Settlement stations / KLGA

US · America/New_York

Polymarket and IBKR settle New York temperature on KLGA

KLGA is LaGuardia Airport, New York. Polymarket and IBKR ForecastEx settle 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.

This city settles on two different stations

Polymarket and IBKR ForecastEx use KLGA (LaGuardia Airport). Kalshi and Polymarket US settle the same city on KNYC (Central Park) instead. The two sites can report different temperatures at the same moment and land in different contract buckets on the same day, so a reading from one tells you nothing definitive about the other.

How it settles

VenueResolution sourceUnitBucketContracts
PolymarketRoutine METAR reports published by aviationweather.gov
Source code KLGA. 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.		Fahrenheit2°F
Range contract		high · low
highest-temperature-in-nyc, lowest-temperature-in-nyc
IBKR ForecastEx
Also sold through Robinhood: same ticker, same settlement.		Weather Underground daily history table for this station
Source code KLGA. That table carries hourly METARs and SPECIs only, over the local clock day, and prints whole degrees rounded.		Fahrenheit1°F ladder
Exceeds X, one rung per degree		high · low
UHLGA, ULLGA

Reporting and delay

Regular reports:51:51 past each hour, UTC — 1 regular report per hour.
Median delay3 min 10 sFrom the observation time in the report to the public NOAA feed. 26 reports, measured 2026-09-17.
90th percentile3 min 36 sOne report in ten is at least this late. Worth knowing before you trust a quiet hour.
Coordinates40.779, -73.880Local civil time: America/New_York

Questions

Which weather station settles New York temperature contracts?

Polymarket and IBKR ForecastEx settle New York on KLGA, LaGuardia Airport. Kalshi and Polymarket US settle the same city on KNYC, Central Park, which is a different site.

What is the resolution source for Polymarket New York temperature?

Polymarket names Routine METAR reports published by aviationweather.gov. Contracts settle in Fahrenheit, on 2-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.

What is the resolution source for IBKR ForecastEx New York temperature?

IBKR ForecastEx names Weather Underground daily history table for this station. Contracts settle in Fahrenheit, as a ladder of contracts one degree apart that pay when the day's reading passes the strike. That table carries hourly METARs and SPECIs only, over the local clock day, and prints whole degrees rounded. Robinhood resells this same contract, at the same ticker and settlement.

When does KLGA report?

:51 past each hour, UTC — 1 regular report per hour.

How long does a KLGA 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 3 min 10 s, with a 90th percentile of 3 min 36 s across 26 reports. This moves with upstream conditions and is not a service level.

KLGA is live on the free plan: sign in with Google, GitHub or email, no card. Open it on the board.

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 New York 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.