Highest temperature in Shanghai on July 9?

Platform comparison

Market context

The real-world event hinges on the peak temperature recorded at Shanghai Pudong International Airport on 9 July 2026, measured in degrees Celsius by Wunderground. This single data point will determine the market resolution, with the current crowd-implied probability of 0% for the “YES” outcome suggesting traders expect the temperature to fall outside the specified range. Historically, July is Shanghai’s hottest month, with average highs around 87°F (30.6°C) and frequent peaks exceeding 35°C (95°F) during sunny spells[3][5]. Recent records show Pudong temperatures reaching 40.4°C (104.7°F) in summer, indicating the potential for extreme heat that could invalidate low-range predictions[7].

Traders should monitor daily weather forecasts and meteorological announcements, particularly those from the Shanghai Meteorological Bureau, which issue heat advisories when temperatures approach critical thresholds. The BBC forecast for 9 July predicts thundery showers and a gentle breeze, with temperatures around 28°C (82°F), which may suppress peak heat[2]. However, AccuWeather’s July 2026 forecast for Pudong suggests daily highs ranging from 86°F to 97°F (30°C to 36°C), leaving room for significant variability[4]. Programmatically, this market would be approached by scraping Wunderground’s historical data API, cross-referencing with real-time forecasts, and executing conditional orders based on temperature thresholds. Conditional orders triggered by sudden heat spikes or storm delays could capture value before the crowd adjusts.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shanghai on July 9? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 Bot UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.