Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
97% | 3% | 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 |
|---|---|
| 31°C | 97% |
| 32°C | 3% |
| 23°C or below | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 33°C or higher | 0% |
Market context
Shenzhen’s early-August heat is usually intense and fairly stable, with average highs clustered around 31–32°C and some guides putting the normal August high near 32°C or 90°F.[2][7][10] For 1 August specifically, historical guides show average highs around 90–97°F, which means the market only needs a routine hot-day outcome rather than an exceptional spike to clear the common upper ranges.[1][5]
That said, the crowd’s 0% yes price looks anchored to the fact that the settlement is tied to the **single highest reading** at Shenzhen Bao’an International Airport Station, not the day’s average or a citywide forecast.[16] Comparable August climatology also shows meaningful upside risk: one source cites a Shenzhen August record high of 103°F in 2017, while another notes daily highs can occasionally reach 93°F or more even in a typical August.[8][6] In other words, the relevant question is not whether Shenzhen is hot in August, but whether the airport station prints a genuinely elevated peak on the day.
For traders, the main catalysts are the morning-to-afternoon forecast revisions, any monsoon or thunderstorm timing, and whether cloud cover or rain suppresses the daytime maximum below the usual low-30s Celsius range.[5][10][11] The market resolves off Wunderground’s daily history page for ZGSZ, so late shifts in the station data matter more than broader Shenzhen forecasts or surrounding-area temperatures.[16] With the settlement window ending at 12:00:00Z, the critical period is the local afternoon heat peak, when the day’s maximum is normally set.
Methodology
Sports-specific comparison page for Highest temperature in Shenzhen on August 1?. 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.
- 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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