How many days will Phoenix exceed 90°F?

Currently, the prevailing sentiment in this market reflects traders' expectations regarding the likelihood of prolonged extreme heat in Phoenix. It's important to note that prediction market prices aren't necessarily aligned with traditional analyst forecasts; they represent a collective intelligence view based on actual money at stake. If analysts are predicting a higher or lower probability of this heat wave than what's reflected in the current price, it could present an opportunity for informed traders. This difference in perspective is a key feature of prediction markets, offering a unique signal compared to conventional forecasting methods.

On Kalshi, this market is priced using a continuous double auction, meaning traders can buy and sell contracts at any time, setting their own prices. The price of a contract represents the implied probability of the event occurring. As more traders buy contracts, the price increases, indicating a higher perceived probability, and vice-versa. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market’s price fluctuates based on supply and demand, reflecting the evolving beliefs of participants. This dynamic pricing mechanism allows for a real-time assessment of the likelihood of the Phoenix heat wave, driven by the collective actions of traders.

This market resolves around Sep 22, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the resolution will be based on publicly available data from a recognized meteorological source regarding the average daily temperatures in Phoenix during the week of September 14, 2026. The number of consecutive days exceeding 90°F will be counted to determine whether the market resolves in the affirmative or negative. The final outcome will be determined by the verified temperature data, providing a clear and objective result for this market.

Several factors could influence trading activity in this market leading up to Sep 22, 2026. Long-range weather forecasts, particularly those released by the National Weather Service or other reputable meteorological organizations, will be closely watched. Any indications of a strengthening El Niño or La Niña pattern, which can significantly impact weather patterns in the southwestern United States, could also move the market. Additionally, reports on climate change trends and their potential effects on extreme heat events might influence trader sentiment. Unexpected heat waves in other regions could also impact perceptions of the likelihood of this event.