TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 25, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the lowest temperature recorded at the London City Airport Station in degrees Celsius on 25 Jun '26. The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC. 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.
This market will resolve to the temperature range that contains the lowest temperature recorded at the London City Airport Station in degrees Celsius on 25 Jun '26. The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC. 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 often diverge from traditional weather analyst forecasts because they incorporate real-time trader conviction and aggregate dispersed information across many participants. While meteorologists publish deterministic point forecasts and confidence intervals, this market prices uncertainty through continuous trading. Comparing the implied probability in this market to published forecasts from the UK Met Office or other agencies can reveal where traders believe official models may be underweighting or overweighting specific temperature ranges, offering a complementary perspective on June 25 conditions.
This market resolves around Jun 25, 2026, once June 25 has passed and the lowest temperature recorded in London can be verified. The outcome is confirmed against credible public reporting from established meteorological sources, ensuring an objective and transparent settlement. Traders holding contracts aligned with the verified temperature will receive their winnings, while positions on incorrect outcomes expire worthless, creating strong incentives for accurate forecasting throughout the trading period.
Major weather model updates, seasonal climate anomalies, and atmospheric pressure systems over the North Atlantic can all shift market prices significantly. Unexpected heat waves or cold fronts predicted by the European Centre for Medium-Range Weather Forecasts or other agencies will prompt traders to reprrice their positions. Additionally, historical temperature records for late June in London and real-time observations in the days leading up to June 25 serve as key reference points, causing sharp trading activity when actual conditions begin to diverge from earlier consensus expectations.