Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-29 · 2026-10-31 → · All dates for KIAD · JSON
METAR KIAD 301752Z 30013G24KT 5SM BLDU FEW055 24/04 A3013 RMK AO2 PK WND 33026/1733 SLP199 T02390044 10244 20106 58001
METAR KIAD 300852Z 18004KT 10SM CLR 10/09 A3010 RMK AO2 SLP192 T01000094 58007
Local day 2026-10-30 00:00 EDT → 2026-10-31 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 76°F (24.44°C) · Low 50°F (10°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 2026-10-31 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 1c7e2100478769d8e1a1d6345b0146332bc92c8137dc8a973766bafced1fd013
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 23 · suspect 1 · 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 |
|---|---|---|---|---|---|
| 2026-10-30 00:52 EDT | METAR | 11.7° | 11.1° | 1.5 | METAR KIAD 300452Z 13003KT 10SM CLR 12/11 A3013 RMK AO2 SLP202 T01170111 402280100 |
| 2026-10-30 01:52 EDT | METAR | 12.2° | 11.1° | 0 | METAR KIAD 300552Z 00000KT 10SM CLR 12/11 A3012 RMK AO2 SLP199 T01220111 10172 20111 58004 |
| 2026-10-30 02:52 EDT | METAR | 10.6° | 10° | 0 | METAR KIAD 300652Z 00000KT 10SM CLR 11/10 A3012 RMK AO2 SLP197 T01060100 |
| 2026-10-30 03:52 EDT | METAR | 11.7° | 10.6° | 2.1 | METAR KIAD 300752Z 20004KT 10SM CLR 12/11 A3011 RMK AO2 SLP193 T01170106 |
| 2026-10-30 04:52 EDT | METAR | 10°min | 9.4° | 2.1 | METAR KIAD 300852Z 18004KT 10SM CLR 10/09 A3010 RMK AO2 SLP192 T01000094 58007 |
| 2026-10-30 05:52 EDT | METAR | 10.6° | 10° | 1.5 | METAR KIAD 300952Z 19003KT 9SM SCT080 11/10 A3011 RMK AO2 SLP194 T01060100 |
| 2026-10-30 06:52 EDT | METAR | 11.1° | 10.6° | 1.5 | METAR KIAD 301052Z 20003KT 10SM SCT110 11/11 A3011 RMK AO2 SLP197 T01110106 |
| 2026-10-30 07:52 EDT | METAR | 11.1° | 10° | 1.5 | METAR KIAD 301152Z 19003KT 9SM FEW110 11/10 A3012 RMK AO2 SLP199 T01110100 10122 20100 53007 |
| 2026-10-30 08:52 EDT | METAR | 13.9° | 11.7° | 1.5 | METAR KIAD 301252Z 21003KT 10SM FEW110 14/12 A3014 RMK AO2 SLP204 T01390117 |
| 2026-10-30 09:52 EDT | METAR | 20° | 11.7° | 2.6 | METAR KIAD 301352Z 30005KT 10SM CLR 20/12 A3014 RMK AO2 SLP204 T02000117 |
| 2026-10-30 10:52 EDT | METAR | 22.2° | 10.6° | 9.3 | METAR KIAD 301452Z 29018G27KT 6SM BLDU CLR 22/11 A3013 RMK AO2 PK WND 30028/1441 SLP200 T02220106 50002 |
| 2026-10-30 11:52 EDT | METAR | 22.2° | 9.4° | 6.7 | METAR KIAD 301552Z 31013G24KT 9SM FEW030 22/09 A3016 RMK AO2 PK WND 29027/1541 SLP210 T02220094 |
| 2026-10-30 12:52 EDT | METAR | 23.3° | 8.3° | 5.7 | METAR KIAD 301652Z 30011G19KT 8SM FEW055 23/08 A3014 RMK AO2 SLP206 T02330083 |
| 2026-10-30 13:52 EDT | METAR | 23.9°max | 4.4° | 6.7 | METAR KIAD 301752Z 30013G24KT 5SM BLDU FEW055 24/04 A3013 RMK AO2 PK WND 33026/1733 SLP199 T02390044 10244 20106 58001 |
| 2026-10-30 14:52 EDT | METAR | 23.9° | 4.4° | 5.1 | METAR KIAD 301852Z 31010G18KT 10SM FEW055 FEW250 24/04 A3012 RMK AO2 PK WND 34028/1805 SLP198 T02390044 |
| 2026-10-30 15:52 EDT | METAR | 23.9° | 1.7° | 5.7 | METAR KIAD 301952Z 30011G22KT 10SM FEW250 24/02 A3013 RMK AO2 SLP202 T02390017 |
| 2026-10-30 16:52 EDT | METAR | 22.8° | 3.3° | 6.2 | METAR KIAD 302052Z 35012KT 10SM FEW250 23/03 A3016 RMK AO2 SLP211 T02280033 53010 |
| 2026-10-30 17:52 EDT | METAR | 20.6° | 3.9° | 7.2 | METAR KIAD 302152Z 33014G20KT 10SM FEW050 21/04 A3018 RMK AO2 SLP220 T02060039 |
| 2026-10-30 18:52 EDT | METAR | 18.3° | 3.3° | 4.6 | METAR KIAD 302252Z 34009KT 10SM FEW050 FEW250 18/03 A3023 RMK AO2 SLP235 T01830033 |
| 2026-10-30 19:52 EDT | METAR | 17.8° | 2.8° | 6.2 | METAR KIAD 302352Z 34012KT 10SM FEW250 18/03 A3026 RMK AO2 SLP245 T01780028 10244 20178 51033 |
| 2026-10-30 20:52 EDT | METAR | 16.1° | 3.3° | 4.6 | METAR KIAD 310052Z 35009KT 10SM FEW250 16/03 A3028 RMK AO2 SLP253 T01610033 |
| 2026-10-30 21:52 EDT | METAR | 16.1° | 2.8° | 4.6 | METAR KIAD 310152Z 34009KT 10SM FEW250 16/03 A3030 RMK AO2 SLP260 T01610028 |
| 2026-10-30 22:52 EDT | METAR | 15° | 3.3° | 3.6 | METAR KIAD 310252Z 35007KT 10SM FEW250 15/03 A3032 RMK AO2 SLP266 T01500033 51022 |
| 2026-10-30 23:52 EDT | METAR | 13.9° | 3.3° | 3.1 | METAR KIAD 310352Z 34006KT 10SM FEW250 14/03 A3033 RMK AO2 SLP270 T01390033 |
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/2026-10-30 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).