Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-30 · 2026-11-01 → · All dates for KIAD · JSON
METAR KIAD 311952Z 34006KT 10SM FEW120 BKN210 BKN250 16/03 A3045 RMK AO2 SLP311 T01610028 $
METAR KIAD 311052Z 00000KT 10SM FEW250 04/03 A3044 RMK AO2 SLP307 T00440028 $
Local day 2026-10-31 00:00 EDT → 2026-11-01 00:00 EDT (24 h, UTC-04:00) · 24 reports · longest gap 60 min
High 62°F (16.67°C) · Low 39°F (3.89°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 2026-11-01 02:00 EST · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 4f0c50c725bf9cb294c49b500df5358d4a1d710c6a32b93e212524a114ce8607
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 |
|---|---|---|---|---|---|
| 2026-10-31 00:52 EDT | METAR | 12.2° | 3.3° | 2.6 | METAR KIAD 310452Z 33005KT 10SM FEW250 12/03 A3034 RMK AO2 SLP273 T01220033 402440100 |
| 2026-10-31 01:52 EDT | METAR | 12.2° | 3.9° | 2.6 | METAR KIAD 310552Z 34005KT 10SM FEW250 12/04 A3036 RMK AO2 SLP278 T01220039 10178 20122 51012 |
| 2026-10-31 02:52 EDT | METAR | 7.8° | 3.9° | 0 | METAR KIAD 310652Z 00000KT 10SM CLR 08/04 A3038 RMK AO2 SLP288 T00780039 |
| 2026-10-31 03:52 EDT | METAR | 6.7° | 3.9° | 0 | METAR KIAD 310752Z 00000KT 10SM CLR 07/04 A3039 RMK AO2 SLP292 T00670039 $ |
| 2026-10-31 04:52 EDT | METAR | 6.1° | 3.3° | 0 | METAR KIAD 310852Z 00000KT 10SM CLR 06/03 A3041 RMK AO2 SLP296 T00610033 51017 $ |
| 2026-10-31 05:52 EDT | METAR | 5° | 3.3° | 0 | METAR KIAD 310952Z 00000KT 10SM FEW250 05/03 A3042 RMK AO2 SLP300 T00500033 $ |
| 2026-10-31 06:52 EDT | METAR | 4.4°min | 2.8° | 0 | METAR KIAD 311052Z 00000KT 10SM FEW250 04/03 A3044 RMK AO2 SLP307 T00440028 $ |
| 2026-10-31 07:52 EDT | METAR | 4.4° | 2.8° | 0 | METAR KIAD 311152Z 00000KT 10SM FEW050 FEW250 04/03 A3046 RMK AO2 SLP314 T00440028 10117 20039 53017 $ |
| 2026-10-31 08:52 EDT | METAR | 8.3° | 5.6° | 0 | METAR KIAD 311252Z 00000KT 10SM FEW050 SCT250 08/06 A3048 RMK AO2 SLP322 T00830056 $ |
| 2026-10-31 09:52 EDT | METAR | 11.7° | 5° | 2.6 | METAR KIAD 311352Z 33005KT 10SM SCT250 12/05 A3050 RMK AO2 SLP327 T01170050 $ |
| 2026-10-31 10:52 EDT | METAR | 13.9° | 3.9° | 3.6 | METAR KIAD 311452Z 01007KT 10SM BKN250 14/04 A3049 RMK AO2 SLP325 T01390039 50012 $ |
| 2026-10-31 11:52 EDT | METAR | 13.9° | 3.9° | 2.1 | METAR KIAD 311552Z 01004KT 10SM BKN250 14/04 A3050 RMK AO2 SLP327 T01390039 $ |
| 2026-10-31 12:52 EDT | METAR | 15° | 4.4° | 2.6 | METAR KIAD 311652Z 04005KT 10SM BKN250 15/04 A3048 RMK AO2 SLP322 T01500044 $ |
| 2026-10-31 13:52 EDT | METAR | 15.6° | 4.4° | 2.6 | METAR KIAD 311752Z VRB05KT 10SM SCT210 BKN250 16/04 A3046 RMK AO2 SLP315 T01560044 10156 20044 58010 $ |
| 2026-10-31 14:52 EDT | METAR | 15.6° | 2.8° | 0 | METAR KIAD 311852Z 00000KT 10SM BKN250 16/03 A3045 RMK AO2 SLP311 T01560028 $ |
| 2026-10-31 15:52 EDT | METAR | 16.1°max | 2.8° | 3.1 | METAR KIAD 311952Z 34006KT 10SM FEW120 BKN210 BKN250 16/03 A3045 RMK AO2 SLP311 T01610028 $ |
| 2026-10-31 16:52 EDT | METAR | 16.1° | 3.3° | 3.1 | METAR KIAD 312052Z 30006KT 10SM FEW120 BKN210 BKN250 16/03 A3045 RMK AO2 SLP313 T01610033 55003 $ |
| 2026-10-31 17:52 EDT | METAR | 15° | 2.8° | 1.5 | METAR KIAD 312152Z 31003KT 10SM FEW120 BKN210 BKN250 15/03 A3046 RMK AO2 SLP314 T01500028 $ |
| 2026-10-31 18:52 EDT | METAR | 10.6° | 5° | 0 | METAR KIAD 312252Z 00000KT 10SM BKN210 BKN250 11/05 A3047 RMK AO2 SLP321 T01060050 $ |
| 2026-10-31 19:52 EDT | METAR | 10° | 5.6° | 0 | METAR KIAD 312352Z 00000KT 10SM BKN180 BKN250 10/06 A3048 RMK AO2 SLP323 T01000056 10167 20100 53009 $ |
| 2026-10-31 20:52 EDT | METAR | 10° | 5.6° | 0 | METAR KIAD 010052Z 00000KT 10SM FEW100 BKN180 OVC250 10/06 A3049 RMK AO2 SLP324 T01000056 $ |
| 2026-10-31 21:52 EDT | METAR | 10° | 6.1° | 0 | METAR KIAD 010152Z 00000KT 10SM FEW100 BKN180 OVC250 10/06 A3049 RMK AO2 SLP327 T01000061 $ |
| 2026-10-31 22:52 EDT | METAR | 10° | 6.7° | 0 | METAR KIAD 010252Z 00000KT 10SM FEW100 BKN160 OVC250 10/07 A3050 RMK AO2 SLP329 T01000067 53007 $ |
| 2026-10-31 23:52 EDT | METAR | 10° | 6.1° | 0 | METAR KIAD 010352Z 00000KT 10SM BKN150 OVC250 10/06 A3050 RMK AO2 SLP327 T01000061 $ |
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/2026-10-31 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).