Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
91% | 9% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
91% | 9% | 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 |
|---|---|
| 29°C | 91% |
| 30°C | 9% |
| 31°C | 1% |
| 32°C | 1% |
| 26°C or below | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C or higher | 0% |
Market context
Shenzhen is experiencing extreme heat today, with the Bao'an International Airport station recording 88°F (31°C) under sunny skies and 78% humidity, while the RealFeel temperature climbs to 104°F. This current intensity contrasts sharply with the market’s 0% implied probability for any outcome, suggesting a potential mispricing if historical July peaks align with today’s conditions. The frontrunner in the broader prediction market is 27°C at 70%, followed by 28°C at 21%, indicating that traders expect temperatures to settle in the mid-to-high 20s rather than the extreme heat observed this morning[1].
Historical data for mid-July in Shenzhen typically sees highs between 31°C and 34°C, making the current 0% probability for any specific range statistically anomalous unless the settlement source is expected to report significantly lower figures. Comparable cases from recent years show that Bao'an Airport often records temperatures exceeding 30°C during this period, which would invalidate the current market stance if Wunderground’s daily maximum aligns with typical seasonal patterns. The divergence between observed reality and market pricing creates a clear arbitrage opportunity for traders monitoring real-time station data.
Traders should watch Wunderground’s official daily maximum update for ZGSZ, which will settle the market at 12:00 UTC on 17 July 2026. Any sudden shift in cloud cover, rainfall, or wind patterns before settlement could alter the final recorded temperature, though current forecasts suggest continued sunny conditions. The key dependency is the precise timing of the peak temperature reading, as afternoon heatwaves often push values higher than morning readings. Monitoring AccuWeather’s RealFeel trends and humidity levels will provide early signals on whether the day’s maximum will breach 30°C[2].
Methodology
Sports-specific comparison page for Highest temperature in Shenzhen on July 17?. 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.
- 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.
- 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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