Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 | 100% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
On 8 July 2026, the real-world event at the centre of this market is the highest temperature recorded at Shenzhen Bao'an International Airport, measured in degrees Celsius and verified by Wunderground. In prediction markets, a YES share pays out if the temperature falls within the specified range (here, 31°C), while a NO share pays out if it does not. The current crowd-implied probability of 0% for YES suggests traders believe 31°C will not be the peak, despite climatology pointing elsewhere.
Historical data frames this probability sharply: July is Shenzhen’s hottest month, with an average high of 89°F (31.7°C) at the airport, making 31°C a below-normal outcome rather than an anomaly [4][5]. Recent markets show similar tension; on 6 July, trader consensus clustered tightly around 30–31°C, with 29°C already confirmed as the peak for that day [1]. This pattern indicates that while 31°C is climatologically typical, short-term variability—such as the mostly cloudy conditions forecast for 8 July with temperatures near 88°F—may suppress the peak below the threshold [6].
Traders should monitor daily weather updates from the National Weather Service and Wunderground, as cloud cover and rain periods can significantly lower maximum temperatures [3][6]. The forecast for 8 July notes mostly cloudy skies with periods of rain overnight, which could keep highs below 31°C, while 9 July promises morning thunderstorms that may further disrupt heat accumulation [6]. No major policy announcements or schedules are expected to influence temperature directly, so the primary dependency remains on real-time meteorological data. The settlement window ends at 12:00 UTC on 8 July, meaning only data up to that point will resolve the market.
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 Prediction Market 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.
- 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 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 Prediction Market 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 Shenzhen on July 8? on Prediction Market UK
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