Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
40% | 60% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
40% | 60% | 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 |
|---|---|
| 25°C | 40% |
| 26°C | 39% |
| 27°C | 14% |
| 28°C | 3% |
| 29°C | 1% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 30°C | 0% |
| 31°C or higher | 0% |
Market context
Shanghai faces a day of high heat and potential thunderstorms on 30 June 2026, with the Shanghai Pudong International Airport Station expected to record temperatures that could push into the upper ranges of the seasonal average. Historical data for June at this location shows daily highs increasing from 77°F to 83°F, rarely falling below 69°F or exceeding 92°F, while precipitation peaks in this month with an average of 6.3 inches [1][2]. The current crowd-implied probability of 22% YES suggests traders are cautious about the temperature reaching the specific threshold, likely due to the high likelihood of rain and cloud cover suppressing peak heat, as the average daily solar energy is gradually decreasing through June [1].
Traders should monitor the real-time weather updates for Tuesday, 30 June, particularly the 25% risk of thunderstorms and light rain forecasted for the day, which could significantly lower the maximum temperature recorded [6]. The settlement depends entirely on the highest temperature recorded at all times on this day at the Pudong station, sourced from Wunderground, meaning any sudden shift in storm intensity or wind speed will alter the outcome [1]. With the hottest month being July and average highs in June sitting just above 80°F, the margin for the temperature to breach the threshold is narrow, making the 90% chance of light rain a critical dependency for the final resolution [2][7].
Methodology
Sports-specific comparison page for Highest temperature in Shanghai on June 30?. 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.
- 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.
- 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 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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