Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-20 · 2026-10-22 → · All dates for KIAD · JSON
METAR KIAD 211952Z 32007KT 10SM FEW250 19/04 A3014 RMK AO2 SLP205 T01940039
METAR KIAD 210852Z 00000KT 10SM CLR 07/03 A3024 RMK AO2 SLP238 T00670033 55001 $
Local day 2026-10-21 00:00 EDT → 2026-10-22 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 67°F (19.44°C) · Low 42°F (5.56°C) · NWS CLI archive
US markets usually settle on the official NWS daily climate value (CLI), which is archived separately; the two values can differ by about a degree and are shown side by side.
final at 2026-10-22 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 f21ae619fe84ab18c17914bd15e82729c9dd4620f82486ff67f27855267fecd9
Transaction 0xd1820a9490fa0f7d5a2f7c7036f9dd753ea96f4b0d435325aecd2195f0c7bc47 · 2026-11-06 00:01 EST
GET the record bytes, SHA-256 them, and call SnapshotAnchor.isAnchored(sha256) on Flare - the anchored record is the one to settle on
Canonical record bytes (hash these) · SnapshotAnchor 0x2B598129… (chain 14)
good 24 · suspect 0 · bad 0 · High good · Low good
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.
| Time | Type | Temp °C | Dew °C | Wind m/s | Raw report |
|---|---|---|---|---|---|
| 2026-10-21 00:52 EDT | METAR | 13.3° | 3.3° | 1.5 | METAR KIAD 210452Z 33003KT 10SM CLR 13/03 A3024 RMK AO2 SLP239 T01330033 402170056 $ |
| 2026-10-21 01:52 EDT | METAR | 12.2° | 3.3° | 2.6 | METAR KIAD 210552Z 01005KT 10SM CLR 12/03 A3024 RMK AO2 SLP239 T01220033 10178 20072 56001 $ |
| 2026-10-21 02:52 EDT | METAR | 8.9° | 3.9° | 1.5 | METAR KIAD 210652Z 29003KT 10SM CLR 09/04 A3024 RMK AO2 SLP240 T00890039 $ |
| 2026-10-21 03:52 EDT | METAR | 7.2° | 3.3° | 0 | METAR KIAD 210752Z 00000KT 10SM CLR 07/03 A3023 RMK AO2 SLP236 T00720033 $ |
| 2026-10-21 04:52 EDT | METAR | 6.7°min | 3.3° | 0 | METAR KIAD 210852Z 00000KT 10SM CLR 07/03 A3024 RMK AO2 SLP238 T00670033 55001 $ |
| 2026-10-21 05:52 EDT | METAR | 10.6° | 3.3° | 2.6 | METAR KIAD 210952Z 36005KT 10SM CLR 11/03 A3026 RMK AO2 SLP245 T01060033 $ |
| 2026-10-21 06:52 EDT | METAR | 10.6° | 3.3° | 3.6 | METAR KIAD 211052Z 36007KT 10SM CLR 11/03 A3026 RMK AO2 SLP247 T01060033 $ |
| 2026-10-21 07:52 EDT | METAR | 10.6° | 3.3° | 3.6 | METAR KIAD 211152Z 36007KT 10SM CLR 11/03 A3027 RMK AO2 SLP248 T01060033 10122 20056 51010 |
| 2026-10-21 08:52 EDT | METAR | 11.7° | 3.3° | 4.6 | METAR KIAD 211252Z 35009KT 10SM FEW060 12/03 A3028 RMK AO2 SLP253 T01170033 |
| 2026-10-21 09:52 EDT | METAR | 13.3° | 3.3° | 3.6 | METAR KIAD 211352Z 01007KT 7SM FEW080 13/03 A3028 RMK AO2 SLP252 T01330033 |
| 2026-10-21 10:52 EDT | METAR | 14.4° | 2.8° | 4.1 | METAR KIAD 211452Z 01008KT 10SM FEW080 14/03 A3027 RMK AO2 SLP249 T01440028 50000 |
| 2026-10-21 11:52 EDT | METAR | 16.1° | 3.3° | 3.6 | METAR KIAD 211552Z 36007KT 10SM FEW065 16/03 A3025 RMK AO2 SLP243 T01610033 |
| 2026-10-21 12:52 EDT | METAR | 17.2° | 2.2° | 4.6 | METAR KIAD 211652Z 36009KT 10SM FEW060 17/02 A3022 RMK AO2 SLP232 T01720022 |
| 2026-10-21 13:52 EDT | METAR | 17.8° | 1.7° | 5.1 | METAR KIAD 211752Z 36010G17KT 10SM FEW060 FEW250 18/02 A3019 RMK AO2 SLP221 T01780017 10183 20106 58027 |
| 2026-10-21 14:52 EDT | METAR | 18.9° | 2.2° | 4.6 | METAR KIAD 211852Z 35009KT 9SM FEW065 FEW250 19/02 A3016 RMK AO2 SLP211 T01890022 |
| 2026-10-21 15:52 EDT | METAR | 19.4°max | 3.9° | 3.6 | METAR KIAD 211952Z 32007KT 10SM FEW250 19/04 A3014 RMK AO2 SLP205 T01940039 |
| 2026-10-21 16:52 EDT | METAR | 18.9° | 3.3° | 4.6 | METAR KIAD 212052Z 33009KT 10SM CLR 19/03 A3013 RMK AO2 SLP202 T01890033 56020 |
| 2026-10-21 17:52 EDT | METAR | 17.8° | 2.8° | 3.6 | METAR KIAD 212152Z 32007KT 10SM FEW250 18/03 A3013 RMK AO2 SLP201 T01780028 $ |
| 2026-10-21 18:52 EDT | METAR | 15.6° | 3.3° | 2.6 | METAR KIAD 212252Z 33005KT 10SM FEW120 FEW250 16/03 A3013 RMK AO2 SLP201 T01560033 $ |
| 2026-10-21 19:52 EDT | METAR | 13.3° | 3.3° | 2.6 | METAR KIAD 212352Z 02005KT 10SM CLR 13/03 A3014 RMK AO2 SLP206 T01330033 10194 20133 53003 $ |
| 2026-10-21 20:52 EDT | METAR | 13.9° | 2.8° | 3.6 | METAR KIAD 220052Z 02007KT 10SM CLR 14/03 A3013 RMK AO2 SLP203 T01390028 $ |
| 2026-10-21 21:52 EDT | METAR | 10° | 3.3° | 0 | METAR KIAD 220152Z 00000KT 10SM CLR 10/03 A3013 RMK AO2 SLP203 T01000033 $ |
| 2026-10-21 22:52 EDT | METAR | 8.9° | 3.3° | 0 | METAR KIAD 220252Z 00000KT 10SM CLR 09/03 A3013 RMK AO2 SLP203 T00890033 56003 $ |
| 2026-10-21 23:52 EDT | METAR | 7.8° | 3.3° | 0 | METAR KIAD 220352Z 00000KT 10SM CLR 08/03 A3012 RMK AO2 SLP199 T00780033 $ |
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/2026-10-21 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.
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.
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.
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).