{"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":"2026-11-08","window":{"date":"2026-11-08","timezone":"America/New_York","dayStartUtc":"2026-11-08T05:00:00.000Z","dayEndUtc":"2026-11-09T05:00:00.000Z","utcOffsetStart":"-05:00","utcOffsetEnd":"-05:00","hours":24},"complete":true,"values":{"tmax":17.8,"tmaxAt":"2026-11-08T19:52:00.000Z","tmin":0,"tminAt":"2026-11-09T00:52:00.000Z","tavg":10.7,"humidityMean":59.8,"windMean":3,"windMax":6.7,"windMaxAt":"2026-11-08T14:52:00.000Z","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":"2026-11-08T19:52:00.000Z","obsTimeLocal":"2026-11-08T14:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081952Z 28007KT 10SM FEW150 18/01 A2990 RMK AO2 SLP124 T01780011 $","temp":17.8,"dewpoint":1.1,"humidity":33,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-11-09T00:52:00.000Z","obsTimeLocal":"2026-11-08T19:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090052Z COR 180/05 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $","temp":0,"dewpoint":5,"humidity":100,"wind":null,"precipObserved":false,"correctedAt":"2026-11-09T01:25:38.499Z","originalRaw":"METAR KIAD 090052Z 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $"},"windMax":{"obsTimeUtc":"2026-11-08T14:52:00.000Z","obsTimeLocal":"2026-11-08T09:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081452Z 29013KT 10SM FEW032 12/03 A3005 RMK AO2 SLP174 T01170033 58000 $","temp":11.7,"dewpoint":3.3,"humidity":56,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-11-09T08:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"9ec1d208e91bf25a","lastChangedAt":"2026-11-09T04:54:38.868Z","corrections":[{"obsTimeUtc":"2026-11-09T00:52:00.000Z","correctedAt":"2026-11-09T01:25:38.499Z","original":"METAR KIAD 090052Z 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $","corrected":"METAR KIAD 090052Z COR 180/05 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $"}],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-11-08?format=record","status":"anchored","sha256":"d0e30c9493eecf3853b671a3d29eb74373c55f40c12cdd2ddb8149fdb5f86aa9","revision":"9ec1d208e91bf25a","flareTxHash":"0xd394a57c43dd0f5e5c433d2b4123175963034b166a16d2234e37bdb99bd2b289","flareBlock":74109682,"anchoredAt":"2026-11-09T08:01:25.109Z","explorer":"https://flare-explorer.flare.network/tx/0xd394a57c43dd0f5e5c433d2b4123175963034b166a16d2234e37bdb99bd2b289","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":0,"bad":1,"flagged":[{"obsTimeUtc":"2026-11-09T00:52:00.000Z","flag":"bad","reasons":["dewpoint_over_temp: dewpoint exceeds temperature by 5 C (> 2)","step: temperature changed 11.7 C in 60 min (> 5)"]}]},"extremes":{"tmax":{"obsTimeUtc":"2026-11-08T19:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-11-09T00:52:00.000Z","flag":"bad","reasons":["dewpoint_over_temp: dewpoint exceeds temperature by 5 C (> 2)","step: temperature changed 11.7 C in 60 min (> 5)"]},"anyFlagged":true},"excludingBad":{"tmax":17.8,"tmin":6.7,"differsFromRecord":true},"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":18.33,"tmin":6.11,"precip":0,"corrected":false,"issuedAt":"2026-11-09T07:26:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-11-08","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-11-08"},"observations":[{"obsTimeUtc":"2026-11-08T05:52:00.000Z","obsTimeLocal":"2026-11-08T00:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 080552Z 23003KT 10SM FEW040 07/02 A3004 RMK AO2 SLP174 T00670017 10100 20067 55000 $","temp":6.7,"dewpoint":1.7,"humidity":70,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T06:52:00.000Z","obsTimeLocal":"2026-11-08T01:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 080652Z 28004KT 10SM FEW040 07/02 A3004 RMK AO2 SLP173 T00720017 $","temp":7.2,"dewpoint":1.7,"humidity":68,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T07:52:00.000Z","obsTimeLocal":"2026-11-08T02:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 080752Z 29009KT 10SM FEW037 08/02 A3003 RMK AO2 SLP169 T00780022 $","temp":7.8,"dewpoint":2.2,"humidity":68,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T08:52:00.000Z","obsTimeLocal":"2026-11-08T03:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 080852Z 30008G15KT 10SM CLR 08/02 A3003 RMK AO2 SLP169 T00830022 55004 $","temp":8.3,"dewpoint":2.2,"humidity":65,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T09:52:00.000Z","obsTimeLocal":"2026-11-08T04:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 080952Z 32006KT 10SM FEW030 08/03 A3004 RMK AO2 SLP171 T00830028 $","temp":8.3,"dewpoint":2.8,"humidity":68,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T10:52:00.000Z","obsTimeLocal":"2026-11-08T05:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081052Z 30003KT 10SM SCT031 08/03 A3004 RMK AO2 SLP172 T00830028 $","temp":8.3,"dewpoint":2.8,"humidity":68,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T11:52:00.000Z","obsTimeLocal":"2026-11-08T06:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081152Z 32005KT 10SM FEW032 FEW250 08/03 A3005 RMK AO2 SLP175 T00830028 10089 20061 53005 $","temp":8.3,"dewpoint":2.8,"humidity":68,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T12:52:00.000Z","obsTimeLocal":"2026-11-08T07:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081252Z 29005KT 10SM FEW031 FEW250 09/03 A3005 RMK AO2 SLP177 T00890033 $","temp":8.9,"dewpoint":3.3,"humidity":68,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T13:52:00.000Z","obsTimeLocal":"2026-11-08T08:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081352Z 28011KT 10SM FEW032 11/03 A3005 RMK AO2 SLP177 T01060033 $","temp":10.6,"dewpoint":3.3,"humidity":61,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T14:52:00.000Z","obsTimeLocal":"2026-11-08T09:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081452Z 29013KT 10SM FEW032 12/03 A3005 RMK AO2 SLP174 T01170033 58000 $","temp":11.7,"dewpoint":3.3,"humidity":56,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T15:52:00.000Z","obsTimeLocal":"2026-11-08T10:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081552Z 28006G16KT 10SM FEW250 13/04 A3003 RMK AO2 SLP170 T01330039 $","temp":13.3,"dewpoint":3.9,"humidity":53,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T16:52:00.000Z","obsTimeLocal":"2026-11-08T11:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081652Z 25006G15KT 10SM FEW250 14/03 A2999 RMK AO2 SLP156 T01440033 $","temp":14.4,"dewpoint":3.3,"humidity":47,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T17:52:00.000Z","obsTimeLocal":"2026-11-08T12:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081752Z 28010KT 9SM FEW060 SCT250 16/03 A2997 RMK AO2 SLP147 T01560028 10156 20083 58027 $","temp":15.6,"dewpoint":2.8,"humidity":42,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T18:52:00.000Z","obsTimeLocal":"2026-11-08T13:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081852Z 28008KT 10SM FEW060 SCT250 17/02 A2993 RMK AO2 SLP134 T01670017 $","temp":16.7,"dewpoint":1.7,"humidity":36,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T19:52:00.000Z","obsTimeLocal":"2026-11-08T14:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 081952Z 28007KT 10SM FEW150 18/01 A2990 RMK AO2 SLP124 T01780011 $","temp":17.8,"dewpoint":1.1,"humidity":33,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T20:52:00.000Z","obsTimeLocal":"2026-11-08T15:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 082052Z 19006KT 10SM FEW150 17/04 A2989 RMK AO2 SLP122 T01670039 56024 $","temp":16.7,"dewpoint":3.9,"humidity":43,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T21:52:00.000Z","obsTimeLocal":"2026-11-08T16:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 082152Z 19006KT 10SM CLR 15/03 A2988 RMK AO2 SLP118 T01500033 $","temp":15,"dewpoint":3.3,"humidity":45,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T22:52:00.000Z","obsTimeLocal":"2026-11-08T17:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 082252Z 18005KT 10SM CLR 13/03 A2987 RMK AO2 SLP113 T01330033 $","temp":13.3,"dewpoint":3.3,"humidity":51,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-08T23:52:00.000Z","obsTimeLocal":"2026-11-08T18:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 082352Z 19005KT 10SM CLR 12/03 A2986 RMK AO2 SLP113 T01170033 10183 20111 56010 $","temp":11.7,"dewpoint":3.3,"humidity":56,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T00:52:00.000Z","obsTimeLocal":"2026-11-08T19:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090052Z COR 180/05 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $","temp":0,"dewpoint":5,"humidity":100,"wind":null,"precipObserved":false,"correctedAt":"2026-11-09T01:25:38.499Z","originalRaw":"METAR KIAD 090052Z 10SM CLR 11/04 A2986 RMK AO2 SLP112 T01110039 $"},{"obsTimeUtc":"2026-11-09T01:52:00.000Z","obsTimeLocal":"2026-11-08T20:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090152Z VRB04KT 10SM CLR 09/04 A2986 RMK AO2 SLP112 T00890039 $","temp":8.9,"dewpoint":3.9,"humidity":71,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T02:52:00.000Z","obsTimeLocal":"2026-11-08T21:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090252Z 31003KT 10SM CLR 09/04 A2989 RMK AO2 SLP122 T00940039 53009 $","temp":9.4,"dewpoint":3.9,"humidity":69,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T03:52:00.000Z","obsTimeLocal":"2026-11-08T22:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090352Z 31003KT 10SM CLR 09/03 A2989 RMK AO2 SLP122 T00940028 $","temp":9.4,"dewpoint":2.8,"humidity":63,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-09T04:52:00.000Z","obsTimeLocal":"2026-11-08T23:52:00-05:00","metarType":"METAR","raw":"METAR KIAD 090452Z 00000KT 10SM CLR 08/02 A2990 RMK AO2 SLP126 T00830022 401830061 $","temp":8.3,"dewpoint":2.2,"humidity":65,"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/2026-11-08","json":"https://weathermarket.io/api/station/KIAD/2026-11-08","record":"https://weathermarket.io/api/station/KIAD/2026-11-08?format=record","prev":"https://weathermarket.io/station/KIAD/2026-11-07","next":"https://weathermarket.io/station/KIAD/2026-11-09","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=11&day1=8&year2=2026&month2=11&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=11&day=8&hora=5&anof=2026&mesf=11&dayf=9&horaf=4&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}