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, 3:00 AM EST
Kalshi
This market tracks the highest temperature recorded in Phoenix on June 29, 2026. The outcome is determined by which temperature range the daily maximum falls into, as reported by the National Weather Service's official Climatological Report for Phoenix.
Resolution is based on the maximum temperature recorded at Phoenix on June 29, 2026, according to the National Weather Service's Climatological Report (Daily). The official data source is accessed via the NWS website at the provided URL, selecting the "Observed Weather" tab and "Phoenix, AZ" location with Daily Climate Report. Temperature ranges are: 99°F or below, 100-101°F, 102-103°F, 104-105°F, 106-107°F, and 108°F or above. Each range 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) value takes precedence over other weather sources such as AccuWeather or Google Weather.
Prediction market odds reflect real-money commitments from traders and often incorporate a broader range of information than traditional analyst forecasts alone. While meteorologists and climate analysts publish seasonal temperature outlooks and historical trend analysis, this market aggregates those signals alongside trader conviction and betting patterns. Markets tend to price in tail risks and uncertainty more explicitly than point forecasts. Comparing this market's odds to published analyst expectations can reveal where traders believe consensus may be underestimating or overestimating the likelihood of extreme heat on that date.
On Kalshi, this market is priced through an order-book mechanism where traders buy and sell contracts corresponding to different temperature ranges for June 29, 2026. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each contract represents a specific outcome band, and the price of each reflects the probability traders assign to that range occurring. As new information emerges—updated seasonal forecasts, climate data, or historical precedent—traders adjust their bids and asks, moving prices up or down. The spread between buy and sell prices indicates market liquidity and confidence in that particular outcome.
This market resolves around Jun 30, 2026, after June 29, 2026 has passed and the actual high temperature in Phoenix is recorded. The outcome is determined by verified data from credible public sources documenting the day's peak temperature. Once the event is confirmed and reported, this market settles to the outcome band that contains the verified high. Traders holding contracts in the winning range receive their payout, while other positions expire worthless.
Several factors could shift odds significantly before resolution. Updated seasonal climate forecasts and El Niño or La Niña patterns influence long-range temperature expectations for the Southwest. Historical heat records and anomalies in spring and early summer 2026 may signal whether extreme heat is becoming more likely. Real-time weather models as June approaches will narrow uncertainty and drive sharper price moves. Additionally, any major atmospheric or climate events—volcanic activity, solar cycles, or unexpected weather patterns—could alter trader expectations about Phoenix's peak temperature that day.