":"2026-10-22T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 221952Z 34011KT 10SM CLR 20/M01 A3007 RMK AO2 SLP181 T02001011","temp":20,"dewpoint":-1.1,"humidity":24,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T20:52:00.000Z","obsTimeLocal":"2026-10-22T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 222052Z 34011G17KT 10SM CLR 19/M03 A3007 RMK AO2 SLP182 T01941028 55006","temp":19.4,"dewpoint":-2.8,"humidity":22,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T21:52:00.000Z","obsTimeLocal":"2026-10-22T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 222152Z 33007KT 10SM CLR 18/M01 A3009 RMK AO2 SLP189 T01831011","temp":18.3,"dewpoint":-1.1,"humidity":27,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T22:52:00.000Z","obsTimeLocal":"2026-10-22T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 222252Z 34009KT 10SM CLR 17/M02 A3011 RMK AO2 SLP195 T01721022","temp":17.2,"dewpoint":-2.2,"humidity":27,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-22T23:52:00.000Z","obsTimeLocal":"2026-10-22T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 222352Z 35009KT 10SM CLR 17/M02 A3013 RMK AO2 SLP203 T01671017 10200 20161 53020","temp":16.7,"dewpoint":-1.7,"humidity":28,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-23T00:52:00.000Z","obsTimeLocal":"2026-10-22T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 230052Z 33005KT 10SM CLR 14/00 A3014 RMK AO2 SLP207 T01390000","temp":13.9,"dewpoint":0,"humidity":39,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-23T01:52:00.000Z","obsTimeLocal":"2026-10-22T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 230152Z 33005KT 10SM CLR 13/01 A3015 RMK AO2 SLP209 T01280006","temp":12.8,"dewpoint":0.6,"humidity":43,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-23T02:52:00.000Z","obsTimeLocal":"2026-10-22T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 230252Z 32004KT 10SM CLR 10/02 A3016 RMK AO2 SLP212 T01000017 51010","temp":10,"dewpoint":1.7,"humidity":56,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-23T03:52:00.000Z","obsTimeLocal":"2026-10-22T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 230352Z 00000KT 10SM CLR 07/02 A3017 RMK AO2 SLP217 T00720022","temp":7.2,"dewpoint":2.2,"humidity":71,"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/2026-10-22","json":"https://weathermarket.io/api/station/KIAD/2026-10-22","record":"https://weathermarket.io/api/station/KIAD/2026-10-22?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-21","next":"https://weathermarket.io/station/KIAD/2026-10-23","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=22&year2=2026&month2=10&day2=24&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=22&hora=4&anof=2026&mesf=10&dayf=23&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}