TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 7, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 7 Jul '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 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 highest temperature recorded at the London City Airport Station in degrees Celsius on 7 Jul '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 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 positioning and risk appetite alongside meteorological models. While meteorologists rely on atmospheric data and historical patterns, this market aggregates the financial incentives of thousands of participants betting real money on the outcome. Comparing current odds to published forecasts from the UK Met Office or other weather services can reveal where traders see upside or downside risk relative to official guidance. This divergence frequently highlights uncertainty that conventional forecasts may understate.
This market resolves around Jul 7, 2026, once the highest temperature recorded in London on July 7 is finalized and verifiable from credible public sources. The outcome is determined by comparing actual weather station readings against the temperature thresholds embedded in each contract. Once the day concludes and official data is published, the market settles automatically based on which outcome bracket the recorded high falls into. Traders holding winning shares receive their payout proportional to the final odds.
Several factors can shift odds significantly before July 7. Updated weather models from meteorological agencies often trigger repricing as forecasters refine their predictions. Unusual atmospheric patterns, jet stream positioning, or heat waves affecting Europe can drive trader sentiment toward higher temperatures. Conversely, cooler-than-expected seasonal patterns or incoming weather systems may push odds lower. Real-time market moves also reflect other traders' conviction, creating momentum that can amplify or reverse initial moves. Monitor weather alerts and model updates closely for the most actionable signals.