{"station":{"icao":"KORD","city":{"slug":"chicago","name":"Chicago","country":"United States"},"timezone":"America/Chicago","lat":41.88,"lon":-87.63,"us":true,"html":"https://weathermarket.io/station/KORD","json":"https://weathermarket.io/api/station/KORD","nwsCli":{"html":"https://weathermarket.io/nws-cli/KORD","json":"https://weathermarket.io/api/nws-cli/KORD"}},"date":"2026-10-31","window":{"date":"2026-10-31","timezone":"America/Chicago","dayStartUtc":"2026-10-31T05:00:00.000Z","dayEndUtc":"2026-11-01T05:00:00.000Z","utcOffsetStart":"-05:00","utcOffsetEnd":"-05:00","hours":24},"complete":true,"values":{"tmax":16.1,"tmaxAt":"2026-10-31T19:51:00.000Z","tmin":11.1,"tminAt":"2026-10-31T07:51:00.000Z","tavg":13.4,"humidityMean":69.1,"windMean":2.5,"windMax":3.6,"windMaxAt":"2026-10-31T05:51:00.000Z","precipObservedCount":2,"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":"2026-10-31T19:51:00.000Z","obsTimeLocal":"2026-10-31T14:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311951Z 12005KT 10SM FEW050 BKN070 BKN090 OVC250 16/07 A3031 RMK AO2 SLP266 T01610072","temp":16.1,"dewpoint":7.2,"humidity":56,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},"tmin":{"obsTimeUtc":"2026-10-31T07:51:00.000Z","obsTimeLocal":"2026-10-31T02:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310751Z 00000KT 10SM SCT075 SCT180 BKN220 11/07 A3035 RMK AO2 SLP278 T01110072","temp":11.1,"dewpoint":7.2,"humidity":77,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-31T05:51:00.000Z","obsTimeLocal":"2026-10-31T00:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310551Z 08007KT 10SM BKN080 OVC130 13/08 A3035 RMK AO2 SLP277 T01280083 10128 20117 401440067 58008","temp":12.8,"dewpoint":8.3,"humidity":74,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-11-01T08:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":60,"normalIntervalMin":60,"thresholdMinutes":90},"reasons":[],"holdHours":3},"revision":"ade8b2d53c7fbe89","lastChangedAt":"2026-11-01T04:55:41.592Z","corrections":[],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/KORD/2026-10-31?format=record","status":"anchored","sha256":"27e50bc37fd0b2d4064ce1345d0fc1a546fef20f228b1c6ca76e6c4c0d3c4baa","revision":"ade8b2d53c7fbe89","flareTxHash":"0xbeafe6a3ad54247fe72d5f1f96d26fb596f2522ef5b83868159984619712e433","flareBlock":73829819,"anchoredAt":"2026-11-05T20:01:48.089Z","explorer":"https://flare-explorer.flare.network/tx/0xbeafe6a3ad54247fe72d5f1f96d26fb596f2522ef5b83868159984619712e433","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":"2026-10-31T19:51:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-31T07:51:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":16.1,"tmin":11.1,"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":16.11,"tmin":11.11,"precip":1.78,"corrected":false,"issuedAt":"2026-11-01T06:38:00.000Z","html":"https://weathermarket.io/nws-cli/KORD/2026-10-31","json":"https://weathermarket.io/api/nws-cli/KORD/2026-10-31"},"observations":[{"obsTimeUtc":"2026-10-31T05:51:00.000Z","obsTimeLocal":"2026-10-31T00:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310551Z 08007KT 10SM BKN080 OVC130 13/08 A3035 RMK AO2 SLP277 T01280083 10128 20117 401440067 58008","temp":12.8,"dewpoint":8.3,"humidity":74,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T06:51:00.000Z","obsTimeLocal":"2026-10-31T01:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310651Z 10005KT 10SM BKN075 BKN120 BKN180 12/08 A3034 RMK AO2 SLP276 T01170078","temp":11.7,"dewpoint":7.8,"humidity":77,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T07:51:00.000Z","obsTimeLocal":"2026-10-31T02:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310751Z 00000KT 10SM SCT075 SCT180 BKN220 11/07 A3035 RMK AO2 SLP278 T01110072","temp":11.1,"dewpoint":7.2,"humidity":77,"wind":0,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T08:51:00.000Z","obsTimeLocal":"2026-10-31T03:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310851Z 12003KT 10SM BKN060 BKN110 OVC180 12/08 A3034 RMK AO2 SLP276 T01220078 58001","temp":12.2,"dewpoint":7.8,"humidity":74,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T09:51:00.000Z","obsTimeLocal":"2026-10-31T04:51:00-05:00","metarType":"METAR","raw":"METAR KORD 310951Z 00000KT 10SM -RA BKN055 BKN070 OVC090 12/08 A3035 RMK AO2 RAB51 SLP277 P0000 T01220078","temp":12.2,"dewpoint":7.8,"humidity":74,"wind":0,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T10:51:00.000Z","obsTimeLocal":"2026-10-31T05:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311051Z 10005KT 10SM -RA OVC048 12/08 A3036 RMK AO2 SLP282 P0006 T01220083","temp":12.2,"dewpoint":8.3,"humidity":77,"wind":2.6,"precipObserved":true,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T11:51:00.000Z","obsTimeLocal":"2026-10-31T06:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311151Z 12006KT 10SM OVC047 12/08 A3036 RMK AO2 RAE47 SLP284 P0001 60007 70007 T01170083 10133 20111 52007","temp":11.7,"dewpoint":8.3,"humidity":80,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T12:51:00.000Z","obsTimeLocal":"2026-10-31T07:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311251Z 15006KT 10SM OVC044 12/08 A3037 RMK AO2 SLP286 T01220078","temp":12.2,"dewpoint":7.8,"humidity":74,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T13:51:00.000Z","obsTimeLocal":"2026-10-31T08:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311351Z 14006KT 10SM OVC040 12/08 A3039 RMK AO2 SLP291 T01220083","temp":12.2,"dewpoint":8.3,"humidity":77,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T14:51:00.000Z","obsTimeLocal":"2026-10-31T09:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311451Z 12006KT 10SM OVC050 13/09 A3039 RMK AO2 RAB08E48 SLP291 P0000 60000 T01280089 50008","temp":12.8,"dewpoint":8.9,"humidity":77,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T15:51:00.000Z","obsTimeLocal":"2026-10-31T10:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311551Z 09005KT 10SM BKN050 OVC080 13/09 A3038 RMK AO2 SLP288 T01330089","temp":13.3,"dewpoint":8.9,"humidity":75,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T16:51:00.000Z","obsTimeLocal":"2026-10-31T11:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311651Z 12007KT 8SM BKN050 OVC090 14/08 A3036 RMK AO2 SLP282 T01440083","temp":14.4,"dewpoint":8.3,"humidity":67,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T17:51:00.000Z","obsTimeLocal":"2026-10-31T12:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311751Z 13007KT 10SM SCT075 BKN110 BKN140 OVC250 16/07 A3034 RMK AO2 SLP275 60000 T01560072 10156 20117 58015","temp":15.6,"dewpoint":7.2,"humidity":57,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T18:51:00.000Z","obsTimeLocal":"2026-10-31T13:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311851Z 14006KT 10SM FEW050 BKN060 BKN070 OVC250 16/07 A3033 RMK AO2 SLP272 T01560072","temp":15.6,"dewpoint":7.2,"humidity":57,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T19:51:00.000Z","obsTimeLocal":"2026-10-31T14:51:00-05:00","metarType":"METAR","raw":"METAR KORD 311951Z 12005KT 10SM FEW050 BKN070 BKN090 OVC250 16/07 A3031 RMK AO2 SLP266 T01610072","temp":16.1,"dewpoint":7.2,"humidity":56,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T20:51:00.000Z","obsTimeLocal":"2026-10-31T15:51:00-05:00","metarType":"METAR","raw":"METAR KORD 312051Z 09004KT 10SM BKN100 OVC250 16/08 A3032 RMK AO2 SLP267 T01560083 55009","temp":15.6,"dewpoint":8.3,"humidity":62,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T21:51:00.000Z","obsTimeLocal":"2026-10-31T16:51:00-05:00","metarType":"METAR","raw":"METAR KORD 312151Z 08005KT 10SM FEW070 BKN110 OVC250 16/08 A3032 RMK AO2 SLP270 T01560083 $","temp":15.6,"dewpoint":8.3,"humidity":62,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T22:51:00.000Z","obsTimeLocal":"2026-10-31T17:51:00-05:00","metarType":"METAR","raw":"METAR KORD 312251Z 07007KT 10SM BKN110 OVC200 14/08 A3031 RMK AO2 SLP265 T01440078 $","temp":14.4,"dewpoint":7.8,"humidity":65,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-31T23:51:00.000Z","obsTimeLocal":"2026-10-31T18:51:00-05:00","metarType":"METAR","raw":"METAR KORD 312351Z 10005KT 10SM BKN110 OVC200 14/07 A3033 RMK AO2 SLP271 T01390072 10161 20139 53004 $","temp":13.9,"dewpoint":7.2,"humidity":64,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T00:51:00.000Z","obsTimeLocal":"2026-10-31T19:51:00-05:00","metarType":"METAR","raw":"METAR KORD 010051Z 11005KT 10SM OVC110 14/07 A3034 RMK AO2 SLP274 T01390072 $","temp":13.9,"dewpoint":7.2,"humidity":64,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T01:51:00.000Z","obsTimeLocal":"2026-10-31T20:51:00-05:00","metarType":"METAR","raw":"METAR KORD 010151Z 13004KT 10SM OVC120 13/07 A3034 RMK AO2 SLP274 T01330072 $","temp":13.3,"dewpoint":7.2,"humidity":67,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T02:51:00.000Z","obsTimeLocal":"2026-10-31T21:51:00-05:00","metarType":"METAR","raw":"METAR KORD 010251Z 13003KT 10SM OVC120 13/07 A3034 RMK AO2 SLP276 T01280067 51005 $","temp":12.8,"dewpoint":6.7,"humidity":66,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T03:51:00.000Z","obsTimeLocal":"2026-10-31T22:51:00-05:00","metarType":"METAR","raw":"METAR KORD 010351Z 14004KT 10SM SCT130 BKN180 OVC250 13/07 A3034 RMK AO2 SLP273 T01280067 $","temp":12.8,"dewpoint":6.7,"humidity":66,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-11-01T04:51:00.000Z","obsTimeLocal":"2026-10-31T23:51:00-05:00","metarType":"METAR","raw":"METAR KORD 010451Z 14004KT 10SM FEW055 BKN110 OVC180 12/07 A3033 RMK AO2 SLP270 OCNL LTGIC DSNT SW CB DSNT SW MOV N T01220067 $","temp":12.2,"dewpoint":6.7,"humidity":69,"wind":2.1,"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/KORD/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KORD/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for KORD for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KORD/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/KORD/2026-10-31","json":"https://weathermarket.io/api/station/KORD/2026-10-31","record":"https://weathermarket.io/api/station/KORD/2026-10-31?format=record","prev":"https://weathermarket.io/station/KORD/2026-10-30","next":"https://weathermarket.io/station/KORD/2026-11-01","station":"https://weathermarket.io/station/KORD","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=ORD&data=metar&year1=2026&month1=10&day1=31&year2=2026&month2=11&day2=2&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=KORD&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=31&hora=5&anof=2026&mesf=11&dayf=1&horaf=4&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=KORD"}}}