Settlement stations / LTFM

TR · Europe/Istanbul

Polymarket settles Istanbul temperature on LTFM

LTFM is Istanbul Airport, Istanbul. 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 LTFM. 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-istanbul, lowest-temperature-in-istanbul

Reporting and delay

Regular reports:20 :50:20 and :50 past each hour, UTC — 2 regular reports per hour.
Median delay5 min 17 sFrom the observation time in the report to the public NOAA feed. 52 reports, measured 2026-09-17.
90th percentile5 min 25 sOne report in ten is at least this late. Worth knowing before you trust a quiet hour.
Coordinates41.262, 28.740Local civil time: Europe/Istanbul

Questions

Which weather station settles Istanbul temperature contracts?

Polymarket settles Istanbul on LTFM, Istanbul Airport.

What is the resolution source for Polymarket Istanbul 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 LTFM report?

:20 and :50 past each hour, UTC — 2 regular reports per hour.

How long does a LTFM 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 5 min 17 s, with a 90th percentile of 5 min 25 s across 52 reports. This moves with upstream conditions and is not a service level.

LTFM 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 Istanbul 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.