Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-17 · 2026-10-19 → · All dates for KIAD · JSON
METAR KIAD 182052Z 36006KT 10SM CLR 17/M04 A3054 RMK AO2 SLP343 T01671039 56014 $
METAR KIAD 181052Z 00000KT 10SM CLR 03/M01 A3054 RMK AO2 SLP344 T00281006 $
Local day 2026-10-18 00:00 EDT → 2026-10-19 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 62°F (16.67°C) · Low 37°F (2.78°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 2026-10-19 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 de481f592b97b8ab7e14b7ccd4009f7e08d8f9304cff604d163afa9eadec9880
Transaction 0x0979db42477d6b5889c9056db8604e20986724061f63977cbf2f27725122e23c · 2026-10-19 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 |
|---|---|---|---|---|---|
| 2026-10-18 00:52 EDT | METAR | 6.7° | 0° | 2.1 | METAR KIAD 180452Z 34004KT 10SM CLR 07/00 A3046 RMK AO2 SLP315 T00670000 401610067 $ |
| 2026-10-18 01:52 EDT | METAR | 5.6° | 0.6° | 1.5 | METAR KIAD 180552Z 32003KT 10SM CLR 06/01 A3047 RMK AO2 SLP319 T00560006 10111 20050 53009 $ |
| 2026-10-18 02:52 EDT | METAR | 5° | 1.1° | 2.1 | METAR KIAD 180652Z 02004KT 10SM CLR 05/01 A3049 RMK AO2 SLP324 T00500011 $ |
| 2026-10-18 03:52 EDT | METAR | 6.7° | -0.6° | 4.1 | METAR KIAD 180752Z 35008KT 10SM CLR 07/M01 A3049 RMK AO2 SLP326 T00671006 $ |
| 2026-10-18 04:52 EDT | METAR | 6.7° | -1.1° | 4.1 | METAR KIAD 180852Z 34008KT 10SM CLR 07/M01 A3050 RMK AO2 SLP328 T00671011 51009 $ |
| 2026-10-18 05:52 EDT | METAR | 5° | -0.6° | 2.1 | METAR KIAD 180952Z 33004KT 10SM CLR 05/M01 A3052 RMK AO2 SLP335 T00501006 $ |
| 2026-10-18 06:52 EDT | METAR | 2.8°min | -0.6° | 0 | METAR KIAD 181052Z 00000KT 10SM CLR 03/M01 A3054 RMK AO2 SLP344 T00281006 $ |
| 2026-10-18 07:52 EDT | METAR | 5.6° | -1.1° | 2.6 | METAR KIAD 181152Z 03005KT 10SM CLR 06/M01 A3057 RMK AO2 SLP352 T00561011 10067 20028 53022 $ |
| 2026-10-18 08:52 EDT | METAR | 8.3° | -2.2° | 3.1 | METAR KIAD 181252Z 03006KT 10SM CLR 08/M02 A3060 RMK AO2 SLP362 T00831022 $ |
| 2026-10-18 09:52 EDT | METAR | 9.4° | -2.2° | 4.6 | METAR KIAD 181352Z 02009KT 10SM CLR 09/M02 A3061 RMK AO2 SLP367 T00941022 $ |
| 2026-10-18 10:52 EDT | METAR | 11.1° | -1.7° | 3.6 | METAR KIAD 181452Z 05007KT 10SM CLR 11/M02 A3062 RMK AO2 SLP369 T01111017 51018 $ |
| 2026-10-18 11:52 EDT | METAR | 12.8° | -1.7° | 2.6 | METAR KIAD 181552Z 05005KT 10SM CLR 13/M02 A3063 RMK AO2 SLP371 T01281017 $ |
| 2026-10-18 12:52 EDT | METAR | 14.4° | -4.4° | 2.6 | METAR KIAD 181652Z VRB05KT 10SM CLR 14/M04 A3061 RMK AO2 SLP364 T01441044 $ |
| 2026-10-18 13:52 EDT | METAR | 15° | -4.4° | 2.6 | METAR KIAD 181752Z VRB05KT 10SM CLR 15/M04 A3058 RMK AO2 SLP357 T01501044 10156 20056 58012 $ |
| 2026-10-18 14:52 EDT | METAR | 15.6° | -3.9° | 2.6 | METAR KIAD 181852Z VRB05KT 10SM CLR 16/M04 A3056 RMK AO2 SLP350 T01561039 $ |
| 2026-10-18 15:52 EDT | METAR | 16.1° | -5° | 2.1 | METAR KIAD 181952Z VRB04KT 10SM CLR 16/M05 A3055 RMK AO2 SLP346 T01611050 $ |
| 2026-10-18 16:52 EDT | METAR | 16.7°max | -3.9° | 3.1 | METAR KIAD 182052Z 36006KT 10SM CLR 17/M04 A3054 RMK AO2 SLP343 T01671039 56014 $ |
| 2026-10-18 17:52 EDT | METAR | 15.6° | -2.8° | 2.1 | METAR KIAD 182152Z 34004KT 10SM CLR 16/M03 A3053 RMK AO2 SLP340 T01561028 $ |
| 2026-10-18 18:52 EDT | METAR | 13.3° | -0.6° | 2.6 | METAR KIAD 182252Z 33005KT 10SM CLR 13/M01 A3053 RMK AO2 SLP340 T01331006 $ |
| 2026-10-18 19:52 EDT | METAR | 8.9° | 2.2° | 0 | METAR KIAD 182352Z 00000KT 10SM CLR 09/02 A3053 RMK AO2 SLP341 T00890022 10167 20089 55003 $ |
| 2026-10-18 20:52 EDT | METAR | 6.7° | 3.3° | 0 | METAR KIAD 190052Z 00000KT 10SM CLR 07/03 A3053 RMK AO2 SLP340 T00670033 $ |
| 2026-10-18 21:52 EDT | METAR | 5.6° | 2.8° | 0 | METAR KIAD 190152Z 00000KT 10SM CLR 06/03 A3052 RMK AO2 SLP338 T00560028 $ |
| 2026-10-18 22:52 EDT | METAR | 5.6° | 2.8° | 0 | METAR KIAD 190252Z 00000KT 10SM CLR 06/03 A3053 RMK AO2 SLP338 T00560028 55003 $ |
| 2026-10-18 23:52 EDT | METAR | 5° | 2.2° | 1.5 | METAR KIAD 190352Z 29003KT 10SM CLR 05/02 A3053 RMK AO2 SLP338 T00500022 $ |
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/2026-10-18 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).