Highest temperature in Shanghai on July 6?

Platform comparison

Market context

On 6 July 2026, the Shanghai Pudong International Airport Station will record its peak temperature for the day, a real-world event that determines the outcome of a prediction market where the crowd currently assigns zero per cent probability to the “YES” outcome. This stark divergence suggests traders are either misreading the historical data or reacting to an unverified signal, as the market resolves based on the highest temperature in degrees Celsius recorded at any time on that date, sourced from Wunderground.

Historical patterns frame this zero probability as highly questionable. Average July highs at Pudong climb from 84°F to 88°F, rarely dipping below 75°F or exceeding 95°F, with the month’s peak average reaching 88°F [1]. Even in June 2026, daily highs hovered around 91°F, indicating that temperatures in early July are consistently well above the thresholds that would trigger a “YES” resolution in most temperature-range contracts [4]. The current implied probability ignores this baseline, creating a meaningful gap between sportsbook lines, which typically respect climatic norms, and the prediction-market consensus.

Traders should monitor real-time weather updates and any sudden shifts in atmospheric conditions, such as the increasing wind speeds and solar energy noted for early July, which can amplify peak temperatures [1]. While no specific announcement has yet altered the forecast, the current drizzle and gentle breeze observed at nearby Hongqiao Airport may clear by midday, allowing temperatures to rise toward the 90°F range [2]. A trader watching Wunderground’s live data for ZSPD will find the catalyst for divergence: if the day’s high exceeds the range implied by the zero probability, the market will correct sharply, reflecting the analyst consensus that early July in Shanghai is reliably hot.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shanghai on July 6? 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

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

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.