Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
59% | 41% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
59% | 41% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 35°C | 59% |
| 34°C | 39% |
| 36°C | 5% |
| 31°C or below | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C or higher | 0% |
Market context
Beijing will record its peak temperature for 16 July 2026 at the Beijing Capital International Airport Station, with the market settling on the Celsius range containing that value via Wunderground data. The current 0% crowd-implied probability for a specific outcome appears misaligned with historical patterns, as July is typically one of Beijing’s hottest and wettest months, averaging 185mm of rainfall and frequent highs exceeding 30°C[2].
Historical climate data shows Beijing’s average July high reaches 31°C, with extremes often hitting 33–34°C during dry spells, making the frontrunner outcome of 33°C (39% probability) and the next closest 34°C (27%) statistically plausible[1][3]. The 0% probability likely reflects a specific range being incorrectly priced rather than a genuine impossibility, given that over 50% of Beijing’s annual rainfall concentrates in July and August, yet heatwaves still drive temperatures well above 30°C[2][3].
Traders should monitor the daily Wunderground history for ZBAA as the primary settlement source, watching for real-time temperature spikes or sudden rain events that could cap the peak[1]. While no immediate crypto-specific catalysts tie directly to this weather contract, USDC settlement mechanics and BTC/ETH macro volatility may influence liquidity and whale flows into weather markets on btc-prediction.bet, particularly if funding rates shift sharply ahead of the 2026-07-16T12:00:00Z settlement window.
Methodology
This page reads Highest temperature in Beijing on July 16? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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