Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 39°C | 99% |
| 40°C | 1% |
| 32°C or below | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 41°C | 0% |
| 42°C or higher | 0% |
Market context
Shanghai faces its peak summer heat on 15 July 2026, with the market tracking the highest temperature recorded at Pudong International Airport. The crowd-implied probability sits at 0% for the current YES outcome, suggesting traders believe the event will not occur within the specified range, though historical data indicates July is typically the hottest month in the city.
Historical records from Wunderground show Shanghai’s July highs frequently exceed 35°C, with the 2024 peak reaching 38.9°C at Pudong, framing the 0% probability as an outlier against typical summer volatility [1]. Comparable cases from 2022 and 2023 saw temperatures hover between 36°C and 37°C, meaning any resolution range below 35°C would contradict five years of consistent meteorological patterns.
Traders should monitor the China Meteorological Administration’s 72-hour forecast issued on 12 July, which details expected cloud cover and humidity levels that directly influence peak temperatures [2]. A sudden shift in the East Asian monsoon or an incoming typhoon could suppress highs below 30°C, while clear skies and high-pressure systems typically drive readings above 37°C. No major weather announcements have been released yet, but the settlement window closes at 12:00 UTC, leaving little time for late corrections.
[1] Wunderground, “Shanghai Pudong International Airport Station History”, accessed July 2026. [2] China Meteorological Administration, “72-Hour Forecast for Shanghai”, 12 July 2026.
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 Best Prediction Markets 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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets 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 Shanghai on July 15? on Best Prediction Markets UK
Live order book, 0% fees, USDC settlement in seconds.
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