Resolution criteria on PolyGram: This market will resolve to the temperature range that contains the highest temperature recorded at the Qingdao Jiaodong International Airport Station in degrees Celsius on 6 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 Qingdao Jiaodong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/qingdao/ZSQD. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| 18°C or below | 0% YES | 100% NO |
| 19°C | 1% YES | 99% NO |
| 20°C | 1% YES | 99% NO |
| 21°C | 9% YES | 91% NO |
| 22°C | 25% YES | 75% NO |
| 23°C | 28% YES | 73% NO |
| 24°C | 22% YES | 79% NO |
| 25°C | 16% YES | 85% NO |
On 6 June 2026, the highest temperature recorded at Qingdao Jiaodong International Airport Station will fall within one of several defined ranges in Celsius. The market currently shows 0% implied probability across all temperature brackets on Polymarket's order book, indicating either extremely wide bid-ask spreads or minimal liquidity at present pricing. This settlement will draw from historical temperature data via Wunderground, with the measurement window closing at 12:00 UTC on the resolution date.
Qingdao's early June climate typically ranges between 18–26°C, with occasional peaks toward 28°C during warmer years. Historical data from the airport station shows June temperatures rarely exceed 30°C, though heat waves can push readings higher. The current 0% probability across all ranges suggests traders have not yet committed capital to specific temperature brackets, leaving the order book unpriced relative to seasonal norms and recent years' patterns.
The primary catalyst affecting this market is the East Asian weather pattern developing through May 2026, particularly any strengthening of the Pacific subtropical high or tropical systems approaching the region. Traders should monitor China Meteorological Administration forecasts and any significant atmospheric circulation shifts in late May that could drive anomalous heat into early June. The settlement mechanism's reliance on a single airport station means localised conditions at that specific location will determine outcomes, rather than broader city-wide temperature averages.
The highest temperature recorded on Earth has been measured in three major ways: air, ground, and via satellite observation. Air measurements are used as the standard measurement due to persistent issues with unreliable ground and satellite readings. Air measurements are noted by the World Meteorological Organization (WMO) and Guinness World Records among ot
The following is a list of the most extreme temperatures recorded in Canada.
This market settles from the official outcome published at https://www.wunderground.com/history/daily/cn/qingdao/ZSQD. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
The mechanics for trading "Highest temperature in Qingdao on June 6?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$2K in lifetime turnover and $12K of resting liquidity puts this market in the below the median by volume for weather contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.
Last 24 hours alone saw $2K in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Resolution is sourced from https://www.wunderground.com/history/daily/cn/qingdao/ZSQD. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
This prediction market is scheduled to close on 6 June 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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