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: Jul 5, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 5 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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN. 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 Wellington Intl Airport Station in degrees Celsius on 5 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 Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN. 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 sentiment and financial incentives. While meteorologists rely on physics-based models and historical data, this market aggregates the beliefs of participants who have money at stake. Analysts may issue point forecasts or confidence ranges, whereas traders here express conviction through continuous price discovery. Comparing the implied probability from market odds to official weather service outlooks can reveal where the crowd sees value or risk that traditional forecasts may underweight or overlook.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each temperature outcome has its own contract, and the current price of a share reflects the probability the crowd assigns to that result occurring. If traders believe the highest temperature will reach 10°C, they bid up that contract's price; if skepticism grows, the price falls. The spread between bid and ask prices tightens as volume increases, making it cheaper to enter or exit positions during active trading periods.
This market resolves around Jul 5, 2026, once July 5 has passed and the day's highest temperature in Wellington is recorded. The outcome is confirmed against credible public sources that document the actual peak temperature reached. Traders holding shares in the correct outcome receive their payout, while incorrect positions expire worthless. Resolution typically occurs within hours of the market end time, once the temperature data is finalized and verified.
Several factors can shift odds in this market before July 5 arrives. Updated weather forecasts from meteorological agencies often trigger repricing as model confidence changes or new data emerges. Seasonal climate patterns, ocean temperatures, and atmospheric pressure systems influence long-range outlooks. Breaking news about unusual weather systems or climate anomalies can prompt rapid trader repositioning. As the event date approaches, intraday forecasts become more precise, typically narrowing the range of expected outcomes and concentrating trading volume around the most likely temperature bands.