Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-18 · 2026-10-20 → · All dates for KIAD · JSON
METAR KIAD 191952Z 35010KT 10SM CLR 19/01 A3034 RMK AO2 SLP273 T01940011
METAR KIAD 190952Z 00000KT 10SM CLR 03/02 A3048 RMK AO2 SLP321 T00280017 $
Local day 2026-10-19 00:00 EDT → 2026-10-20 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 68°F (20°C) · Low 36°F (2.22°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 2026-10-20 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 d2d7f416e04ea710da3409f24501312974c76155148d87ab05c095fd978b8fce
Transaction 0x5dadd198ab02b1208dd3cedbddcce22c8add2ebc9a96a8f820058fbc7ac6763d · 2026-10-20 03:02 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 |
|---|---|---|---|---|---|
| 2026-10-19 00:52 EDT | METAR | 3.9° | 2.8° | 0 | METAR KIAD 190452Z 00000KT 10SM CLR 04/03 A3051 RMK AO2 SLP332 T00390028 401670028 $ |
| 2026-10-19 01:52 EDT | METAR | 3.3° | 2.2° | 1.5 | METAR KIAD 190552Z 29003KT 10SM CLR 03/02 A3050 RMK AO2 SLP329 T00330022 10089 20033 58008 $ |
| 2026-10-19 02:52 EDT | METAR | 3.9° | 2.2° | 1.5 | METAR KIAD 190652Z 33003KT 10SM CLR 04/02 A3049 RMK AO2 SLP326 T00390022 $ |
| 2026-10-19 03:52 EDT | METAR | 4.4° | 1.7° | 1.5 | METAR KIAD 190752Z 31003KT 10SM CLR 04/02 A3048 RMK AO2 SLP323 T00440017 $ |
| 2026-10-19 04:52 EDT | METAR | 4.4° | 1.7° | 2.1 | METAR KIAD 190852Z 33004KT 10SM CLR 04/02 A3048 RMK AO2 SLP322 T00440017 56007 $ |
| 2026-10-19 05:52 EDT | METAR | 2.8°min | 1.7° | 0 | METAR KIAD 190952Z 00000KT 10SM CLR 03/02 A3048 RMK AO2 SLP321 T00280017 $ |
| 2026-10-19 06:52 EDT | METAR | 3.9° | 1.7° | 2.6 | METAR KIAD 191052Z 31005KT 10SM CLR 04/02 A3047 RMK AO2 SLP319 T00390017 $ |
| 2026-10-19 07:52 EDT | METAR | 4.4° | 1.7° | 2.6 | METAR KIAD 191152Z 32005KT 10SM CLR 04/02 A3047 RMK AO2 SLP321 T00440017 10050 20022 55002 $ |
| 2026-10-19 08:52 EDT | METAR | 7.2° | 2.8° | 2.6 | METAR KIAD 191252Z 32005KT 10SM CLR 07/03 A3048 RMK AO2 SLP323 T00720028 $ |
| 2026-10-19 09:52 EDT | METAR | 10° | 2.2° | 2.6 | METAR KIAD 191352Z 32005KT 10SM CLR 10/02 A3049 RMK AO2 SLP325 T01000022 $ |
| 2026-10-19 10:52 EDT | METAR | 13.3° | 2.8° | 3.6 | METAR KIAD 191452Z 33007KT 10SM CLR 13/03 A3047 RMK AO2 SLP318 T01330028 58001 |
| 2026-10-19 11:52 EDT | METAR | 16.1° | 1.7° | 3.6 | METAR KIAD 191552Z 35007KT 10SM CLR 16/02 A3044 RMK AO2 SLP309 T01610017 |
| 2026-10-19 12:52 EDT | METAR | 17.2° | 0.6° | 5.1 | METAR KIAD 191652Z 35010KT 10SM CLR 17/01 A3041 RMK AO2 SLP299 T01720006 |
| 2026-10-19 13:52 EDT | METAR | 18.3° | 1.1° | 4.1 | METAR KIAD 191752Z 35008KT 10SM CLR 18/01 A3038 RMK AO2 SLP287 T01830011 10183 20044 58031 |
| 2026-10-19 14:52 EDT | METAR | 18.9° | 0.6° | 3.6 | METAR KIAD 191852Z 34007KT 310V020 10SM CLR 19/01 A3035 RMK AO2 SLP277 T01890006 |
| 2026-10-19 15:52 EDT | METAR | 19.4°max | 1.1° | 5.1 | METAR KIAD 191952Z 35010KT 10SM CLR 19/01 A3034 RMK AO2 SLP273 T01940011 |
| 2026-10-19 16:52 EDT | METAR | 19.4° | 0.6° | 4.1 | METAR KIAD 192052Z 36008KT 10SM CLR 19/01 A3032 RMK AO2 SLP266 T01940006 56021 |
| 2026-10-19 17:52 EDT | METAR | 18.3° | 3.3° | 4.1 | METAR KIAD 192152Z 32008KT 10SM CLR 18/03 A3030 RMK AO2 SLP262 T01830033 |
| 2026-10-19 18:52 EDT | METAR | 16.1° | 3.9° | 2.1 | METAR KIAD 192252Z 33004KT 10SM CLR 16/04 A3030 RMK AO2 SLP259 T01610039 |
| 2026-10-19 19:52 EDT | METAR | 14.4° | 4.4° | 2.1 | METAR KIAD 192352Z 33004KT 10SM CLR 14/04 A3029 RMK AO2 SLP257 T01440044 10200 20144 56009 |
| 2026-10-19 20:52 EDT | METAR | 13.3° | 3.9° | 2.1 | METAR KIAD 200052Z 33004KT 10SM CLR 13/04 A3028 RMK AO2 SLP255 T01330039 |
| 2026-10-19 21:52 EDT | METAR | 12.2° | 3.3° | 2.1 | METAR KIAD 200152Z 32004KT 10SM CLR 12/03 A3027 RMK AO2 SLP251 T01220033 |
| 2026-10-19 22:52 EDT | METAR | 11.7° | 2.8° | 2.1 | METAR KIAD 200252Z 31004KT 10SM CLR 12/03 A3026 RMK AO2 SLP248 T01170028 56008 |
| 2026-10-19 23:52 EDT | METAR | 10.6° | 2.2° | 2.6 | METAR KIAD 200352Z 31005KT 10SM CLR 11/02 A3026 RMK AO2 SLP246 T01060022 |
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/2026-10-19 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).