Settlement stations / EGLC

GB · Europe/London

Polymarket settles London temperature on EGLC

EGLC is London City, London. 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 EGLC. 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-london, lowest-temperature-in-london

Reporting and delay

Regular reports:20 :50:20 and :50 past each hour, UTC — 2 regular reports per hour.
Median delay4 min 16 sFrom the observation time in the report to the public NOAA feed. 52 reports, measured 2026-09-17.
90th percentile4 min 28 sOne report in ten is at least this late. Worth knowing before you trust a quiet hour.
Coordinates51.505, 0.055Local civil time: Europe/London

Questions

Which weather station settles London temperature contracts?

Polymarket settles London on EGLC, London City.

What is the resolution source for Polymarket London 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 EGLC report?

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

How long does a EGLC 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 16 s, with a 90th percentile of 4 min 28 s across 52 reports. This moves with upstream conditions and is not a service level.

EGLC 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 London 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.