Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-28 · 2026-10-30 → · All dates for KIAD · JSON
METAR KIAD 291952Z 00000KT 10SM FEW030 23/11 A3016 RMK AO2 SLP213 T02280111
METAR KIAD 290452Z 00000KT 10SM SCT032 SCT120 10/09 A3033 RMK AO2 SLP269 T01000089 401940072
Local day 2026-10-29 00:00 EDT → 2026-10-30 00:00 EDT (24 h, UTC-04:00) · 25 reports · longest gap 60 min
High 73°F (22.78°C) · Low 50°F (10°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 2026-10-30 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 9196baa85193b124c73db7435375d450cd999406cbeb23153c45aaf39c1aa110
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 25 · 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 |
|---|---|---|---|---|---|
| 2026-10-29 00:52 EDT | METAR | 10°min | 8.9° | 0 | METAR KIAD 290452Z 00000KT 10SM SCT032 SCT120 10/09 A3033 RMK AO2 SLP269 T01000089 401940072 |
| 2026-10-29 01:52 EDT | METAR | 11.7° | 9.4° | 0 | METAR KIAD 290552Z 00000KT 10SM BKN029 12/09 A3032 RMK AO2 SLP266 T01170094 10150 20094 58006 |
| 2026-10-29 02:52 EDT | METAR | 11.7° | 9.4° | 0 | METAR KIAD 290652Z 00000KT 10SM OVC029 12/09 A3031 RMK AO2 SLP264 T01170094 |
| 2026-10-29 03:52 EDT | METAR | 12.2° | 10° | 0 | METAR KIAD 290752Z 00000KT 10SM OVC028 12/10 A3030 RMK AO2 SLP260 T01220100 |
| 2026-10-29 04:52 EDT | METAR | 12.8° | 11.1° | 1.5 | METAR KIAD 290852Z 17003KT 10SM OVC029 13/11 A3029 RMK AO2 SLP255 T01280111 58010 |
| 2026-10-29 04:59 EDT | SPECI | 12.8° | 11.1° | 1.5 | SPECI KIAD 290859Z 18003KT 10SM OVC031 13/11 A3029 RMK AO2 T01280111 |
| 2026-10-29 05:52 EDT | METAR | 12.8° | 11.1° | 1.5 | METAR KIAD 290952Z 16003KT 10SM OVC032 13/11 A3029 RMK AO2 SLP255 T01280111 |
| 2026-10-29 06:52 EDT | METAR | 11.1° | 11.1° | 0 | METAR KIAD 291052Z 00000KT 10SM SCT032 11/11 A3029 RMK AO2 SLP256 T01110111 |
| 2026-10-29 07:52 EDT | METAR | 10° | 10° | 0 | METAR KIAD 291152Z 00000KT 7SM FEW033 10/10 A3029 RMK AO2 SLP256 T01000100 10128 20100 53001 |
| 2026-10-29 08:52 EDT | METAR | 13.3° | 12.2° | 0 | METAR KIAD 291252Z 00000KT 9SM CLR 13/12 A3030 RMK AO2 SLP260 T01330122 |
| 2026-10-29 09:52 EDT | METAR | 15° | 12.8° | 2.1 | METAR KIAD 291352Z 18004KT 10SM FEW250 15/13 A3030 RMK AO2 SLP260 T01500128 |
| 2026-10-29 10:52 EDT | METAR | 17.2° | 12.8° | 2.1 | METAR KIAD 291452Z VRB04KT 10SM FEW033 17/13 A3029 RMK AO2 SLP255 T01720128 58001 |
| 2026-10-29 11:52 EDT | METAR | 19.4° | 12.8° | 3.6 | METAR KIAD 291552Z 18007KT 10SM FEW033 19/13 A3026 RMK AO2 SLP247 T01940128 |
| 2026-10-29 12:52 EDT | METAR | 20.6° | 12.8° | 3.6 | METAR KIAD 291652Z 21007KT 10SM FEW028 21/13 A3024 RMK AO2 SLP239 T02060128 |
| 2026-10-29 13:52 EDT | METAR | 21.1° | 12.2° | 1.5 | METAR KIAD 291752Z VRB03KT 10SM FEW028 21/12 A3021 RMK AO2 SLP230 T02110122 10217 20100 58024 |
| 2026-10-29 14:52 EDT | METAR | 21.7° | 11.7° | 0 | METAR KIAD 291852Z 00000KT 10SM FEW030 22/12 A3018 RMK AO2 SLP219 T02170117 |
| 2026-10-29 15:52 EDT | METAR | 22.8°max | 11.1° | 0 | METAR KIAD 291952Z 00000KT 10SM FEW030 23/11 A3016 RMK AO2 SLP213 T02280111 |
| 2026-10-29 16:52 EDT | METAR | 22.8° | 11.7° | 1.5 | METAR KIAD 292052Z 22003KT 10SM CLR 23/12 A3015 RMK AO2 SLP209 T02280117 56020 |
| 2026-10-29 17:52 EDT | METAR | 20° | 11.7° | 1.5 | METAR KIAD 292152Z 21003KT 10SM CLR 20/12 A3014 RMK AO2 SLP207 T02000117 |
| 2026-10-29 18:52 EDT | METAR | 18.3° | 11.7° | 2.6 | METAR KIAD 292252Z 16005KT 10SM CLR 18/12 A3014 RMK AO2 SLP205 T01830117 |
| 2026-10-29 19:52 EDT | METAR | 16.1° | 12.2° | 2.1 | METAR KIAD 292352Z 16004KT 10SM CLR 16/12 A3015 RMK AO2 SLP208 T01610122 10228 20161 55002 |
| 2026-10-29 20:52 EDT | METAR | 16.1° | 12.2° | 2.6 | METAR KIAD 300052Z 17005KT 10SM CLR 16/12 A3014 RMK AO2 SLP207 T01610122 |
| 2026-10-29 21:52 EDT | METAR | 15° | 12.2° | 2.1 | METAR KIAD 300152Z 18004KT 10SM CLR 15/12 A3013 RMK AO2 SLP204 T01500122 |
| 2026-10-29 22:52 EDT | METAR | 14.4° | 11.7° | 1.5 | METAR KIAD 300252Z 19003KT 10SM CLR 14/12 A3013 RMK AO2 SLP203 T01440117 56004 |
| 2026-10-29 23:52 EDT | METAR | 12.2° | 11.1° | 0 | METAR KIAD 300352Z 00000KT 10SM CLR 12/11 A3013 RMK AO2 SLP202 T01220111 |
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/2026-10-29 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).