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: May 29, 8:00 AM EST
Polymarket
This market tracks whether the lowest temperature recorded at Paris-Le Bourget Airport Station will reach 20°C on May 29, 2026. On Polymarket, the outcome that the low will be 20°C is priced at 66.0%. Resolution will be determined by historical temperature data from Weather Underground, which maintains detailed records for the airport station. Watch for the actual low temperature reading on May 29, 2026, as that date approaches, since it will directly determine the market outcome.
Prediction market odds reflect aggregated trader beliefs and often diverge from traditional meteorological forecasts. While weather analysts issue point estimates and confidence intervals based on atmospheric models, prediction markets incorporate real-time information, historical accuracy, and economic incentives. Comparing Polymarket odds to published forecasts from Météo-France or similar services can reveal whether traders are pricing in more or less downside risk than official models suggest, highlighting market-specific sentiment about May 29 conditions.
The market resolves on May 29, 2026, after the lowest temperature in Paris on May 29 has been recorded. Resolution is determined by official temperature data from a designated meteorological source, which measures the minimum temperature reached during the specified day. Once the actual lowest temperature is confirmed and published, the outcome is settled and traders receive payouts based on which contract outcome occurred.
Major weather pattern shifts, updated seasonal forecasts, and atmospheric pressure systems can significantly move odds. Late-spring cold fronts, high-altitude blocking patterns, or unexpected jet-stream configurations may increase the probability of lower temperatures. Conversely, persistent high-pressure ridges or warm air advection could reduce downside risk. Real-time weather model updates, particularly from major forecasting centers, typically trigger repricing. Traders also monitor historical May temperature records and climate anomalies to adjust positions as May 29 approaches.