Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
80% | 20% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
80% | 20% | 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 |
|---|---|
| 36°C | 80% |
| 37°C | 17% |
| 38°C | 2% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 39°C or higher | 0% |
Market context
Shanghai’s July heat is relentless, with daytime highs routinely climbing above 30°C and frequently exceeding 35°C at the Pudong International Airport. Historical data confirms that daily peaks in early July typically range between 84°F and 88°F (roughly 29°C to 31°C), rarely dipping below 75°F or surging past 95°F [1]. Other markets tracking this event suggest the most probable outcome lies between 33°C and 35°C, with 35°C currently the leading forecast at 39% probability [2]. Overnight lows hover around 25–27°C, driven by the city’s subtropical monsoon climate [3]. The current crowd-implied probability of 0% for any outcome above a specific threshold appears inconsistent with these established patterns, as temperatures consistently breach 30°C during this period [7].
Traders should monitor real-time updates from Wunderground, the official resolution source, for any sudden shifts in solar radiation or wind speed that could alter peak temperatures [1]. AccuWeather’s July 2026 forecast indicates daily highs ranging from 86°F to 97°F (30°C to 36°C), suggesting a high likelihood of temperatures surpassing 35°C [4]. Key dependencies include the timing of cloud cover and the intensity of shortwave solar energy, which is gradually increasing through July [1]. Any announcement regarding unusual weather systems, such as typhoons or heat domes, could significantly impact the final reading. Recent data from the National Weather Service for ZSPD provides the most current conditions, though Wunderground remains the definitive source for settlement [5].
Methodology
Sports-specific comparison page for Highest temperature in Shanghai on July 8?. 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.
- 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.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- 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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