{"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":"2026-10-12","window":{"date":"2026-10-12","timezone":"America/New_York","dayStartUtc":"2026-10-12T04:00:00.000Z","dayEndUtc":"2026-10-13T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":23.9,"tmaxAt":"2026-10-12T20:52:00.000Z","tmin":15,"tminAt":"2026-10-13T02:52:00.000Z","tavg":18.3,"humidityMean":79.8,"windMean":4.8,"windMax":7.7,"windMaxAt":"2026-10-12T05:52:00.000Z","precipObservedCount":5,"nObservations":30,"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":"2026-10-12T20:52:00.000Z","obsTimeLocal":"2026-10-12T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 122052Z 29012KT 10SM BKN041 BKN250 24/15 A2991 RMK AO2 SLP128 T02390150 55007 $","temp":23.9,"dewpoint":15,"humidity":57,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-13T02:52:00.000Z","obsTimeLocal":"2026-10-12T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130252Z 14003KT 10SM CLR 15/14 A2997 RMK AO2 SLP146 T01500139 53010 $","temp":15,"dewpoint":13.9,"humidity":93,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-12T05:52:00.000Z","obsTimeLocal":"2026-10-12T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120552Z 35015G27KT 4SM R01R/3000VP6000FT -RA BR BKN008 OVC018 16/14 A2974 RMK AO2 PK WND 35027/0544 SLP068 P0014 60014 T01560144 10161 20156 56016 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":7.7,"precipObserved":true,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-13T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"e6fd4fcfd2ba13a8","lastChangedAt":"2026-10-13T03:54:38.765Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-12?format=record","status":"anchored","sha256":"a9dadb958af04c2b29705e813e5ec6754ebe93564db6f982e7c54dff8c424b5d","revision":"e6fd4fcfd2ba13a8","flareTxHash":"0x812b93f68571d3c6ae72c3c45f9d77063b9a63d8624e3739b1f100665395307b","flareBlock":71992977,"anchoredAt":"2026-10-13T07:01:19.370Z","explorer":"https://flare-explorer.flare.network/tx/0x812b93f68571d3c6ae72c3c45f9d77063b9a63d8624e3739b1f100665395307b","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":30,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-12T20:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-13T02:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":23.9,"tmin":15,"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":24.44,"tmin":13.89,"precip":24.38,"corrected":false,"issuedAt":"2026-10-13T06:24:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-12","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-12"},"observations":[{"obsTimeUtc":"2026-10-12T04:03:00.000Z","obsTimeLocal":"2026-10-12T00:03:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 120403Z 34009KT 5SM BR OVC008 16/16 A2976 RMK AO2 T01610156 $","temp":16.1,"dewpoint":15.6,"humidity":97,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T04:34:00.000Z","obsTimeLocal":"2026-10-12T00:34:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 120434Z 34011KT 4SM -RA BR OVC006 16/15 A2975 RMK AO2 RAB30 P0000 T01560150 $","temp":15.6,"dewpoint":15,"humidity":96,"wind":5.7,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T04:52:00.000Z","obsTimeLocal":"2026-10-12T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120452Z 34012KT 4SM -RA BR OVC006 16/15 A2975 RMK AO2 RAB30 SLP072 P0000 T01560150 401720156 $","temp":15.6,"dewpoint":15,"humidity":96,"wind":6.2,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T05:52:00.000Z","obsTimeLocal":"2026-10-12T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120552Z 35015G27KT 4SM R01R/3000VP6000FT -RA BR BKN008 OVC018 16/14 A2974 RMK AO2 PK WND 35027/0544 SLP068 P0014 60014 T01560144 10161 20156 56016 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":7.7,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T06:52:00.000Z","obsTimeLocal":"2026-10-12T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120652Z 34011KT 4SM -RA BR BKN009 OVC020 16/14 A2975 RMK AO2 SLP074 P0053 T01560144 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":5.7,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T07:52:00.000Z","obsTimeLocal":"2026-10-12T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120752Z 32011G20KT 4SM -RA BR SCT010 BKN015 OVC030 16/14 A2976 RMK AO2 SLP076 P0018 T01560144 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":5.7,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T08:52:00.000Z","obsTimeLocal":"2026-10-12T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120852Z 33011KT 6SM BR BKN010 BKN015 OVC030 16/14 A2978 RMK AO2 RAE50 SLP083 P0011 60082 T01560144 53015 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T09:44:00.000Z","obsTimeLocal":"2026-10-12T05:44:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 120944Z 33010KT 6SM BR FEW008 BKN010 OVC037 16/14 A2982 RMK AO2 T01560139 $","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T09:52:00.000Z","obsTimeLocal":"2026-10-12T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 120952Z 33009G17KT 6SM BR FEW008 BKN010 OVC037 16/14 A2982 RMK AO2 SLP097 T01560139 $","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T10:44:00.000Z","obsTimeLocal":"2026-10-12T06:44:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 121044Z 33008KT 6SM BR SCT019 BKN044 16/14 A2984 RMK AO2 T01560139 $","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T10:52:00.000Z","obsTimeLocal":"2026-10-12T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121052Z 33010KT 6SM BR FEW018 BKN044 16/14 A2985 RMK AO2 SLP106 T01560139 $","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T11:52:00.000Z","obsTimeLocal":"2026-10-12T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121152Z 32011G18KT 10SM BKN033 16/14 A2986 RMK AO2 SLP110 60082 70192 T01610139 10161 20150 51027 $","temp":16.1,"dewpoint":13.9,"humidity":87,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T12:52:00.000Z","obsTimeLocal":"2026-10-12T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121252Z VRB05KT 10SM BKN035 18/14 A2988 RMK AO2 SLP116 T01780139 $","temp":17.8,"dewpoint":13.9,"humidity":78,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T13:52:00.000Z","obsTimeLocal":"2026-10-12T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121352Z 32012G23KT 10SM BKN034 19/14 A2990 RMK AO2 SLP124 T01890139 $","temp":18.9,"dewpoint":13.9,"humidity":73,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T14:41:00.000Z","obsTimeLocal":"2026-10-12T10:41:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 121441Z 34014G21KT 10SM BKN027 BKN032 19/14 A2992 RMK AO2 PK WND 32027/1422 T01940144 $","temp":19.4,"dewpoint":14.4,"humidity":73,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T14:52:00.000Z","obsTimeLocal":"2026-10-12T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121452Z 33014G24KT 10SM BKN027 BKN033 20/14 A2992 RMK AO2 PK WND 32027/1422 SLP130 T02000144 51021 $","temp":20,"dewpoint":14.4,"humidity":70,"wind":7.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T15:52:00.000Z","obsTimeLocal":"2026-10-12T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121552Z 32012G19KT 10SM BKN029 21/14 A2994 RMK AO2 PK WND 31026/1459 SLP136 T02060144 $","temp":20.6,"dewpoint":14.4,"humidity":68,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T16:52:00.000Z","obsTimeLocal":"2026-10-12T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121652Z 34012G19KT 10SM BKN029 21/14 A2995 RMK AO2 SLP138 T02110144 $","temp":21.1,"dewpoint":14.4,"humidity":66,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T16:54:00.000Z","obsTimeLocal":"2026-10-12T12:54:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 121654Z 33013G19KT 10SM BKN030 21/14 A2995 RMK AO2 T02110144 $","temp":21.1,"dewpoint":14.4,"humidity":66,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T17:52:00.000Z","obsTimeLocal":"2026-10-12T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121752Z 34007KT 10SM BKN033 23/15 A2993 RMK AO2 SLP134 T02280150 10228 20161 50004 $","temp":22.8,"dewpoint":15,"humidity":61,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T18:52:00.000Z","obsTimeLocal":"2026-10-12T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121852Z 30007KT 270V330 10SM SCT035 BKN250 23/16 A2992 RMK AO2 SLP129 T02280156 $","temp":22.8,"dewpoint":15.6,"humidity":64,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T19:52:00.000Z","obsTimeLocal":"2026-10-12T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 121952Z 32010KT 10SM BKN040 BKN250 23/16 A2991 RMK AO2 SLP126 T02330156 $","temp":23.3,"dewpoint":15.6,"humidity":62,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T20:52:00.000Z","obsTimeLocal":"2026-10-12T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 122052Z 29012KT 10SM BKN041 BKN250 24/15 A2991 RMK AO2 SLP128 T02390150 55007 $","temp":23.9,"dewpoint":15,"humidity":57,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T21:52:00.000Z","obsTimeLocal":"2026-10-12T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 122152Z 29011G18KT 10SM FEW041 SCT200 22/15 A2992 RMK AO2 SLP130 T02220150 $","temp":22.2,"dewpoint":15,"humidity":64,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T22:52:00.000Z","obsTimeLocal":"2026-10-12T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 122252Z 29013KT 10SM FEW100 SCT200 21/14 A2992 RMK AO2 SLP129 T02110144 $","temp":21.1,"dewpoint":14.4,"humidity":66,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T23:52:00.000Z","obsTimeLocal":"2026-10-12T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 122352Z 30004KT 10SM FEW100 SCT200 20/14 A2994 RMK AO2 SLP136 T02000144 10244 20200 53008 $","temp":20,"dewpoint":14.4,"humidity":70,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T00:52:00.000Z","obsTimeLocal":"2026-10-12T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130052Z 00000KT 10SM FEW100 SCT200 17/14 A2994 RMK AO2 SLP138 T01720144 $","temp":17.2,"dewpoint":14.4,"humidity":84,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T01:52:00.000Z","obsTimeLocal":"2026-10-12T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130152Z 32003KT 10SM CLR 18/14 A2996 RMK AO2 SLP142 T01780144 $","temp":17.8,"dewpoint":14.4,"humidity":81,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T02:52:00.000Z","obsTimeLocal":"2026-10-12T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130252Z 14003KT 10SM CLR 15/14 A2997 RMK AO2 SLP146 T01500139 53010 $","temp":15,"dewpoint":13.9,"humidity":93,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-13T03:52:00.000Z","obsTimeLocal":"2026-10-12T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 130352Z 00000KT 10SM CLR 15/13 A2998 RMK AO2 SLP150 T01500133 $","temp":15,"dewpoint":13.3,"humidity":90,"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/2026-10-12","json":"https://weathermarket.io/api/station/KIAD/2026-10-12","record":"https://weathermarket.io/api/station/KIAD/2026-10-12?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-11","next":"https://weathermarket.io/station/KIAD/2026-10-13","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=12&year2=2026&month2=10&day2=14&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=12&hora=4&anof=2026&mesf=10&dayf=13&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}