Station-day record · settlement source
San Francisco · America/Los_Angeles · ← 2026-10-17 · 2026-10-19 → · All dates for KSFO · JSON
METAR KSFO 181756Z 31012KT 10SM FEW008 18/13 A3002 RMK AO2 SLP165 T01780133 10178 20144 50012
METAR KSFO 181056Z 29007KT 10SM FEW003 14/13 A2997 RMK AO2 SLP147 T01440133 $
Local day 2026-10-18 03:00 EDT → 2026-10-19 03:00 EDT (24 h, UTC-07:00) · 25 reports · longest gap 60 min
High 65°F (18.33°C) · Low 58°F (14.44°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 06:00 EDT · correction hold 3 h after local midnight
longest gap 60 min · limit 90 min
SHA-256 dd93c278064d5ca2c770fc09b5a8f949641c54c916a15b3058ad078f636f0f21
Transaction 0x4ae62783c94956b0a8fb8ac3868e725c4ba0ad761453422d265885bc1dab8567 · 2026-10-19 06:02 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 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 |
|---|---|---|---|---|---|
| 2026-10-18 03:56 EDT | METAR | 16.1° | 12.8° | 5.1 | METAR KSFO 180756Z 30010KT 10SM CLR 16/13 A2998 RMK AO2 SLP150 T01610128 402830156 CHINO RWY L10 VISNO $ |
| 2026-10-18 04:56 EDT | METAR | 15.6° | 12.8° | 3.6 | METAR KSFO 180856Z 29007KT 10SM CLR 16/13 A2997 RMK AO2 SLP148 T01560128 58003 $ |
| 2026-10-18 05:56 EDT | METAR | 15.6° | 13.3° | 4.1 | METAR KSFO 180956Z 30008KT 10SM FEW004 16/13 A2997 RMK AO2 SLP148 T01560133 $ |
| 2026-10-18 06:56 EDT | METAR | 14.4°min | 13.3° | 3.6 | METAR KSFO 181056Z 29007KT 10SM FEW003 14/13 A2997 RMK AO2 SLP147 T01440133 $ |
| 2026-10-18 07:56 EDT | METAR | 14.4° | 13.3° | 5.1 | METAR KSFO 181156Z 30010KT 10SM FEW003 14/13 A2996 RMK AO2 SLP146 T01440133 10167 20144 58002 $ |
| 2026-10-18 08:56 EDT | METAR | 14.4° | 12.8° | 4.1 | METAR KSFO 181256Z 30008KT 10SM FEW003 14/13 A2997 RMK AO2 SLP148 T01440128 $ |
| 2026-10-18 09:56 EDT | METAR | 14.4° | 12.8° | 5.1 | METAR KSFO 181356Z 29010KT 10SM FEW006 14/13 A2997 RMK AO2 SLP150 T01440128 $ |
| 2026-10-18 10:56 EDT | METAR | 14.4° | 12.8° | 3.6 | METAR KSFO 181456Z 28007KT 10SM FEW006 14/13 A2999 RMK AO2 SLP154 T01440128 53007 $ |
| 2026-10-18 11:56 EDT | METAR | 15.6° | 13.3° | 4.1 | METAR KSFO 181556Z 31008KT 10SM FEW006 16/13 A3001 RMK AO2 SLP162 T01560133 |
| 2026-10-18 12:56 EDT | METAR | 17.2° | 13.3° | 5.1 | METAR KSFO 181656Z 31010KT 10SM FEW008 17/13 A3002 RMK AO2 SLP166 T01720133 |
| 2026-10-18 13:56 EDT | METAR | 17.8°max | 13.3° | 6.2 | METAR KSFO 181756Z 31012KT 10SM FEW008 18/13 A3002 RMK AO2 SLP165 T01780133 10178 20144 50012 |
| 2026-10-18 14:56 EDT | METAR | 17.8° | 12.8° | 7.7 | METAR KSFO 181856Z 31015KT 10SM FEW008 18/13 A3002 RMK AO2 SLP167 T01780128 |
| 2026-10-18 15:56 EDT | METAR | 17.8° | 12.8° | 8.2 | METAR KSFO 181956Z 30016G23KT 10SM FEW008 FEW013 18/13 A3002 RMK AO2 SLP164 T01780128 VISNO $ |
| 2026-10-18 16:56 EDT | METAR | 17.8° | 12.2° | 9.3 | METAR KSFO 182056Z 30018G25KT 10SM FEW008 FEW014 18/12 A3000 RMK AO2 PK WND 30026/2023 SLP159 T01780122 58006 VISNO $ |
| 2026-10-18 17:56 EDT | METAR | 17.8° | 12.2° | 7.7 | METAR KSFO 182156Z 28015KT 10SM FEW004 18/12 A2999 RMK AO2 PK WND 29026/2109 SLP155 T01780122 $ |
| 2026-10-18 18:56 EDT | METAR | 17.2° | 11.7° | 8.2 | METAR KSFO 182256Z 28016KT 10SM FEW005 SCT200 17/12 A2999 RMK AO2 PK WND 28028/2241 SLP155 T01720117 $ |
| 2026-10-18 19:56 EDT | METAR | 16.7° | 11.7° | 9.8 | METAR KSFO 182356Z 26019G26KT 10SM FEW007 SCT010 17/12 A2999 RMK AO2 PK WND 29026/2319 SLP154 T01670117 10183 20167 56005 $ |
| 2026-10-18 20:05 EDT | SPECI | 16.1° | 11.7° | 9.3 | SPECI KSFO 190005Z 28018G26KT 10SM FEW007 BKN011 16/12 A2999 RMK AO2 PK WND 27026/0000 T01610117 $ |
| 2026-10-18 20:56 EDT | METAR | 15.6° | 11.1° | 9.3 | METAR KSFO 190056Z 27018G23KT 10SM FEW009 BKN012 16/11 A2998 RMK AO2 PK WND 27026/0000 SLP152 T01560111 $ |
| 2026-10-18 21:56 EDT | METAR | 15° | 11.1° | 5.7 | METAR KSFO 190156Z 26011KT 10SM BKN011 15/11 A2999 RMK AO2 SLP154 T01500111 $ |
| 2026-10-18 22:56 EDT | METAR | 15° | 11.1° | 6.2 | METAR KSFO 190256Z 28012KT 10SM SCT012 BKN016 15/11 A3000 RMK AO2 SLP159 T01500111 53005 $ |
| 2026-10-18 23:56 EDT | METAR | 15° | 11.1° | 5.7 | METAR KSFO 190356Z 28011G18KT 10SM FEW008 BKN017 15/11 A3001 RMK AO2 SLP162 T01500111 $ |
| 2026-10-19 00:56 EDT | METAR | 15° | 10.6° | 5.7 | METAR KSFO 190456Z 27011KT 10SM FEW008 OVC016 15/11 A3002 RMK AO2 SLP164 T01500106 $ |
| 2026-10-19 01:56 EDT | METAR | 15° | 10° | 4.1 | METAR KSFO 190556Z 25008KT 10SM FEW008 OVC019 15/10 A3002 RMK AO2 SLP167 T01500100 10167 20150 51008 $ |
| 2026-10-19 02:56 EDT | METAR | 14.4° | 10.6° | 4.1 | METAR KSFO 190656Z 29008KT 10SM FEW008 OVC017 14/11 A3001 RMK AO2 SLP162 T01440106 $ |
Settlement source: the METAR-derived station-day record for KSFO for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KSFO/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/KSFO/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KSFO/YYYY-MM-DD (JSON).