Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Champions League Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 37°C | 100% |
| 31°C or below | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C or higher | 0% |
Market context
Shanghai is poised for another hot, humid afternoon, but the key number for this market is the highest temperature logged at Pudong Airport before the midday settlement cut-off. The current crowd pricing of 0% for YES sits against a forecast cluster that is materially warm: AccuWeather’s July outlook shows Shanghai daily highs broadly in the high 80s to low 100s Fahrenheit, with 31 July listed around 91°F, while other July guides describe the month as the city’s hottest period. [1][7][8]
For calibration, Shanghai’s late-July climatology usually supports peak heat rather than a cool outlier. WeatherSpark says 31 July is the clearest day of the month with 41% odds of clear to partly cloudy conditions, and TravelChinaGuide puts the late-July average around 34.2°C, which is consistent with a high-30s Celsius outcome if sunshine holds. Comparable forecasts for today from other services sit in a similar band: the Hong Kong Government’s city forecast listed Shanghai at 29–38°C yesterday, and the Met Office showed a Shanghai maximum of 37°C with low rain probabilities, underlining that a sub-30°C top end would be distinctly abnormal for this setup. [13][12][6][11]
The trader watch-list is straightforward: whether cloud, showers or thunderstorms build over Pudong during the warmest part of the day, and whether the airport station records its peak before the settlement window closes at 12:00 UTC. Current hourly and ten-day output from AccuWeather and Weather.com both keep Shanghai hot, with elevated humidity and non-trivial rain chances later in the day, so any earlier-than-expected rain band or persistent marine cloud would be the main drag on the maximum. [10][14][4]
Methodology
Football-specific comparison page for Highest temperature in Shanghai on July 31?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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