Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
94% | 6% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
94% | 6% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 37°C | 94% |
| 38°C | 6% |
| 39°C | 1% |
| 34°C or below | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 40°C | 0% |
| 41°C | 0% |
| 42°C | 0% |
| 43°C | 0% |
| 44°C or higher | 0% |
Market context
Chengdu’s official airport station will settle the market on the day’s peak temperature, so the relevant question is whether the city gets a modest July high or a hotter-than-average spike. Current market pricing is concentrated around **38°C** and **39°C**, with 38°C leading at 44% and 39°C at 22%, which implies traders are treating the upper-30s as the most likely band rather than an extreme break-out.[1]
That distribution fits Chengdu’s July pattern, where highs commonly sit in the low 30s but can edge higher in warmer spells. Historical and forecast-based weather pages for Chengdu point to typical July highs around 31–32°C, with day-to-day variation around that level, so a 0% view on the market’s lower outcomes is hard to reconcile with the city’s summer climatology.[2][3] In practice, any sustained clear-sky heat, a hot air mass moving in, or a weak monsoon break would be enough to push the airport reading towards the market’s leading bins.
For traders, the key catalysts are the airport-station forecast updates, any change in cloud cover or rainfall timing, and whether the overnight minimum stays elevated enough to support a hot afternoon. The settlement source is the Wunderground history page for Chengdu Shuangliu International Airport Station, so late adjustments to the observed daily high matter more than broad city forecasts.[1] The most useful watchpoints are the midday forecast revisions and any mention of thunderstorms, which can cap the day’s maximum even if earlier guidance looks warm.[3]
Methodology
Sports-specific comparison page for Highest temperature in Chengdu on July 23?. 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 or Manifold.
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
- 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.
- 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.
- 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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