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: Jun 1, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 1 Jun '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Prediction market odds on Polymarket reflect aggregated trader beliefs and often incorporate meteorological models, historical June temperature patterns, and climate data faster than traditional analyst forecasts. While weather analysts typically issue point estimates or ranges based on numerical weather prediction models, markets price uncertainty across multiple temperature buckets. Comparing market-implied probabilities to analyst confidence intervals can reveal whether traders are pricing in more or less tail risk than experts expect, offering a complementary view of temperature expectations for Mexico City on that date.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, this event is priced as a set of binary or categorical outcome contracts, each representing a specific temperature range or threshold. Traders buy and sell shares corresponding to their belief about which range the high temperature will fall into. The price of each contract reflects the market's collective probability estimate. As the event date approaches and new weather data emerges, prices adjust based on supply and demand. Liquidity and spreads may vary across different temperature buckets depending on trader interest and conviction.
The market resolves on Jun 1, 2026, after the highest temperature in Mexico City on June 1 has been recorded and verified. The outcome is determined by official temperature data from a designated weather authority or data provider specified in the market rules. Once the peak temperature for that day is confirmed, the winning outcome contract is paid out in full and all other contracts expire worthless. Resolution typically occurs within hours or a day after the event concludes, depending on data availability and platform settlement procedures.
Major weather pattern shifts, including changes to high-pressure systems, tropical moisture, or upper-level wind patterns, can significantly move market odds. Updated seasonal climate forecasts, El Niño or La Niña conditions, and historical temperature anomalies for early June in Mexico City all influence trader positioning. Real-time weather model runs in the days leading up to June 1 will tighten probability distributions. Urban heat island effects, air quality events, or unusual atmospheric circulation could also surprise markets. As the date approaches, short-range forecasts become more reliable and typically reduce uncertainty in the market.