TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
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 London City 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 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 reflect real-money bets from traders and often diverge from traditional meteorological forecasts. While weather analysts issue deterministic temperature predictions based on atmospheric models, prediction markets aggregate dispersed information and incentivize accuracy through financial stakes. Comparing Polymarket odds to UK Met Office or other meteorological agency forecasts can reveal whether traders are pricing in higher or lower temperatures than official models suggest, highlighting market sentiment about weather volatility or model uncertainty for June 1 in London.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, the highest temperature in London on June 1 is priced as a set of outcome contracts, each representing a specific temperature range or threshold. Traders buy and sell shares in outcomes they believe will occur, with prices reflecting the collective probability estimate. The market uses an automated market maker to determine pricing based on order flow and liquidity. As June 1 approaches, prices adjust in response to updated weather forecasts, seasonal patterns, and real-time trading activity.
The market resolves on Jun 1, 2026, after the highest temperature in London on June 1 has been recorded and verified. Resolution is determined by official temperature data recorded at a designated weather station in London on that date. The outcome is the single highest temperature reading during the calendar day, measured in degrees Celsius or Fahrenheit depending on the market's specification. Once the data is confirmed, the winning outcome contract is settled and traders receive payouts accordingly.
Several factors can shift market odds before June 1. Updated seasonal weather forecasts and long-range models from meteorological agencies will influence trader expectations. High-pressure systems, jet stream positioning, and Atlantic weather patterns are key catalysts. Major climate or atmospheric anomalies reported in late May could reprrice the market sharply. Additionally, historical temperature records and early June weather trends from prior years may prompt traders to adjust positions. Real-time forecasts issued days before June 1 will likely trigger the most significant price movements as uncertainty narrows.