TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 25, 3:00 AM EST
Kalshi
This market tracks the highest temperature recorded in Phoenix, Arizona on June 24, 2026. The outcome is determined by the official National Weather Service daily climatological report for that date, which provides the authoritative maximum temperature measurement for the city.
Resolution is based on the maximum temperature recorded at Phoenix on June 24, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS Phoenix office website by navigating to the Observed Weather section and selecting Phoenix, AZ with Daily Climate Report. Temperature ranges are divided into six bands: 108°F or below, 109-110°F, 111-112°F, 113-114°F, 115-116°F, and 117°F or above. Each temperature band corresponds 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 source, superseding other weather services.
Prediction market odds reflect real-money consensus from traders who profit or lose based on accuracy, creating strong incentives for informed pricing. Analyst forecasts, by contrast, rely on meteorological models and expert judgment but lack direct financial stakes. This market aggregates dispersed trader knowledge into a single probability, often capturing nuances that individual forecasts miss. When meteorologists and traders diverge significantly, it typically signals either new data entering the market or differing confidence levels in model reliability for that specific date and location.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares corresponding to different temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome has its own price, reflecting the collective belief of all active traders. Prices move as new orders flow in, with higher demand for a particular temperature range pushing its price upward. The spread between bid and ask prices tightens as liquidity increases, allowing traders to enter and exit positions with minimal slippage.
This market resolves around Jun 25, 2026, once the highest temperature recorded in Phoenix on June 24, 2026 is confirmed and verifiable from credible public sources. The outcome is determined by official temperature data, typically from the National Weather Service or equivalent meteorological authority. Traders holding shares in the correct temperature range at resolution receive their payout, while incorrect positions expire worthless. Resolution timing depends on when official records are finalized and published.
Major weather pattern shifts, updated seasonal forecasts, and atmospheric anomalies can significantly move this market. El Niño or La Niña developments, volcanic activity affecting solar radiation, and unexpected heat waves in the Southwest all influence trader expectations. As June 2026 approaches, real-time weather data and short-term forecasts become increasingly relevant, often triggering sharp price moves. News of climate events, air quality alerts, or infrastructure changes affecting Phoenix's microclimate may also prompt traders to reassess their positions.