Highest temperature in Shanghai on July 1?

Platform comparison

Market context

Shanghai Pudong International Airport will record its peak daily temperature on 1 July 2026, with the market resolving to the Celsius range containing that highest reading. The current crowd-implied probability of 0% for the “YES” outcome suggests traders view a specific temperature threshold as virtually impossible, yet historical data indicates July is the hottest month, averaging highs near 35°C (95°F) during sunny spells[1][3]. Programmatic traders should note that July daily highs typically climb from 84°F to 88°F, making any single-day spike above 35°C plausible but not guaranteed[5].

A power-user evaluating conditional orders must monitor real-time meteorological feeds from Wunderground, the official resolution source, and watch for sudden shifts in cloud cover or humidity that could suppress temperatures below expected ranges[6]. Recent forecasts for July 2026 show daily highs ranging between 80°F and 93°F, with overnight lows staying warm between 74°F and 82°F, reinforcing the likelihood of a high near 35°C rather than extreme outliers[6]. Traders should also track any regional weather advisories or air-quality alerts that might correlate with temperature anomalies, as these dependencies often influence settlement outcomes in weather-based prediction markets.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on July 1? 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 Polymarket App 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

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.

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