Settlement stations / RKSI

KR · Asia/Seoul

Polymarket settles Seoul temperature on RKSI

RKSI is Incheon International, Seoul. Polymarket settles temperature contracts here. Below: the resolution source each venue names, when the station reports, and how long a reading takes to reach the public feed.

How it settles

VenueResolution sourceUnitBucketContracts
PolymarketRoutine METAR reports published by aviationweather.gov
Source code RKSI. Every report not marked SPECI counts, off-hour ones included, read from the T group in tenths of a degree Celsius and rounded half up to a whole degree of the contract. It is the same report stream shown here, so the running high tracks it directly.		Celsius1°C
Range contract		high · low
highest-temperature-in-seoul, lowest-temperature-in-seoul

Reporting and delay

Regular reports:00 :30:00 and :30 past each hour, UTC — 2 regular reports per hour.
Median delay4 min 33 sFrom the observation time in the report to the public NOAA feed. 52 reports, measured 2026-09-17.
90th percentile4 min 43 sOne report in ten is at least this late. Worth knowing before you trust a quiet hour.
Coordinates37.469, 126.451Local civil time: Asia/Seoul

Questions

Which weather station settles Seoul temperature contracts?

Polymarket settles Seoul on RKSI, Incheon International.

What is the resolution source for Polymarket Seoul temperature?

Polymarket names Routine METAR reports published by aviationweather.gov. Contracts settle in Celsius, on 1-degree buckets. Every report not marked SPECI counts, off-hour ones included, read from the T group in tenths of a degree Celsius and rounded half up to a whole degree of the contract. It is the same report stream shown here, so the running high tracks it directly.

When does RKSI report?

:00 and :30 past each hour, UTC — 2 regular reports per hour.

How long does a RKSI observation take to become public?

Measured over 26 hours on 2026-09-17, the median delay from the observation time in the report to its arrival on the public NOAA feed was 4 min 33 s, with a 90th percentile of 4 min 43 s across 52 reports. This moves with upstream conditions and is not a service level.

RKSI is live on every paid plan. See the plans — from $9.90 a month, cancel from the account portal.

WeatherTick tracks 76 settlement stations and publishes each day's running high and low already converted into the unit and bucket the contract settles in. Open Seoul on the board, or see every settlement station. Settlement always follows the resolution source named by the venue; the figures here are computed from the public feed and are not a settlement source.