Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Best Prediction Markets.
Active sub-markets
Market context
Shenzhen's weather on 9 June 2026 will be measured against historical temperature records from Bao'an International Airport, the city's primary meteorological station. Early June in Shenzhen typically falls within the pre-monsoon transition period, when daily highs range between 28–32°C, though extreme heat events can push temperatures several degrees higher. The 0% crowd probability suggests traders are either awaiting resolution data or treating this as a placeholder market with limited initial liquidity.
Historical context from Shenzhen's climate records shows June temperatures have occasionally exceeded 35°C during heat waves, though such events remain relatively infrequent. The city's coastal location and subtropical climate create variability; sea-breeze patterns can moderate afternoon peaks, whilst urban heat-island effects around the airport may elevate readings. Comparable markets on other Chinese cities' June temperatures have typically seen probabilities distributed across multiple temperature bands rather than concentrated at zero, indicating this market's current state reflects sparse trading activity rather than genuine consensus that extreme heat is impossible.
Traders monitoring this contract should track weather forecasts released in the week preceding 9 June, particularly any alerts from China's meteorological authority regarding heat warnings or monsoon onset timing. Bao'an Airport's historical data, accessible via Wunderground's archive, provides the settlement baseline; any discrepancies between forecast models and actual recorded highs will determine which temperature band captures the day's maximum. Current odds divergence across platforms likely reflects the market's early stage rather than substantive disagreement on meteorological likelihood.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, 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
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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 it cost to trade on Best Prediction Markets?
- Zero. Best Prediction Markets routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Best Prediction Markets triggers a quick verification flow that finishes in minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Highest temperature in Shenzhen on June 9? on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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