Highest temperature in Shanghai on July 1?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded on 1 July 2026 at Shanghai Pudong International Airport, measured in degrees Celsius. Historical data confirms July is Shanghai’s hottest month, with average highs around 31°C (87°F) and frequent peaks exceeding 35°C (95°F) during sunny spells[1][3]. Daily highs in July rarely fall below 24°C (75°F) and seldom exceed 35°C (95°F), making a 0% YES probability for any temperature range below typical summer extremes statistically sound given the climate norms[3][6].

Traders should monitor the upcoming 24-hour weather forecast for Shanghai Pudong, which currently predicts daily highs between 27°C and 34°C (80°F–93°F) for early July 2026[8]. Key catalysts include any sudden shifts in monsoon patterns or heatwave announcements from China’s National Meteorological Centre, as these directly influence peak temperatures. The settlement relies exclusively on Wunderground’s recorded data for that specific day, so traders must verify the source’s real-time updates before the 2026-07-01T12:00:00Z deadline[9]. On Polymarket, this contract trades using USDC on the Polygon network via conditional tokens, where the 0% price reflects the market’s confidence that temperatures will stay within the expected summer range.

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