Highest temperature in Shanghai on July 25?

Platform comparison

Market context

Shanghai's weather on 25 July 2026 will be shaped by the city's deep summer monsoon pattern, with the East Asian summer monsoon typically at peak intensity during late July. The settlement window closes at midday local time, capturing the full diurnal temperature cycle. Current crowd pricing at 0% suggests traders are either awaiting clearer atmospheric data or treating this as a baseline reference point before seasonal forecasts solidify.

Historical Shanghai temperature records for late July show consistent clustering in the 32–37°C range, with extreme readings occasionally breaching 38°C during particularly intense heat waves. The city's urban heat island effect, amplified by dense development around Pudong International Airport, typically elevates recorded maxima 1–2°C above surrounding rural areas. July 2023 saw Shanghai record 40.9°C, demonstrating that outlier highs remain within the realm of possibility, though such events require specific atmospheric blocking patterns or tropical cyclone proximity.

Traders monitoring this market should track tropical cyclone activity in the Western Pacific during early-to-mid July 2026, as storm systems can either suppress temperatures through cloud cover or, conversely, drive extreme heat through pre-storm pressure dynamics. China's meteorological authority releases 10-day forecasts roughly weekly; the first actionable medium-range guidance for late July will emerge around mid-July. Humidity levels and any upper-level ridge positioning over East Asia will be critical signals, as these determine whether monsoon moisture dominates or drier continental air masses prevail.

Methodology

We track Highest temperature in Shanghai on July 25? 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 Prediction Today. 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.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.