TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 12, 3:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Phoenix on July 11, 2026. The outcome will be determined by the official National Weather Service daily climatological report for Phoenix, which provides the authoritative minimum temperature measurement for that date.
Resolution is based on the minimum temperature recorded at Phoenix, AZ on July 11, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS Southwest Region Climate portal by selecting Phoenix with the Daily Climate Report option. Traders should use the latest available version of the data for the specified date. While preliminary NWS data and alternative weather sources like AccuWeather or Google Weather may provide guidance, the final authoritative value is determined exclusively by the NWS Climatological Report (Daily). Preliminary NWS reporting may be subject to rounding and conversion nuances that could affect interpretation of borderline values.
Prediction market odds reflect the aggregated beliefs of thousands of traders betting real money on outcomes, often diverging meaningfully from traditional meteorologist forecasts. While weather analysts rely on deterministic models and historical climate data, this market prices in trader conviction, media attention, and emerging atmospheric patterns. Prediction markets tend to update faster than official forecasts when new information surfaces, though both approaches have distinct strengths. Comparing the two can reveal where expert opinion and crowd sentiment align or diverge on the likely low temperature for that date.
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 is represented as a separate contract, and the price of each reflects the probability traders assign to that temperature occurring. Bid-ask spreads tighten as volume increases, making it cheaper to enter or exit positions during peak trading hours. The platform's matching engine ensures transparent price discovery, so you can see exactly what other traders are willing to pay for each temperature outcome.
This market resolves around Jul 12, 2026, once the lowest temperature recorded in Phoenix on July 11, 2026 is confirmed and verifiable from credible public sources. The outcome is determined by the actual meteorological data reported for that date, ensuring an objective and transparent settlement. Traders' positions are settled based on which temperature range or specific value the official record confirms. Resolution typically occurs within hours of the market end date once the data is publicly available and validated.
Major weather pattern shifts, seasonal climate anomalies, and updated long-range forecasts from meteorological agencies can significantly move this market. El Niño or La Niña developments, volcanic activity affecting atmospheric conditions, and unusual solar cycles may influence trader positioning. As July 2026 approaches, weekly and daily forecasts will become increasingly precise, typically causing price convergence around the most likely outcome. Media coverage of extreme heat events or climate records can also shift sentiment. Real-time atmospheric data releases and any revisions to historical temperature records for Phoenix may trigger rapid repricing.