TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 10, 8:00 AM EST
Polymarket
This event group tracks the lowest temperature recorded in New York City on July 10, 2026. Kalshi uses a yes/no binary structure covering all temperature outcomes, while Polymarket uses a tiered temperature range structure. Both markets reference official weather data but differ in measurement station, source platform, and resolution mechanics.
This market will resolve to the temperature range that contains the lowest temperature recorded at the LaGuardia Airport Station in degrees Fahrenheit on 10 Jul '26. The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the LaGuardia Airport Station, available here: https://www.wunderground.com/history/daily/us/ny/new-york-city/KLGA. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution is determined by the minimum temperature recorded at Central Park, NY on July 9, 2026, according to the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS website by navigating to the Observed Weather tab and selecting Central Park NY with Daily Climate Report. The recorded minimum temperature will fall into one of six ranges: 64°F or below, 65-66°F, 67-68°F, 69-70°F, 71-72°F, or 73°F or above. Each range corresponds to a distinct market outcome. Traders should note that preliminary NWS reporting may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) value takes precedence over other weather data sources such as AccuWeather or Google Weather.
Prediction market prices often diverge from traditional weather forecasts because traders incorporate real-time data, historical patterns, and risk premiums that meteorologists may weight differently. While the National Weather Service issues point estimates and confidence intervals, this market prices uncertainty through continuous trading. Traders betting on extreme outcomes can move odds faster than official forecasts update, especially as conditions shift. Comparing the two reveals whether the crowd is more bullish or bearish on heat than institutional forecasters, offering a complementary perspective on temperature risk.
Polymarket and Kalshi may show different odds for identical temperature outcomes due to variations in liquidity, user base composition, and trading mechanics. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform attracts traders with different risk tolerances and information sets, so prices can lag or lead depending on which platform processes new weather data first. Arbitrage opportunities sometimes emerge when one platform reprices faster than the other. Monitoring both venues helps you spot mispricings and understand where the broader market consensus is strongest.
Major weather pattern shifts, updated seasonal forecasts, and real-time atmospheric data releases can all trigger sharp repricing in this market. Tropical systems, heat domes, or unexpected cold fronts moving toward the Northeast will shift trader expectations significantly. Historical analogues—such as past July 10 temperatures or similar weather setups—often influence early positioning. As the date approaches, intraday weather updates and model consensus changes become the primary drivers, with the final 48 hours typically seeing the most volatile trading as conditions crystallize.