{"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":"2026-10-15","window":{"date":"2026-10-15","timezone":"America/New_York","dayStartUtc":"2026-10-15T04:00:00.000Z","dayEndUtc":"2026-10-16T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":24.4,"tmaxAt":"2026-10-15T04:52:00.000Z","tmin":15,"tminAt":"2026-10-16T02:52:00.000Z","tavg":18,"humidityMean":80.1,"windMean":2.8,"windMax":6.2,"windMaxAt":"2026-10-15T07:52:00.000Z","precipObservedCount":8,"nObservations":29,"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":"2026-10-15T04:52:00.000Z","obsTimeLocal":"2026-10-15T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150452Z 35007KT 10SM BKN120 OVC160 24/20 A3001 RMK AO2 SLP159 T02440200 403170172 $","temp":24.4,"dewpoint":20,"humidity":76,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-16T02:52:00.000Z","obsTimeLocal":"2026-10-15T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 160252Z 14003KT 4SM -RA BR BKN015 OVC021 15/14 A3012 RMK AO2 DZE16RAB16 SLP199 P0005 60006 T01500144 58010 $","temp":15,"dewpoint":14.4,"humidity":96,"wind":1.5,"precipObserved":true,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-15T07:52:00.000Z","obsTimeLocal":"2026-10-15T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150752Z 01012G18KT 10SM OVC170 22/18 A3006 RMK AO2 SLP174 T02220178 $","temp":22.2,"dewpoint":17.8,"humidity":76,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-16T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"5ea1e2866d221c76","lastChangedAt":"2026-10-16T03:54:41.030Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-15?format=record","status":"anchored","sha256":"6f12af47062d1b3e66c154ee229d2975961cebc5bc956199e5161a8c75805e6c","revision":"5ea1e2866d221c76","flareTxHash":"0x7d4f39f2ba154f5b3af8ec80cf74a3eb6156c10ea4da864d546c688da74598ee","flareBlock":72229217,"anchoredAt":"2026-10-16T07:01:52.579Z","explorer":"https://flare-explorer.flare.network/tx/0x7d4f39f2ba154f5b3af8ec80cf74a3eb6156c10ea4da864d546c688da74598ee","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":29,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-15T04:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-16T02:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":24.4,"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":25,"tmin":15,"precip":3.56,"corrected":false,"issuedAt":"2026-10-16T06:29:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-15","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-15"},"observations":[{"obsTimeUtc":"2026-10-15T04:52:00.000Z","obsTimeLocal":"2026-10-15T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150452Z 35007KT 10SM BKN120 OVC160 24/20 A3001 RMK AO2 SLP159 T02440200 403170172 $","temp":24.4,"dewpoint":20,"humidity":76,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T05:52:00.000Z","obsTimeLocal":"2026-10-15T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150552Z 34005KT 10SM OVC140 24/20 A3001 RMK AO2 SLP158 60000 T02390200 10272 20239 50002 $","temp":23.9,"dewpoint":20,"humidity":79,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T06:52:00.000Z","obsTimeLocal":"2026-10-15T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150652Z 02007KT 10SM OVC150 24/19 A3003 RMK AO2 SLP165 T02390194 $","temp":23.9,"dewpoint":19.4,"humidity":76,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T07:52:00.000Z","obsTimeLocal":"2026-10-15T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150752Z 01012G18KT 10SM OVC170 22/18 A3006 RMK AO2 SLP174 T02220178 $","temp":22.2,"dewpoint":17.8,"humidity":76,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T08:52:00.000Z","obsTimeLocal":"2026-10-15T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150852Z 02009G16KT 10SM OVC070 22/16 A3008 RMK AO2 SLP181 T02170161 53023 $","temp":21.7,"dewpoint":16.1,"humidity":70,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T09:52:00.000Z","obsTimeLocal":"2026-10-15T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 150952Z 03009KT 10SM OVC070 21/16 A3011 RMK AO2 SLP192 T02060161 $","temp":20.6,"dewpoint":16.1,"humidity":75,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T10:52:00.000Z","obsTimeLocal":"2026-10-15T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151052Z 01009KT 10SM BKN080 BKN140 19/14 A3013 RMK AO2 SLP201 T01940144 $","temp":19.4,"dewpoint":14.4,"humidity":73,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T11:52:00.000Z","obsTimeLocal":"2026-10-15T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151152Z 01010KT 10SM BKN038 BKN075 18/12 A3015 RMK AO2 SLP208 T01780122 10244 20178 51025","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T12:52:00.000Z","obsTimeLocal":"2026-10-15T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151252Z 36007KT 10SM FEW065 BKN080 BKN170 18/12 A3018 RMK AO2 SLP219 T01780122","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T13:52:00.000Z","obsTimeLocal":"2026-10-15T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151352Z 01007KT 10SM FEW024 SCT042 BKN075 18/12 A3020 RMK AO2 SLP223 T01780122","temp":17.8,"dewpoint":12.2,"humidity":70,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T14:50:00.000Z","obsTimeLocal":"2026-10-15T10:50:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 151450Z 02008KT 10SM BKN023 BKN042 BKN080 18/13 A3020 RMK AO2","temp":18,"dewpoint":13,"humidity":73,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T14:52:00.000Z","obsTimeLocal":"2026-10-15T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151452Z 03007KT 7SM BKN023 BKN042 OVC080 18/13 A3020 RMK AO2 SLP223 T01780128 50005","temp":17.8,"dewpoint":12.8,"humidity":73,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T15:52:00.000Z","obsTimeLocal":"2026-10-15T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151552Z 08007KT 10SM SCT023 BKN043 OVC055 19/13 A3020 RMK AO2 SLP223 T01890128","temp":18.9,"dewpoint":12.8,"humidity":68,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T16:52:00.000Z","obsTimeLocal":"2026-10-15T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151652Z 07004KT 7SM FEW043 OVC050 18/12 A3019 RMK AO2 SLP220 T01830122","temp":18.3,"dewpoint":12.2,"humidity":68,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T17:52:00.000Z","obsTimeLocal":"2026-10-15T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151752Z 11006KT 7SM FEW027 OVC030 18/12 A3018 RMK AO2 SLP217 T01830117 10194 20172 58007","temp":18.3,"dewpoint":11.7,"humidity":65,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T18:52:00.000Z","obsTimeLocal":"2026-10-15T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151852Z 10004KT 9SM FEW025 BKN031 OVC050 18/12 A3017 RMK AO2 SLP215 VCSH S-SW T01780117","temp":17.8,"dewpoint":11.7,"humidity":67,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T19:14:00.000Z","obsTimeLocal":"2026-10-15T15:14:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 151914Z 10005KT 3SM -RA BR FEW025 BKN031 OVC042 17/12 A3017 RMK AO2 RAB03 VIS NW 2 1/2 P0001 T01670122","temp":16.7,"dewpoint":12.2,"humidity":75,"wind":2.6,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T19:38:00.000Z","obsTimeLocal":"2026-10-15T15:38:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 151938Z 12004KT 9SM -RA FEW025 SCT031 OVC040 16/14 A3017 RMK AO2 RAB03 P0005 T01610139","temp":16.1,"dewpoint":13.9,"humidity":87,"wind":2.1,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T19:52:00.000Z","obsTimeLocal":"2026-10-15T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 151952Z 13004KT 5SM -RA BR FEW018 SCT029 OVC040 16/14 A3016 RMK AO2 RAB03 SLP213 P0005 T01560139","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":2.1,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T20:52:00.000Z","obsTimeLocal":"2026-10-15T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 152052Z 11004KT 10SM FEW011 SCT026 OVC037 16/13 A3016 RMK AO2 RAE25 SLP211 SCT V BKN P0002 60007 T01560133 56005","temp":15.6,"dewpoint":13.3,"humidity":86,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T21:52:00.000Z","obsTimeLocal":"2026-10-15T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 152152Z 11004KT 10SM FEW011 BKN026 OVC031 16/14 A3015 RMK AO2 SLP208 BKN V SCT T01560139","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T22:52:00.000Z","obsTimeLocal":"2026-10-15T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 152252Z 10004KT 10SM FEW007 SCT018 OVC023 16/14 A3015 RMK AO2 SLP207 T01560144","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-15T23:52:00.000Z","obsTimeLocal":"2026-10-15T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 152352Z 12003KT 10SM -RA FEW007 SCT018 OVC024 16/14 A3015 RMK AO2 RAB51 SLP209 P0000 60007 T01560139 10183 20150 55003","temp":15.6,"dewpoint":13.9,"humidity":90,"wind":1.5,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T00:52:00.000Z","obsTimeLocal":"2026-10-15T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 160052Z 00000KT 7SM -RA FEW009 FEW014 OVC023 16/14 A3015 RMK AO2 SLP208 P0000 T01560144","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":0,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T01:52:00.000Z","obsTimeLocal":"2026-10-15T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 160152Z 16003KT 7SM -DZ FEW009 SCT018 OVC022 16/14 A3013 RMK AO2 RAE08DZB26 SLP202 SCT V BKN P0001 T01560144","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":1.5,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T02:16:00.000Z","obsTimeLocal":"2026-10-15T22:16:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 160216Z 16003KT 4SM -RA BR OVC022 16/14 A3013 RMK AO2 DZE16RAB16 P0000 T01560144","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":1.5,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T02:52:00.000Z","obsTimeLocal":"2026-10-15T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 160252Z 14003KT 4SM -RA BR BKN015 OVC021 15/14 A3012 RMK AO2 DZE16RAB16 SLP199 P0005 60006 T01500144 58010 $","temp":15,"dewpoint":14.4,"humidity":96,"wind":1.5,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T03:41:00.000Z","obsTimeLocal":"2026-10-15T23:41:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 160341Z 00000KT 5SM BR OVC018 16/14 A3010 RMK AO2 RAE22 P0000 T01560144 $","temp":15.6,"dewpoint":14.4,"humidity":93,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-16T03:52:00.000Z","obsTimeLocal":"2026-10-15T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 160352Z 16003KT 5SM BR OVC018 16/15 A3009 RMK AO2 RAE22 SLP187 P0000 T01560150 $","temp":15.6,"dewpoint":15,"humidity":96,"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/2026-10-15","json":"https://weathermarket.io/api/station/KIAD/2026-10-15","record":"https://weathermarket.io/api/station/KIAD/2026-10-15?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-14","next":"https://weathermarket.io/station/KIAD/2026-10-16","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=15&year2=2026&month2=10&day2=17&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=15&hora=4&anof=2026&mesf=10&dayf=16&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}