TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 4, 12:59 AM EST
Kalshi
This event tracks the peak temperature in Miami on July 3, 2026, using official National Weather Service daily climate data. The outcome will be determined by the maximum temperature recorded at Miami International Airport.
Resolution is based on the highest temperature recorded at Miami International Airport on July 3, 2026, as reported by the National Weather Service's Climatological Report (Daily). Temperature ranges are: 87°F or below, 88-89°F, 90-91°F, 92-93°F, 94-95°F, and 96°F or above. Traders should note that preliminary NWS reporting may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) value takes precedence over other weather sources like AccuWeather or Google Weather.
Prediction market odds reflect aggregated trader expectations and often diverge from traditional meteorological forecasts. While weather analysts rely on physics-based models and historical climate data, this market prices in trader sentiment, recent temperature trends, and broader climate patterns. Markets can move ahead of official forecasts when new data emerges, or lag behind if traders are slow to incorporate expert updates. Comparing the implied probability here to consensus forecasts from the National Weather Service or academic climate models provides insight into whether traders are pricing in more optimistic or pessimistic outcomes than experts currently project.
On Kalshi, this market is priced through an order-book mechanism where traders submit bids and asks for different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The platform matches buyers and sellers in real time, with prices reflecting the marginal trade. Each outcome has its own contract, and the sum of all outcome probabilities should equal 100 percent. Traders can enter or exit positions at any time before the market closes, and prices adjust dynamically based on new information and trading flow. Liquidity and spreads vary depending on trading volume and participant interest in specific temperature ranges.
This market resolves around Jul 4, 2026, after the date in question has passed and the actual high temperature for Miami on July 3, 2026 is recorded. The outcome is confirmed once the event is verifiable from credible public reporting, typically from the National Weather Service or equivalent meteorological authority. Traders who correctly predicted the temperature range or exact value receive payouts proportional to their position size. The resolution process is automatic once the data is finalized, ensuring all participants receive their winnings or losses simultaneously.
Major weather pattern shifts, updated seasonal climate forecasts, and El Niño or La Niña developments could significantly move this market. Tropical storm or hurricane activity in the Atlantic could cool or warm Miami's expected conditions. Long-range weather models released by NOAA or international meteorological centers often trigger repricing as traders adjust their expectations. Urban heat island effects, recent local temperature records, and broader climate anomalies also influence trading. As July 2026 approaches, near-term forecasts become more reliable and typically cause sharper price movements as uncertainty narrows.