{"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":"2026-10-05","window":{"date":"2026-10-05","timezone":"America/New_York","dayStartUtc":"2026-10-05T04:00:00.000Z","dayEndUtc":"2026-10-06T04:00:00.000Z","utcOffsetStart":"-04:00","utcOffsetEnd":"-04:00","hours":24},"complete":true,"values":{"tmax":22.8,"tmaxAt":"2026-10-05T19:52:00.000Z","tmin":13.9,"tminAt":"2026-10-05T10:52:00.000Z","tavg":17,"humidityMean":75.7,"windMean":2.7,"windMax":6.7,"windMaxAt":"2026-10-05T18:52:00.000Z","precipObservedCount":0,"nObservations":31,"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":"2026-10-05T19:52:00.000Z","obsTimeLocal":"2026-10-05T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051952Z 33010KT 10SM SCT065 23/08 A3003 RMK AO2 SLP167 T02280083","temp":22.8,"dewpoint":8.3,"humidity":39,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-05T10:52:00.000Z","obsTimeLocal":"2026-10-05T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051052Z 21004KT 1/4SM R01R/2400V3000FT FG VV002 14/14 A3006 RMK AO2 SLP179 T01390139 $","temp":13.9,"dewpoint":13.9,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-05T18:52:00.000Z","obsTimeLocal":"2026-10-05T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051852Z 29013G22KT 10SM FEW055 22/08 A3003 RMK AO2 SLP167 T02220083","temp":22.2,"dewpoint":8.3,"humidity":41,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-06T07:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"976e264632bb88a6","lastChangedAt":"2026-10-06T03:55:14.366Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KIAD/2026-10-05?format=record","status":"anchored","sha256":"f517bdfdc3d104fe0c017fd2e25d250fe9f3271073eadf83a43ab91dd6df7db0","revision":"976e264632bb88a6","flareTxHash":"0xb0a0fdef40457c451ebdd6f2cee37878eebe80085016a266a9bf86c32c5cd6ba","flareBlock":71439282,"anchoredAt":"2026-10-06T07:01:18.185Z","explorer":"https://flare-explorer.flare.network/tx/0xb0a0fdef40457c451ebdd6f2cee37878eebe80085016a266a9bf86c32c5cd6ba","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":31,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-05T19:52:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-05T10:52:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":22.8,"tmin":13.9,"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":23.33,"tmin":13.33,"precip":0,"corrected":false,"issuedAt":"2026-10-06T06:29:00.000Z","html":"https://weathermarket.io/nws-cli/KIAD/2026-10-05","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-10-05"},"observations":[{"obsTimeUtc":"2026-10-05T04:52:00.000Z","obsTimeLocal":"2026-10-05T00:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050452Z 00000KT 7SM FEW005 FEW010 OVC030 16/16 A3008 RMK AO2 SLP186 T01560156 401780156 $","temp":15.6,"dewpoint":15.6,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T05:52:00.000Z","obsTimeLocal":"2026-10-05T01:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050552Z 27003KT 7SM R01R/1800V4000FT FEW005 FEW010 OVC030 15/14 A3007 RMK AO2 SLP182 60000 T01500144 10172 20144 58011 $","temp":15,"dewpoint":14.4,"humidity":96,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T06:52:00.000Z","obsTimeLocal":"2026-10-05T02:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050652Z 00000KT 4SM R01R/2800VP6000FT BR FEW001 BKN004 OVC010 14/14 A3007 RMK AO2 SLP182 T01440144 $","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T07:12:00.000Z","obsTimeLocal":"2026-10-05T03:12:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 050712Z 00000KT 1/8SM R01R/2000V3500FT FG VV001 14/14 A3007 RMK AO2 T01440139 $","temp":14.4,"dewpoint":13.9,"humidity":97,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T07:52:00.000Z","obsTimeLocal":"2026-10-05T03:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050752Z 00000KT 1/8SM R01R/2200V2400FT FG VV001 14/14 A3006 RMK AO2 SLP177 T01440144 $","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T08:52:00.000Z","obsTimeLocal":"2026-10-05T04:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050852Z 00000KT 1/8SM R01R/1600V1800FT FG VV001 14/14 A3005 RMK AO2 SLP175 T01440144 58007 $","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T09:52:00.000Z","obsTimeLocal":"2026-10-05T05:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 050952Z 00000KT 1/8SM R01R/2000V3000FT FG VV001 14/14 A3005 RMK AO2 SLP176 T01440144 $","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T10:52:00.000Z","obsTimeLocal":"2026-10-05T06:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051052Z 21004KT 1/4SM R01R/2400V3000FT FG VV002 14/14 A3006 RMK AO2 SLP179 T01390139 $","temp":13.9,"dewpoint":13.9,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T11:52:00.000Z","obsTimeLocal":"2026-10-05T07:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051152Z 22004KT 1/4SM R01R/1800V2400FT FG VV002 14/14 A3007 RMK AO2 SLP181 70002 T01390139 10150 20139 53006","temp":13.9,"dewpoint":13.9,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T12:45:00.000Z","obsTimeLocal":"2026-10-05T08:45:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051245Z VRB05KT 1/4SM R01R/1600V2600FT FG BKN002 OVC006 14/14 A3008 RMK AO2 T01440144","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T12:52:00.000Z","obsTimeLocal":"2026-10-05T08:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051252Z 19004KT 1/4SM R01R/1800V5500FT FG BKN002 OVC006 14/14 A3008 RMK AO2 SLP185 T01440144","temp":14.4,"dewpoint":14.4,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:04:00.000Z","obsTimeLocal":"2026-10-05T09:04:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051304Z 21004KT 1/2SM R01R/4000VP6000FT FG BKN002 OVC006 15/14 A3008 RMK AO2 T01500144","temp":15,"dewpoint":14.4,"humidity":96,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:16:00.000Z","obsTimeLocal":"2026-10-05T09:16:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051316Z 21004KT 1SM R01R/P6000FT BR BKN002 BKN006 15/15 A3008 RMK AO2 T01500150","temp":15,"dewpoint":15,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:24:00.000Z","obsTimeLocal":"2026-10-05T09:24:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051324Z 21004KT 2 1/2SM R01R/2400VP6000FT BR BKN002 BKN006 15/15 A3008 RMK AO2 T01500150","temp":15,"dewpoint":15,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:31:00.000Z","obsTimeLocal":"2026-10-05T09:31:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051331Z 23004KT 3SM BR BKN002 BKN006 BKN250 16/16 A3009 RMK AO2 T01560156","temp":15.6,"dewpoint":15.6,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:46:00.000Z","obsTimeLocal":"2026-10-05T09:46:00-04:00","metarType":"SPECI","raw":"SPECI KIAD 051346Z 26004KT 10SM SCT002 SCT006 BKN250 16/16 A3009 RMK AO2","temp":16,"dewpoint":16,"humidity":100,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T13:52:00.000Z","obsTimeLocal":"2026-10-05T09:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051352Z 29005KT 10SM SCT003 SCT006 BKN250 16/16 A3009 RMK AO2 SLP188 T01610156","temp":16.1,"dewpoint":15.6,"humidity":97,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T14:52:00.000Z","obsTimeLocal":"2026-10-05T10:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051452Z 29010KT 10SM SCT029 BKN250 19/13 A3009 RMK AO2 SLP189 T01890133 51009","temp":18.9,"dewpoint":13.3,"humidity":70,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T15:52:00.000Z","obsTimeLocal":"2026-10-05T11:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051552Z 32012G21KT 10SM BKN036 BKN250 21/12 A3009 RMK AO2 SLP188 T02110117","temp":21.1,"dewpoint":11.7,"humidity":55,"wind":6.2,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T16:52:00.000Z","obsTimeLocal":"2026-10-05T12:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051652Z 32009G17KT 10SM FEW046 SCT250 22/11 A3008 RMK AO2 SLP184 T02170106","temp":21.7,"dewpoint":10.6,"humidity":49,"wind":4.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T17:52:00.000Z","obsTimeLocal":"2026-10-05T13:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051752Z 33008G17KT 10SM FEW050 SCT250 22/11 A3005 RMK AO2 SLP175 T02220111 10222 20139 58014","temp":22.2,"dewpoint":11.1,"humidity":49,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T18:52:00.000Z","obsTimeLocal":"2026-10-05T14:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051852Z 29013G22KT 10SM FEW055 22/08 A3003 RMK AO2 SLP167 T02220083","temp":22.2,"dewpoint":8.3,"humidity":41,"wind":6.7,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T19:52:00.000Z","obsTimeLocal":"2026-10-05T15:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 051952Z 33010KT 10SM SCT065 23/08 A3003 RMK AO2 SLP167 T02280083","temp":22.8,"dewpoint":8.3,"humidity":39,"wind":5.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T20:52:00.000Z","obsTimeLocal":"2026-10-05T16:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 052052Z 33008G16KT 10SM FEW060 23/07 A3003 RMK AO2 SLP169 T02280072 55006","temp":22.8,"dewpoint":7.2,"humidity":37,"wind":4.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T21:52:00.000Z","obsTimeLocal":"2026-10-05T17:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 052152Z 31006KT 10SM FEW060 22/06 A3005 RMK AO2 SLP173 T02170061","temp":21.7,"dewpoint":6.1,"humidity":36,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T22:52:00.000Z","obsTimeLocal":"2026-10-05T18:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 052252Z 33006KT 10SM FEW070 19/07 A3007 RMK AO2 SLP181 T01940067","temp":19.4,"dewpoint":6.7,"humidity":44,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-05T23:52:00.000Z","obsTimeLocal":"2026-10-05T19:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 052352Z 32004KT 10SM FEW070 18/07 A3010 RMK AO2 SLP191 T01780067 10233 20178 53022","temp":17.8,"dewpoint":6.7,"humidity":48,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-06T00:52:00.000Z","obsTimeLocal":"2026-10-05T20:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 060052Z 33007KT 10SM FEW100 17/07 A3011 RMK AO2 SLP195 T01720067","temp":17.2,"dewpoint":6.7,"humidity":50,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-06T01:52:00.000Z","obsTimeLocal":"2026-10-05T21:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 060152Z 33006KT 10SM CLR 17/06 A3013 RMK AO2 SLP202 T01670061","temp":16.7,"dewpoint":6.1,"humidity":50,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-06T02:52:00.000Z","obsTimeLocal":"2026-10-05T22:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 060252Z 33007KT 10SM CLR 16/06 A3015 RMK AO2 SLP209 T01610056 53018","temp":16.1,"dewpoint":5.6,"humidity":50,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-06T03:52:00.000Z","obsTimeLocal":"2026-10-05T23:52:00-04:00","metarType":"METAR","raw":"METAR KIAD 060352Z 34010KT 10SM CLR 16/03 A3016 RMK AO2 SLP210 T01560028","temp":15.6,"dewpoint":2.8,"humidity":42,"wind":5.1,"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/2026-10-05","json":"https://weathermarket.io/api/station/KIAD/2026-10-05","record":"https://weathermarket.io/api/station/KIAD/2026-10-05?format=record","prev":"https://weathermarket.io/station/KIAD/2026-10-04","next":"https://weathermarket.io/station/KIAD/2026-10-06","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=5&year2=2026&month2=10&day2=7&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=5&hora=4&anof=2026&mesf=10&dayf=6&horaf=3&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KIAD"}}}