Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Champions League Prediction) Pick polygram.ink (preferred broker) |
56% | 44% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
56% | 44% | 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 |
|---|---|
| 34°C | 56% |
| 33°C | 27% |
| 35°C | 16% |
| 32°C | 2% |
| 36°C | 1% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
Shanghai’s high temperature on 7 August will be read at Pudong airport, so the key question is whether the city’s summer heat translates into a station high above the common forecast bands rather than just a hot-feeling day elsewhere in town. AccuWeather’s August outlook for Shanghai puts daily highs mostly in the upper 20s to low 30s Celsius, with an August average high of 87°F, while travel and climate guides put typical August daytime maxima around 32–35°C and note that brief peaks can reach 38–40°C in hotter spells.[1][5][13]
That broader history matters because Shanghai often delivers one of two outcomes in August: a standard humid hot day near the low-to-mid 30s, or a sharper heat spike when the subtropical ridge dominates. Shanghai’s meteorological bureau has already issued an orange heatwave alert in the current spell, with forecasts of 35–38°C and only limited relief from afternoon showers, which supports the idea that the market should not be priced as a cool-weather event.[6] Even so, airport readings can stay a touch lower than inland city-centre maxima if cloud, sea breeze or thunderstorms interrupt the heat.[6][17]
For traders, the main catalyst is the day’s synoptic setup over eastern China: whether the heatwave holds through the afternoon, and whether any thunderstorms arrive early enough to cap the airport maximum. The most useful checks are the Shanghai Meteorological Bureau updates, the latest airport observation trend, and whether forecasts keep calling for 35°C-plus highs with only scattered showers, as several current outlooks do.[2][6][15] If the heat remains intact into the midday settlement window, a high in the upper 30s Celsius becomes much more plausible than the current 0% YES crowd view implies.[6]
Methodology
Football-specific comparison page for Highest temperature in Shanghai on August 7?. 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.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
- Can I trade Premier League prediction markets from the UK?
- Yes. Polymarket has Premier League outcome markets (title winner, relegation, top scorer). For UK traders wanting GBP settlement and UKGC protection, Betfair Exchange and Smarkets offer Premier League futures and match markets. Betfair is the deepest liquidity venue for UK football exchange markets.
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