Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 36°C | 99% |
| 37°C | 1% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 38°C | 0% |
| 39°C or higher | 0% |
Market context
Beijing Capital International Airport’s peak temperature on 3 August is likely to be set by a narrow daytime window rather than an all-day heat build-up, because August in Beijing is typically hot, humid and interruption-prone, with showers or thunderstorms often cutting the top off the daily maximum. Current forecast material for early August points to highs around 33–37°C for Beijing, while city-level official forecasts for 2–3 August show 32°C with thunderstorms on 3 August, implying that a brief clearing or delayed convection is the main route to a higher reading at the airport station.[2][3][5]
For a market at 0% YES, the practical read-through is that the listed temperature band is probably well above what the crowd thinks the airport will actually print, not that a hot outcome is impossible. Beijing’s August climatology sits around 30–31°C average highs, with some long-range sources still showing 30–32°C norms and occasional days in the mid-30s, so the distribution is broad enough that a single short-lived spike can matter if rain arrives late.[6][8][14][16] Programmatically, a trader would track the Wunderground daily history page, scrape the “highest temperature” field, and update a live probability model against nearby forecast grids rather than relying on one headline max.[5]
The key catalysts are the timing and intensity of convection, cloud cover and any shift in the regional high-pressure pattern over northern China. Near-term guidance from forecast providers and city bulletins suggests thunderstorm risk remains in play for Beijing, which can suppress the daily extreme by keeping the boundary layer mixed and cooler; if showers are delayed, the airport can still see a sharper midday or early-afternoon peak.[3][5][7] For automation, that means watching hourly forecast revisions, airport observations and precipitation timing, then comparing them with the settlement source’s station-specific reading rather than the broader Beijing forecast.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Review UK, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Beijing on August 3? on Polymarket Review UK
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