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: Jun 30, 4:00 AM EST
Kalshi
This event tracks the highest temperature recorded in Las Vegas on June 29, 2026. The actual temperature will be determined from the National Weather Service's official Climatological Report (Daily) for Las Vegas, which serves as the authoritative source for weather data resolution.
Resolution is based on the maximum temperature recorded at Las Vegas on June 29, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS website at the provided URL, selecting the "Observed Weather" tab and "Las Vegas, NV" location with Daily Climate Report. Temperature ranges are divided into six bands: 90°F or below, 91-92°F, 93-94°F, 95-96°F, 97-98°F, and 99°F or above, with each band corresponding to a distinct market outcome. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) serves as the definitive resolution source, superseding other weather services or preliminary reports.
Prediction market odds reflect aggregated trader beliefs and often diverge from traditional meteorological forecasts because they incorporate broader information—including historical heat patterns, climate trends, and real-time atmospheric data. While weather analysts issue deterministic point forecasts or confidence intervals, this market prices uncertainty as a probability, allowing traders to express nuanced views on whether June 29 will exceed specific temperature benchmarks. Comparing the two reveals whether the crowd is more bullish or bearish on extreme heat than official guidance suggests.
On Kalshi, this market is priced through a continuous order-book mechanism where traders submit bids and asks for shares tied to temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The platform calculates implied probabilities from the spread between buy and sell prices, and those odds update in real time as new trades execute. Liquidity and trading volume directly influence how tight the bid-ask spread remains, affecting the precision of the probability signal.
This market resolves around Jun 30, 2026, after June 29, 2026, has concluded. The outcome is determined by the verified highest temperature recorded in Las Vegas on that date, confirmed once the event is observable from credible public reporting. Traders holding shares in the outcome bracket that matches the actual high temperature receive their payout, while other positions expire worthless.
Major climate patterns—including El Niño or La Niña phases, seasonal monsoon activity, and upper-atmosphere ridge positioning—significantly influence long-range temperature expectations for the Southwest. Updated seasonal forecasts from NOAA or other meteorological agencies can shift trader positioning. Additionally, historical heat records for late June in Las Vegas and real-time atmospheric anomalies as 2026 approaches will prompt repricing. Media coverage of extreme heat events elsewhere may also sway risk sentiment in this market.