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 2, 3:59 AM EST
Kalshi
This event group asks what the highest temperature will be in Los Angeles on July 2, 2026. Kalshi and Polymarket both aim to resolve based on official temperature data from Los Angeles International Airport, but they differ significantly in date reference, resolution source, and temperature range bucketing.
This market will resolve to the temperature range that contains the highest temperature recorded at the Los Angeles International Airport Station in degrees Fahrenheit on 2 Jul '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Los Angeles International Airport Station, available here: https://www.wunderground.com/history/daily/us/ca/los-angeles/KLAX. 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 highest temperature recorded at Los Angeles Airport, California on July 1, 2026, as reported in the National Weather Service's Climatological Report (Daily). The temperature is divided into six ranges: below 65°, 65-66°, 67-68°, 69-70°, 71-72°, and above 72°. Each range corresponds to a separate market outcome that resolves to Yes if the recorded temperature falls within that range. The official NWS Climatological Report (Daily) is the sole authoritative source for resolution; preliminary NWS data and third-party weather services are not used for final determination. Traders should be aware that preliminary NWS reporting may involve rounding and conversion nuances that could differ from the final official value.
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 different trader demographics, uses distinct contract designs, and may settle outcomes using slightly different data sources or timing windows. Polymarket structures its contracts around binary thresholds, while Kalshi offers granular temperature bands, creating different incentive structures for how traders express their views. Liquidity concentration also varies—one platform may have deeper order books for certain outcomes, pushing prices apart. Additionally, platform-specific fees, user interfaces, and promotional activity can shift where informed traders choose to deploy capital, causing temporary or persistent price divergence on the same underlying event.
Major weather pattern shifts, updated seasonal forecasts, or sudden atmospheric anomalies can significantly reprrice this market. Heat waves, cold fronts, or unusual pressure systems affecting Southern California will trigger trader repositioning as new meteorological data becomes available. Long-range model updates from the National Weather Service or other forecasters often spark volatility when they shift expected temperature ranges. Additionally, historical temperature records for July 2 and real-time atmospheric conditions in the days leading up to the event will draw trader attention. Late-stage price movements typically reflect the most recent weather observations and short-term model consensus.