Highest temperature in Shanghai on July 15?

Platform comparison

Market context

Shanghai Pudong International Airport is currently experiencing a maximum temperature of 35°C today, with a 70% probability of rain and broken cloud cover obscuring full sunshine [1][2]. The prediction market for the highest temperature on 15 July 2026 carries a crowd-implied probability of 0% for the YES outcome, suggesting traders believe the peak heat will fall outside the specific range defined in the contract. This zero probability is stark when compared to historical mid-July data for the region, where temperatures frequently exceed 35°C, indicating a potential divergence between current market sentiment and typical seasonal climatology.

Historical records for Shanghai in mid-July show that temperatures often reach 36°C or higher, making a 0% implied probability for a standard high-temperature range statistically unusual unless the range is set exceptionally low or high. Comparable cases from recent years demonstrate that the city regularly experiences heatwaves during this period, with the Weather Network noting current highs of 36°C as a plausible ceiling for the day [1]. Traders should scrutinise whether the contract range is misaligned with these established norms, as the current odds imply an event that contradicts the typical thermal behaviour of the Pudong station.

Key catalysts for this market include the official release of hourly temperature data from Wunderground at the settlement window, which will confirm the precise peak recorded at the airport station. Analysts should monitor any sudden shifts in cloud cover or rain intensity, as the current 70% rain probability could suppress temperatures below the contract threshold if the downpour is sustained [1]. No specific weather announcements are pending beyond the standard daily forecast, but the dependency on the Wunderground history page means the resolution will hinge entirely on the single highest reading logged before 12:00 UTC on the settlement date [1].

Sources: 1 · 2

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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. 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.

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.