Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-09-30 · 2026-10-02 → · All dates for KIAD · JSON
METAR KIAD 011852Z 00000KT 10SM FEW050 FEW130 SCT250 29/15 A3005 RMK AO2 SLP172 T02940150
METAR KIAD 011052Z 00000KT 10SM SCT070 17/16 A3009 RMK AO2 SLP187 T01670161
Local day 2026-10-01 00:00 EDT → 2026-10-02 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 86°F (30°C) · Low 61°F (16.11°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 2026-10-02 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
1 report(s) in this day were re-issued after first publication; the original text is shown struck through in the table.
SHA-256 2027ce7bb259bca8a795116ad7dabca04dc666c1ab7d2fa593c9a49171077fdb
Transaction 0xb81eff7e4c7551217415d40d39a812a39205dd9acafbeddcb3d5deeab63ffa25 · 2026-10-02 03:01 EDT
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 |
|---|---|---|---|---|---|
| 2026-10-01 00:52 EDT | METAR | 18.9° | 17.8° | 3.1 | METAR KIAD 010452Z 18006KT 10SM OVC250 19/18 A3010 RMK AO2 SLP190 T01890178 402720133 |
| 2026-10-01 01:52 EDT | METAR | 18.3° | 17.2° | 2.6 | METAR KIAD 010552Z 17005KT 10SM BKN250 18/17 A3009 RMK AO2 SLP186 T01830172 10206 20178 58004 |
| 2026-10-01 02:52 EDT | METAR | 18.9° | 17.2° | 3.1 | METAR KIAD 010652Z 18006KT 10SM BKN250 19/17 A3008 RMK AO2 SLP184 T01890172 |
| 2026-10-01 03:52 EDT | METAR | 17.8° | 16.7° | 2.1 | METAR KIAD 010752Z 19004KT 10SM SCT250 18/17 A3008 RMK AO2 SLP182 T01780167 |
| 2026-10-01 04:52 EDT | METAR | 17.8° | 16.7° | 2.1 | METAR KIAD 010852Z 19004KT 10SM BKN200 18/17 A3007 RMK AO2 SLP181 T01780167 56005 |
| 2026-10-01 05:52 EDT | METAR | 17.2° | 16.7° | 0 | METAR KIAD 010952Z 00000KT 8SM CLR 17/17 A3009 RMK AO2 SLP186 T01720167 |
| 2026-10-01 06:52 EDT | METAR | 16.7°min | 16.1° | 0 | METAR KIAD 011052Z 00000KT 10SM SCT070 17/16 A3009 RMK AO2 SLP187 T01670161 |
| 2026-10-01 07:52 EDT | METAR | 17.2° | 16.7° | 1.5 | METAR KIAD 011152Z 17003KT 10SM BKN140 BKN250 17/17 A3010 RMK AO2 SLP191 T01720167 10189 20161 51008 |
| 2026-10-01 08:52 EDT | METAR | 18.9° | 17.2° | 2.1 | METAR KIAD 011252Z 19004KT 10SM BKN140 BKN250 19/17 A3011 RMK AO2 SLP193 T01890172 |
| 2026-10-01 09:52 EDT | METAR | 21.1° | 17.2° | 2.6 | METAR KIAD 011352Z 22005KT 10SM SCT150 BKN250 21/17 A3011 RMK AO2 SLP195 T02110172 |
| 2026-10-01 10:52 EDT | METAR | 22.2° | 17.2° | 2.1 | METAR KIAD 011452Z 22004KT 10SM SCT160 BKN250 22/17 A3011 RMK AO2 SLP195 T02220172 51004 |
| 2026-10-01 11:52 EDT | METAR | 25.6° | 18.9° | 0 | METAR KIAD 011552Z COR 00000KT 10SM FEW250 26/19 A3010 RMK AO2 SLP190 T02560189 original: METAR KIAD 011552Z 00000KT 10SM CLR 26/19 A3010 RMK AO2 SLP190 T02560189 |
| 2026-10-01 12:52 EDT | METAR | 27.8° | 17.2° | 1.5 | METAR KIAD 011652Z VRB03KT 10SM FEW045 FEW250 28/17 A3009 RMK AO2 SLP185 T02780172 |
| 2026-10-01 13:52 EDT | METAR | 28.9° | 16.1° | 2.6 | METAR KIAD 011752Z VRB05KT 10SM FEW045 FEW250 29/16 A3006 RMK AO2 SLP176 T02890161 10289 20172 58017 |
| 2026-10-01 14:52 EDT | METAR | 29.4°max | 15° | 0 | METAR KIAD 011852Z 00000KT 10SM FEW050 FEW130 SCT250 29/15 A3005 RMK AO2 SLP172 T02940150 |
| 2026-10-01 15:52 EDT | METAR | 29.4° | 16.1° | 1.5 | METAR KIAD 011952Z 22003KT 10SM FEW050 FEW250 29/16 A3004 RMK AO2 SLP170 T02940161 |
| 2026-10-01 16:52 EDT | METAR | 29.4° | 15.6° | 2.6 | METAR KIAD 012052Z 19005KT 10SM FEW150 29/16 A3003 RMK AO2 SLP166 T02940156 56010 |
| 2026-10-01 17:52 EDT | METAR | 28.3° | 16.1° | 2.6 | METAR KIAD 012152Z 19005KT 10SM FEW150 FEW250 28/16 A3003 RMK AO2 SLP166 T02830161 |
| 2026-10-01 18:52 EDT | METAR | 26.1° | 16.1° | 2.6 | METAR KIAD 012252Z 19005KT 10SM FEW150 SCT250 26/16 A3004 RMK AO2 SLP169 T02610161 |
| 2026-10-01 19:52 EDT | METAR | 25° | 16.7° | 3.1 | METAR KIAD 012352Z 17006KT 10SM FEW150 BKN250 25/17 A3004 RMK AO2 SLP172 T02500167 10300 20244 53004 |
| 2026-10-01 20:52 EDT | METAR | 24.4° | 16.7° | 3.1 | METAR KIAD 020052Z 18006KT 10SM FEW150 SCT250 24/17 A3005 RMK AO2 SLP172 T02440167 |
| 2026-10-01 21:52 EDT | METAR | 22.8° | 17.2° | 3.1 | METAR KIAD 020152Z 20006KT 10SM FEW150 23/17 A3004 RMK AO2 SLP170 T02280172 |
| 2026-10-01 22:52 EDT | METAR | 21.1° | 16.7° | 2.6 | METAR KIAD 020252Z 20005KT 10SM FEW150 21/17 A3004 RMK AO2 SLP168 T02110167 58002 |
| 2026-10-01 23:52 EDT | METAR | 21.1° | 16.7° | 3.1 | METAR KIAD 020352Z 18006KT 10SM FEW150 21/17 A3003 RMK AO2 SLP165 T02110167 |
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/2026-10-01 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).