TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 3, 2:00 AM EST
Kalshi
This market tracks the highest temperature recorded in San Antonio on July 2, 2026. The outcome will be determined by the official National Weather Service Climatological Report for San Antonio, which records daily maximum temperatures. Different temperature ranges represent distinct possible outcomes for that day's weather.
Resolution is based on the maximum temperature recorded at San Antonio on July 2, 2026, according to the National Weather Service's Climatological Report (Daily). The official data source is accessed via the NWS website at the specified URL, selecting the "Observed Weather" tab and San Antonio location with Daily Climate Report. Temperature ranges are: 91°F or below, 92-93°F, 94-95°F, 96-97°F, 98-99°F, and 100°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) is the authoritative source, superseding other weather services.
Prediction market odds reflect aggregated trader beliefs and often diverge from traditional meteorologist forecasts because they incorporate real-money incentives and broader information sets. While weather analysts rely on numerical models and historical data, this market prices in trader expectations about forecast accuracy, potential model bias, and late-breaking atmospheric conditions. Over time, prediction markets have proven competitive with or superior to single-source forecasts for temperature events, particularly when traders include domain experts and weather enthusiasts. Comparing this market's implied probabilities to published forecasts from the National Weather Service or regional meteorologists can reveal where consensus differs most sharply.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell contracts representing different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each contract settles to either $1 or $0 depending on whether the actual high temperature falls within that bracket on July 2, 2026. The bid-ask spread reflects market liquidity and uncertainty; tighter spreads indicate higher confidence and trading volume, while wider spreads suggest lower participation or disagreement among traders. Real-time price discovery allows participants to enter or exit positions dynamically as new information becomes available.
This market resolves around Jul 3, 2026, once the highest temperature recorded in San Antonio on July 2, 2026 is verified and confirmed. The outcome is determined by comparing the official daily high to the temperature brackets offered in the contract specifications. All winning contracts settle to $1 per share, while non-winning contracts expire worthless. Verification relies on credible public reporting from established meteorological sources to ensure accuracy and prevent disputes.
Major weather pattern shifts, updated seasonal forecasts, and atmospheric anomalies such as heat domes or cold fronts will drive significant price movement in this market. El Niño or La Niña developments, changes to the jet stream, and historical temperature records for early July in San Antonio all serve as key catalysts. As the event date approaches, real-time weather models and 10-day forecasts become increasingly influential. Additionally, any unusual climate events or heat waves affecting the broader Southwest region could shift trader expectations about local conditions, causing rapid repricing across temperature brackets.