Station-day record · settlement source
Washington D.C. · America/New_York · ← 2026-10-03 · 2026-10-05 → · All dates for KIAD · JSON
SPECI KIAD 041918Z 03004KT 7SM SCT006 BKN012 OVC018 18/16 A3011 RMK AO2 T01780161 $
METAR KIAD 040552Z 00000KT 5SM -RA BR BKN016 OVC024 16/14 A3023 RMK AO2 RAE10B28 SLP236 P0000 60000 T01560144 10161 20156 58009 $
Local day 2026-10-04 00:00 EDT → 2026-10-05 00:00 EDT (24 h, UTC-04:00) · 41 reports · longest gap 60 min
High 64°F (17.78°C) · Low 60°F (15.56°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 2026-10-05 03:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 5cf2a6302e965b9823d45954c9759a699b0cdc62fef33849ec60387e933bb30d
Transaction 0xd1d8135f065aace3f12626d8425249b64fbac4fa5bfbdc697ea2eaf26288475a · 2026-10-05 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 41 · 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 |
|---|---|---|---|---|---|
| 2026-10-04 00:52 EDT | METAR | 16.1° | 14.4° | 0 | METAR KIAD 040452Z 00000KT 10SM -RA OVC018 16/14 A3024 RMK AO2 RAB35 SLP240 P0000 T01610144 402000139 $ |
| 2026-10-04 01:52 EDT | METAR | 15.6°min | 14.4° | 0 | METAR KIAD 040552Z 00000KT 5SM -RA BR BKN016 OVC024 16/14 A3023 RMK AO2 RAE10B28 SLP236 P0000 60000 T01560144 10161 20156 58009 $ |
| 2026-10-04 02:17 EDT | SPECI | 15.6° | 14.4° | 0 | SPECI KIAD 040617Z 00000KT 4SM -RA BR OVC014 16/14 A3023 RMK AO2 P0001 T01560144 $ |
| 2026-10-04 02:52 EDT | METAR | 15.6° | 14.4° | 1.5 | METAR KIAD 040652Z 02003KT 5SM -RA BR OVC012 16/14 A3022 RMK AO2 SLP231 P0002 T01560144 $ |
| 2026-10-04 03:13 EDT | SPECI | 15.6° | 15° | 2.1 | SPECI KIAD 040713Z 01004KT 3SM -RA BR SCT008 OVC012 16/15 A3021 RMK AO2 P0001 T01560150 $ |
| 2026-10-04 03:23 EDT | SPECI | 15.6° | 15° | 2.1 | SPECI KIAD 040723Z 02004KT 3SM -RA BR BKN008 OVC012 16/15 A3021 RMK AO2 P0001 T01560150 $ |
| 2026-10-04 03:52 EDT | METAR | 15.6° | 15° | 1.5 | METAR KIAD 040752Z 02003KT 2 1/2SM -RA BR OVC007 16/15 A3020 RMK AO2 RAE32B52 SLP227 P0001 T01560150 $ |
| 2026-10-04 04:23 EDT | SPECI | 15.6° | 15° | 1.5 | SPECI KIAD 040823Z 04003KT 3SM -RA BR OVC005 16/15 A3021 RMK AO2 P0001 T01560150 $ |
| 2026-10-04 04:52 EDT | METAR | 15.6° | 15.6° | 0 | METAR KIAD 040852Z 00000KT 6SM BR SCT005 BKN010 OVC032 16/16 A3021 RMK AO2 RAE39 SLP227 P0002 60005 T01560156 55008 $ |
| 2026-10-04 05:09 EDT | SPECI | 15.6° | 15° | 3.1 | SPECI KIAD 040909Z 08006KT 7SM -RA BKN007 BKN012 OVC027 16/15 A3019 RMK AO2 RAB02 P0000 T01560150 $ |
| 2026-10-04 05:52 EDT | METAR | 15.6° | 15° | 2.6 | METAR KIAD 040952Z VRB05KT 10SM BKN010 OVC045 16/15 A3019 RMK AO2 RAB02E25 SLP224 P0000 T01560150 $ |
| 2026-10-04 06:27 EDT | SPECI | 16.1° | 15° | 2.6 | SPECI KIAD 041027Z VRB05KT 10SM BKN008 OVC012 16/15 A3019 RMK AO2 T01610150 $ |
| 2026-10-04 06:52 EDT | METAR | 16.1° | 15° | 4.1 | METAR KIAD 041052Z 07008KT 10SM BKN008 OVC012 16/15 A3019 RMK AO2 SLP222 T01610150 $ |
| 2026-10-04 07:52 EDT | METAR | 16.1° | 15° | 2.6 | METAR KIAD 041152Z 05005KT 10SM BKN008 BKN012 OVC026 16/15 A3020 RMK AO2 SLP226 60005 70009 T01610150 10161 20156 55001 $ |
| 2026-10-04 08:52 EDT | METAR | 15.6° | 15° | 2.6 | METAR KIAD 041252Z 07005KT 4SM -RA BR BKN008 OVC014 16/15 A3020 RMK AO2 RAB48 SLP227 P0000 T01560150 $ |
| 2026-10-04 09:09 EDT | SPECI | 15.6° | 15° | 2.6 | SPECI KIAD 041309Z 05005KT 2SM BR BKN009 BKN014 OVC024 16/15 A3020 RMK AO2 RAE07 P0001 T01560150 $ |
| 2026-10-04 09:52 EDT | METAR | 16.1° | 15° | 2.6 | METAR KIAD 041352Z 05005KT 3SM BR BKN008 OVC013 16/15 A3019 RMK AO2 RAE07 SLP223 P0001 T01610150 $ |
| 2026-10-04 10:52 EDT | METAR | 16.1° | 15.6° | 2.1 | METAR KIAD 041452Z 05004KT 1 3/4SM BR OVC006 16/16 A3019 RMK AO2 SLP222 60001 T01610156 58004 $ |
| 2026-10-04 11:05 EDT | SPECI | 16.1° | 15.6° | 2.6 | SPECI KIAD 041505Z 06005KT 3SM BR BKN006 OVC011 16/16 A3019 RMK AO2 T01610156 $ |
| 2026-10-04 11:52 EDT | METAR | 16.7° | 15.6° | 2.1 | METAR KIAD 041552Z 04004KT 3SM BR OVC008 17/16 A3018 RMK AO2 SLP219 T01670156 $ |
| 2026-10-04 12:52 EDT | METAR | 17.2° | 16.1° | 1.5 | METAR KIAD 041652Z 07003KT 2 1/2SM BR OVC007 17/16 A3015 RMK AO2 SLP210 T01720161 $ |
| 2026-10-04 13:26 EDT | SPECI | 17.2° | 16.1° | 2.6 | SPECI KIAD 041726Z VRB05KT 3SM BR BKN008 OVC012 17/16 A3015 RMK AO2 VIS 1 1/2V3 T01720161 $ |
| 2026-10-04 13:45 EDT | SPECI | 16.7° | 16.1° | 2.6 | SPECI KIAD 041745Z 03005KT 1 3/4SM -RA BR BKN006 OVC012 17/16 A3014 RMK AO2 RAB40 VIS 1 1/2V3 P0000 T01670161 $ |
| 2026-10-04 13:52 EDT | METAR | 16.7° | 16.1° | 2.6 | METAR KIAD 041752Z 03005KT 2SM -RA BR BKN006 OVC012 17/16 A3014 RMK AO2 RAB40 SLP206 VIS 1 1/2V3 P0000 60001 T01670161 10172 20156 58016 $ |
| 2026-10-04 14:05 EDT | SPECI | 17.2° | 16.1° | 2.6 | SPECI KIAD 041805Z 06005KT 1 3/4SM BR FEW003 BKN006 OVC012 17/16 A3013 RMK AO2 RAE1753 VIS 1 1/2V3 P0000 T01720161 $ |
| 2026-10-04 14:47 EDT | SPECI | 17° | 16° | 2.1 | SPECI KIAD 041847Z 06004KT 4SM BR BKN006 BKN010 OVC020 17/16 A3012 RMK AO2 RAE1753 P0001 $ |
| 2026-10-04 14:52 EDT | METAR | 17.2° | 16.1° | 2.1 | METAR KIAD 041852Z 05004KT 5SM BR BKN006 BKN011 OVC020 17/16 A3011 RMK AO2 RAE1753 SLP196 P0001 T01720161 $ |
| 2026-10-04 15:18 EDT | SPECI | 17.8°max | 16.1° | 2.1 | SPECI KIAD 041918Z 03004KT 7SM SCT006 BKN012 OVC018 18/16 A3011 RMK AO2 T01780161 $ |
| 2026-10-04 15:52 EDT | METAR | 17.8° | 16.1° | 1.5 | METAR KIAD 041952Z 03003KT 10SM SCT008 BKN012 OVC018 18/16 A3010 RMK AO2 SLP193 T01780161 $ |
| 2026-10-04 16:52 EDT | METAR | 17.8° | 16.1° | 2.1 | METAR KIAD 042052Z 03004KT 10SM SCT008 BKN012 OVC018 18/16 A3010 RMK AO2 SLP190 60001 T01780161 58007 $ |
| 2026-10-04 17:52 EDT | METAR | 17.2° | 16.1° | 2.6 | METAR KIAD 042152Z 05005KT 10SM SCT010 OVC016 17/16 A3009 RMK AO2 SLP188 T01720161 $ |
| 2026-10-04 18:15 EDT | SPECI | 17.2° | 16.1° | 2.6 | SPECI KIAD 042215Z 05005KT 5SM -DZ BR FEW008 BKN010 OVC015 17/16 A3009 RMK AO2 DZB14 P0000 T01720161 $ |
| 2026-10-04 18:52 EDT | METAR | 17.2° | 16.1° | 2.1 | METAR KIAD 042252Z 04004KT 6SM -DZ BR FEW008 BKN012 OVC015 17/16 A3009 RMK AO2 DZB14 SLP189 P0000 T01720161 $ |
| 2026-10-04 19:14 EDT | SPECI | 16.7° | 16.1° | 1.5 | SPECI KIAD 042314Z 08003KT 5SM -DZ BR FEW005 BKN009 OVC015 17/16 A3009 RMK AO2 P0000 T01670161 $ |
| 2026-10-04 19:52 EDT | METAR | 17.2° | 16.1° | 1.5 | METAR KIAD 042352Z 09003KT 4SM -DZ BR FEW005 BKN009 OVC018 17/16 A3009 RMK AO2 SLP190 P0000 60001 T01720161 10178 20167 56001 $ |
| 2026-10-04 20:31 EDT | SPECI | 17.2° | 16.1° | 1.5 | SPECI KIAD 050031Z 05003KT 7SM FEW005 SCT008 OVC016 17/16 A3010 RMK AO2 DZE30 P0000 T01720161 $ |
| 2026-10-04 20:52 EDT | METAR | 17.2° | 16.1° | 1.5 | METAR KIAD 050052Z 03003KT 6SM BR FEW005 SCT008 OVC014 17/16 A3011 RMK AO2 DZE30 SLP196 P0000 T01720161 $ |
| 2026-10-04 21:08 EDT | SPECI | 17.2° | 16.1° | 0 | SPECI KIAD 050108Z 00000KT 5SM -DZ BR FEW005 BKN008 OVC014 17/16 A3011 RMK AO2 DZB54 VIS N-NE AND NW 2 P0000 T01720161 $ |
| 2026-10-04 21:52 EDT | METAR | 16.7° | 16.1° | 1.5 | METAR KIAD 050152Z 32003KT 5SM -DZ BR SCT005 BKN008 OVC011 17/16 A3011 RMK AO2 SLP196 DZB54E30B41 VIS N-NE AND NW 2 P0000 T01670161 $ |
| 2026-10-04 22:52 EDT | METAR | 16.7° | 16.1° | 0 | METAR KIAD 050252Z 00000KT 5SM BR BKN005 BKN010 OVC020 17/16 A3011 RMK AO2 DZE0158 SLP194 P0000 60000 T01670161 50004 $ |
| 2026-10-04 23:52 EDT | METAR | 16.7° | 16.1° | 0 | METAR KIAD 050352Z 00000KT 10SM FEW005 SCT010 OVC030 17/16 A3010 RMK AO2 SLP192 T01670161 $ |
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/2026-10-04 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).