TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 27, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 27 Jun '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve until data for this date has been published. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 27 Jun '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve until data for this date has been published. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Prediction market odds emerge from decentralized trading rather than expert consensus, often incorporating real-time data and diverse participant perspectives. While meteorologists and weather services publish deterministic forecasts based on atmospheric models, this market aggregates the probabilistic views of traders who have financial incentive to be accurate. Comparing the two reveals whether the crowd's assessment of June 27's low temperature aligns with or diverges from professional meteorological guidance, offering insight into market confidence relative to expert opinion.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker (AMM) system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each temperature range outcome has its own price, which moves based on order flow and liquidity. The odds you see reflect the current ratio of shares held and traded; as new information emerges or sentiment shifts, prices adjust in real time. This continuous repricing mechanism ensures the market stays responsive to changing expectations about the weather outcome.
This market resolves around Jun 27, 2026, once June 27 has passed and the lowest temperature recorded in Hong Kong that day can be verified. The outcome is determined by comparing trader predictions against the actual observed low temperature from credible public weather reporting. Resolution typically occurs within hours or a day after the event, allowing winning positions to be settled and payouts distributed to traders who correctly predicted the temperature range.
Weather model updates, seasonal climate patterns, and atmospheric pressure systems approaching Hong Kong will all influence trading activity. Major weather alerts, typhoon warnings, or significant shifts in meteorological forecasts can trigger sharp price movements as traders reassess probabilities. Real-time temperature data from the days leading up to June 27, along with broader climate anomalies or El Niño effects, may also drive volatility. News about air quality or pollution events affecting local conditions could further sway market sentiment closer to the resolution date.