TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 11, 3:00 AM EST
Kalshi
This market tracks the highest temperature recorded in Phoenix on July 10, 2026, using official National Weather Service data from Phoenix, Arizona. The outcome will be determined by the maximum temperature reading on that specific date.
Resolution is based on the maximum temperature recorded at Phoenix, AZ on July 10, 2026, as reported in the National Weather Service's Climatological Report (Daily). The temperature is divided into six ranges: 108°F or below, 109-110°F, 111-112°F, 113-114°F, 115-116°F, and 117°F or above. Each range corresponds to a distinct outcome. Official data must be obtained from the NWS Climatological Report via the specified URL, selecting Phoenix, AZ with Daily Climate Report. While preliminary NWS data and third-party weather sources may provide guidance, the final determination uses only the official NWS Climatological Report (Daily) values. Traders should be aware that preliminary NWS reporting and measurement methods may involve rounding and conversion nuances that could affect the final reading.
Prediction market odds often diverge from traditional meteorological forecasts because traders incorporate broader information—including climate patterns, historical precedent, and real-time atmospheric data—into their pricing. While weather analysts issue point estimates or confidence intervals, this market aggregates collective trader expectations into live probabilities. Comparing the two reveals whether the crowd is pricing in more or less tail risk than official forecasts suggest, offering a complementary lens on extreme heat likelihood.
This market resolves around Jul 11, 2026, once July 10, 2026 has passed and the highest temperature recorded in Phoenix that day is confirmed. The outcome is determined by verified public reporting of the actual maximum temperature, ensuring all traders reference the same factual record. Positions are settled based on which temperature bracket or range the final reading falls into, with payouts distributed accordingly.
Major climate forecasts, seasonal pattern updates, and long-range weather models will influence trader positioning as July 2026 approaches. El Niño or La Niña conditions, atmospheric pressure systems, and historical heat wave data serve as key catalysts. Additionally, any shift in Phoenix's urban heat island effect or unexpected atmospheric anomalies could prompt sharp repricing. Traders monitor both meteorological institutes and real-time atmospheric indicators to adjust their exposure ahead of the settlement date.