Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
57% | 43% | 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 |
|---|---|
| 33°C | 57% |
| 34°C | 34% |
| 35°C | 3% |
| 36°C | 1% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
Shanghai's summer climate in late July presents consistently hot conditions, with the city's monsoon season typically delivering temperatures in the high 30s Celsius. The settlement window closes at midday on 28 July 2026, meaning only morning and early afternoon readings will count towards resolution. Historical data from Shanghai Pudong International Airport shows July averages peak around 32–35°C, though extreme heat waves have occasionally pushed readings above 38°C during particularly intense pressure systems.
The 0% crowd probability suggests traders are either uncertain about the specific temperature thresholds offered or expect a relatively moderate day compared to Shanghai's typical late-July extremes. Comparable years provide useful benchmarks: July 2022 saw multiple days exceeding 35°C at Pudong, whilst July 2019 remained closer to 33–34°C despite similar seasonal positioning. The absence of any probability mass indicates the market may lack sufficient liquidity or clarity on the available temperature bands.
Traders monitoring this market should track weather forecasts from late July 2026, particularly any alerts from China's meteorological authority regarding high-pressure systems or heat warnings affecting the Yangtze River Delta region. Wunderground's historical data feed will be the sole arbiter of settlement, so familiarity with that station's measurement protocols is essential. The midday cutoff time is critical—afternoon thunderstorms, common in Shanghai's monsoon season, could suppress peak temperatures if they arrive before noon.
Methodology
Sports-specific comparison page for Highest temperature in Shanghai on July 28?. 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
- 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.
- 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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