{"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":"2026-10-07","window":{"date":"2026-10-07","timezone":"America/New_York","dayStartUtc":"2026-10-07T04:00:00.000Z","dayEndUtc":"2026-10-08T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":22.8,"tmaxAt":"2026-10-07T19:52:00.000Z","tmin":5.6,"tminAt":"2026-10-07T07:52:00.000Z","tavg":14.3,"humidityMean":74.5,"windMean":2.6,"windMax":6.2,"windMaxAt":"2026-10-07T15:52:00.000Z","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":"2026-10-07T19:52:00.000Z","obsTimeLocal":"2026-10-07T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071952Z 16010KT 10SM CLR 23/12 A2991 RMK AO2 SLP127 T02280117","temp":22.8,"dewpoint":11.7,"humidity":50,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-07T07:52:00.000Z","obsTimeLocal":"2026-10-07T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070752Z 00000KT 10SM CLR 06/05 A3008 RMK AO2 SLP185 T00560050 $","temp":5.6,"dewpoint":5,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-07T15:52:00.000Z","obsTimeLocal":"2026-10-07T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071552Z 19012G17KT 10SM CLR 19/09 A3002 RMK AO2 SLP164 T01890094","temp":18.9,"dewpoint":9.4,"humidity":54,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-08T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"f6b4b074827f0d54","lastChangedAt":"2026-10-08T03:55:38.613Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-07?format=record","status":"anchored","sha256":"402fc5c19d92db072aa8f5d20f5574dbf04690b62beabbcb21984d8740bb58f9","revision":"f6b4b074827f0d54","flareTxHash":"0x8901e9806c7525f98cfe106968208a10b0e452499d9ad5877e0ca332dfbdae56","flareBlock":71598895,"anchoredAt":"2026-10-08T07:01:56.146Z","explorer":"https://flare-explorer.flare.network/tx/0x8901e9806c7525f98cfe106968208a10b0e452499d9ad5877e0ca332dfbdae56","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":"2026-10-07T19:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-07T07:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":22.8,"tmin":5.6,"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":22.78,"tmin":5.56,"precip":0,"corrected":false,"issuedAt":"2026-10-08T06:29:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-07","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-07"},"observations":[{"obsTimeUtc":"2026-10-07T04:52:00.000Z","obsTimeLocal":"2026-10-07T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070452Z 00000KT 10SM CLR 07/06 A3011 RMK AO2 SLP195 T00670061 401830067 $","temp":6.7,"dewpoint":6.1,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T05:52:00.000Z","obsTimeLocal":"2026-10-07T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070552Z 00000KT 10SM CLR 07/06 A3009 RMK AO2 SLP191 T00670056 10117 20061 58006 $","temp":6.7,"dewpoint":5.6,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T06:52:00.000Z","obsTimeLocal":"2026-10-07T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070652Z 00000KT 10SM CLR 06/06 A3009 RMK AO2 SLP188 T00610056 $","temp":6.1,"dewpoint":5.6,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T07:52:00.000Z","obsTimeLocal":"2026-10-07T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070752Z 00000KT 10SM CLR 06/05 A3008 RMK AO2 SLP185 T00560050 $","temp":5.6,"dewpoint":5,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T08:52:00.000Z","obsTimeLocal":"2026-10-07T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070852Z 00000KT 10SM CLR 06/05 A3007 RMK AO2 SLP182 T00560050 58009 $","temp":5.6,"dewpoint":5,"humidity":96,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T09:52:00.000Z","obsTimeLocal":"2026-10-07T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 070952Z 00000KT 10SM CLR 06/05 A3007 RMK AO2 SLP181 T00610050 $","temp":6.1,"dewpoint":5,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T10:52:00.000Z","obsTimeLocal":"2026-10-07T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071052Z 00000KT 10SM CLR 06/06 A3008 RMK AO2 SLP185 T00610056","temp":6.1,"dewpoint":5.6,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T11:52:00.000Z","obsTimeLocal":"2026-10-07T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071152Z 00000KT 10SM CLR 08/07 A3006 RMK AO2 SLP181 T00780067 10078 20056 58001","temp":7.8,"dewpoint":6.7,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T12:52:00.000Z","obsTimeLocal":"2026-10-07T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071252Z 20003KT 10SM CLR 12/09 A3007 RMK AO2 SLP182 T01170089","temp":11.7,"dewpoint":8.9,"humidity":83,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T13:52:00.000Z","obsTimeLocal":"2026-10-07T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071352Z 20008KT 10SM CLR 14/09 A3006 RMK AO2 SLP179 T01390089","temp":13.9,"dewpoint":8.9,"humidity":72,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T14:52:00.000Z","obsTimeLocal":"2026-10-07T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071452Z 20009KT 10SM CLR 17/08 A3004 RMK AO2 SLP173 T01670083 58007","temp":16.7,"dewpoint":8.3,"humidity":58,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T15:52:00.000Z","obsTimeLocal":"2026-10-07T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071552Z 19012G17KT 10SM CLR 19/09 A3002 RMK AO2 SLP164 T01890094","temp":18.9,"dewpoint":9.4,"humidity":54,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T16:52:00.000Z","obsTimeLocal":"2026-10-07T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071652Z 19012KT 10SM CLR 21/10 A2999 RMK AO2 SLP156 T02060100","temp":20.6,"dewpoint":10,"humidity":51,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T17:52:00.000Z","obsTimeLocal":"2026-10-07T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071752Z 21008G17KT 10SM CLR 21/11 A2995 RMK AO2 SLP141 T02110106 10217 20078 58031","temp":21.1,"dewpoint":10.6,"humidity":51,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T18:52:00.000Z","obsTimeLocal":"2026-10-07T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071852Z 16010G18KT 10SM CLR 22/11 A2992 RMK AO2 SLP132 T02220111","temp":22.2,"dewpoint":11.1,"humidity":49,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T19:52:00.000Z","obsTimeLocal":"2026-10-07T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 071952Z 16010KT 10SM CLR 23/12 A2991 RMK AO2 SLP127 T02280117","temp":22.8,"dewpoint":11.7,"humidity":50,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T20:52:00.000Z","obsTimeLocal":"2026-10-07T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 072052Z 17008KT 10SM CLR 22/12 A2989 RMK AO2 SLP122 T02220117 56019","temp":22.2,"dewpoint":11.7,"humidity":51,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T21:52:00.000Z","obsTimeLocal":"2026-10-07T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 072152Z 20010KT 10SM CLR 21/12 A2989 RMK AO2 SLP120 T02110122","temp":21.1,"dewpoint":12.2,"humidity":57,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T22:52:00.000Z","obsTimeLocal":"2026-10-07T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 072252Z 17005KT 10SM CLR 19/12 A2989 RMK AO2 SLP120 T01890122","temp":18.9,"dewpoint":12.2,"humidity":65,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-07T23:52:00.000Z","obsTimeLocal":"2026-10-07T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 072352Z 16006KT 10SM CLR 18/12 A2989 RMK AO2 SLP122 T01780122 10228 20178 53000","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T00:52:00.000Z","obsTimeLocal":"2026-10-07T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080052Z 17006KT 10SM CLR 17/13 A2990 RMK AO2 SLP125 T01720128","temp":17.2,"dewpoint":12.8,"humidity":75,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T01:52:00.000Z","obsTimeLocal":"2026-10-07T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080152Z 18008KT 10SM CLR 18/13 A2990 RMK AO2 SLP125 T01780128","temp":17.8,"dewpoint":12.8,"humidity":73,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T02:52:00.000Z","obsTimeLocal":"2026-10-07T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080252Z 18003KT 10SM CLR 16/13 A2990 RMK AO2 SLP125 T01610128 51003","temp":16.1,"dewpoint":12.8,"humidity":81,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-08T03:52:00.000Z","obsTimeLocal":"2026-10-07T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 080352Z 22003KT 10SM CLR 14/12 A2990 RMK AO2 SLP125 T01440122","temp":14.4,"dewpoint":12.2,"humidity":87,"wind":1.5,"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/2026-10-07","json":"https://weathermarket.io/api/station/KIAD/2026-10-07","record":"https://weathermarket.io/api/station/KIAD/2026-10-07?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-06","next":"https://weathermarket.io/station/KIAD/2026-10-08","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=7&year2=2026&month2=10&day2=9&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=7&hora=4&anof=2026&mesf=10&dayf=8&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}