Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-19 · 2026-10-21 → · All dates for KIAD · JSON
METAR KIAD 201952Z 33010KT 10SM CLR 22/04 A3021 RMK AO2 SLP231 T02170044
METAR KIAD 200652Z 00000KT 10SM CLR 06/03 A3025 RMK AO2 SLP243 T00560033
Local day 2026-10-20 00:00 EDT → 2026-10-21 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 71°F (21.67°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 2026-10-21 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 7c0667e37cc402ddbe979b0edb96acaf8626c737aac9b95fd0e1a7093e08f06d
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 |
|---|---|---|---|---|---|
| 2026-10-20 00:52 EDT | METAR | 7.2° | 3.3° | 0 | METAR KIAD 200452Z 00000KT 10SM CLR 07/03 A3026 RMK AO2 SLP245 T00720033 402000022 |
| 2026-10-20 01:52 EDT | METAR | 7.2° | 2.8° | 1.5 | METAR KIAD 200552Z 31003KT 10SM CLR 07/03 A3025 RMK AO2 SLP243 T00720028 10144 20061 56004 |
| 2026-10-20 02:52 EDT | METAR | 5.6°min | 3.3° | 0 | METAR KIAD 200652Z 00000KT 10SM CLR 06/03 A3025 RMK AO2 SLP243 T00560033 |
| 2026-10-20 03:52 EDT | METAR | 7.2° | 2.2° | 1.5 | METAR KIAD 200752Z 31003KT 10SM CLR 07/02 A3024 RMK AO2 SLP239 T00720022 |
| 2026-10-20 04:52 EDT | METAR | 9.4° | 1.7° | 3.1 | METAR KIAD 200852Z 34006KT 10SM CLR 09/02 A3024 RMK AO2 SLP238 T00940017 56005 |
| 2026-10-20 05:52 EDT | METAR | 10° | 1.1° | 2.1 | METAR KIAD 200952Z 33004KT 10SM CLR 10/01 A3025 RMK AO2 SLP243 T01000011 |
| 2026-10-20 06:52 EDT | METAR | 9.4° | 1.1° | 2.6 | METAR KIAD 201052Z 34005KT 10SM CLR 09/01 A3026 RMK AO2 SLP247 T00940011 |
| 2026-10-20 07:52 EDT | METAR | 9.4° | 1.1° | 3.1 | METAR KIAD 201152Z 33006KT 10SM FEW040 09/01 A3027 RMK AO2 SLP252 T00940011 10100 20056 51013 |
| 2026-10-20 08:52 EDT | METAR | 11.1° | 2.2° | 3.6 | METAR KIAD 201252Z 33007KT 10SM FEW040 11/02 A3029 RMK AO2 SLP256 T01110022 |
| 2026-10-20 09:52 EDT | METAR | 15° | 3.3° | 4.1 | METAR KIAD 201352Z 34008KT 10SM CLR 15/03 A3030 RMK AO2 SLP259 T01500033 |
| 2026-10-20 10:52 EDT | METAR | 17.2° | 3.9° | 6.2 | METAR KIAD 201452Z 01012G17KT 10SM CLR 17/04 A3029 RMK AO2 SLP255 T01720039 50004 |
| 2026-10-20 11:52 EDT | METAR | 18.3° | 4.4° | 5.1 | METAR KIAD 201552Z 36010G18KT 10SM CLR 18/04 A3028 RMK AO2 SLP253 T01830044 |
| 2026-10-20 12:52 EDT | METAR | 19.4° | 5° | 3.6 | METAR KIAD 201652Z 34007G16KT 10SM CLR 19/05 A3026 RMK AO2 SLP247 T01940050 |
| 2026-10-20 13:52 EDT | METAR | 20.6° | 4.4° | 5.7 | METAR KIAD 201752Z 34011KT 8SM CLR 21/04 A3024 RMK AO2 SLP240 T02060044 10206 20094 58014 |
| 2026-10-20 14:52 EDT | METAR | 21.1° | 3.9° | 5.1 | METAR KIAD 201852Z 35010KT 10SM CLR 21/04 A3022 RMK AO2 SLP233 T02110039 |
| 2026-10-20 15:52 EDT | METAR | 21.7°max | 4.4° | 5.1 | METAR KIAD 201952Z 33010KT 10SM CLR 22/04 A3021 RMK AO2 SLP231 T02170044 |
| 2026-10-20 16:52 EDT | METAR | 21.1° | 5° | 6.2 | METAR KIAD 202052Z 01012G19KT 10SM CLR 21/05 A3021 RMK AO2 SLP229 T02110050 56011 |
| 2026-10-20 17:52 EDT | METAR | 20° | 4.4° | 4.6 | METAR KIAD 202152Z 01009KT 10SM CLR 20/04 A3022 RMK AO2 SLP232 T02000044 |
| 2026-10-20 18:52 EDT | METAR | 18.3° | 5° | 4.1 | METAR KIAD 202252Z 02008KT 10SM CLR 18/05 A3023 RMK AO2 SLP237 T01830050 |
| 2026-10-20 19:52 EDT | METAR | 17.8° | 4.4° | 4.1 | METAR KIAD 202352Z 02008KT 10SM CLR 18/04 A3024 RMK AO2 SLP238 T01780044 10217 20172 51009 |
| 2026-10-20 20:52 EDT | METAR | 16.1° | 4.4° | 2.1 | METAR KIAD 210052Z 01004KT 10SM CLR 16/04 A3024 RMK AO2 SLP239 T01610044 |
| 2026-10-20 21:52 EDT | METAR | 13.9° | 5° | 1.5 | METAR KIAD 210152Z 32003KT 10SM CLR 14/05 A3024 RMK AO2 SLP239 T01390050 |
| 2026-10-20 22:52 EDT | METAR | 8.9° | 5.6° | 0 | METAR KIAD 210252Z 00000KT 10SM CLR 09/06 A3024 RMK AO2 SLP241 T00890056 53002 |
| 2026-10-20 23:52 EDT | METAR | 11.1° | 4.4° | 2.1 | METAR KIAD 210352Z 33004KT 10SM CLR 11/04 A3024 RMK AO2 SLP239 T01110044 $ |
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/2026-10-20 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).