Pronóstico: Highest temperature in Shanghai on July 23?

Platform comparison

Market context

The Shanghai Pudong International Airport Station high on 23 July is trading at a sharply skewed **0% YES** on Polymarket, with participants funding the contract in **USDC** on **Polygon** and holding conditional tokens that settle against the Wunderground daily high for that station. The market is therefore pricing the day as effectively outside the listed temperature range, rather than simply expressing a view on warm weather in general.

That reading sits against Shanghai’s July climate, where typical highs cluster around **31°C** and rainfall remains common, so the distribution is usually centred well below extreme heat ranges. For a Polymarket user, the key comparison is not whether it is hot by local standards, but whether the airport station prints a peak that lands in the contract’s quoted bins; that is why even a warm midsummer day can still leave the market concentrated at lower outcomes.

The main catalysts are ordinary weather drivers: the strength and position of the East Asian summer monsoon, convective thunderstorms, cloud cover, and any late-breaking tropical system tracking towards the Yangtze Delta. Traders should also watch the Wunderground station feed itself, because settlement is based on the **highest recorded temperature for the full day** at Shanghai Pudong International Airport Station, not a citywide average or an afternoon snapshot.

Sources: 1 · 2

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