Highest temperature in Shanghai on July 25?

Platform comparison

Market context

Shanghai's highest temperature on 25 July 2026 will be recorded at Pudong International Airport Station and resolved against historical Weather Underground data. The settlement window closes at midday UTC on that date, capturing the full diurnal cycle. Current crowd-implied probability sits at 0%, suggesting either extreme confidence in a specific temperature band or minimal trading activity on this particular contract.

July represents Shanghai's hottest month climatologically, with mean maximum temperatures around 32°C and extremes frequently exceeding 35°C. The city's urban heat island effect and proximity to the East China Sea create volatile conditions; daily highs have ranged from 28°C to 40°C in historical July records at Pudong. Comparable markets on Shanghai summer temperatures typically see probability mass concentrated in the 32–37°C bands, with tail outcomes (sub-28°C or above 39°C) receiving minimal backing. The 0% reading here suggests traders may be awaiting clearer seasonal forecasts or that the market's temperature brackets are misaligned with consensus expectations.

Traders should monitor China Meteorological Administration seasonal outlooks released in June 2026, which typically indicate whether the summer will trend warmer or cooler than climatological norms. El Niño or La Niña conditions in the Pacific will influence East Asian monsoon patterns and thus Shanghai's July heat. Real-time forecasts from late July will sharpen probability estimates, though Weather Underground's historical data feed—the settlement source—occasionally experiences minor reporting delays that could affect resolution timing near the midday cutoff.

Methodology

This page reviews Highest temperature in Shanghai on July 25? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.