Highest temperature in Shanghai on July 28?

Platform comparison

Market context

Shanghai's peak temperature on 28 July 2026 will be recorded at Pudong International Airport Station and resolved against historical weather data. The market currently shows 0% implied probability across all temperature ranges, suggesting either a technical issue with the odds display or extreme uncertainty about which bracket will ultimately contain the settlement value.

July represents the height of Shanghai's summer season, with average daily highs around 32–34°C and frequent readings exceeding 35°C during heat waves. Historical records from Pudong station show that temperatures above 38°C occur in roughly one-third of Julys, whilst readings below 28°C are exceptionally rare for this month. The 0% crowd probability across all ranges is anomalous given that one outcome must occur; this disconnect suggests traders should examine whether the market has properly populated its full range of temperature brackets or whether liquidity constraints are distorting the display.

The key variable for late July 2026 will be the position of the Western Pacific subtropical high-pressure system and any tropical cyclone activity in the region. Shanghai's summer weather is heavily influenced by monsoon patterns and occasional typhoon remnants that can either suppress temperatures through cloud cover and rainfall or intensify heat through atmospheric compression. Traders should monitor seasonal forecasts from China's meteorological authority and track any tropical systems developing in the Western Pacific during early-to-mid July, as these can materially shift temperature outcomes within a 10-day window.

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 Who Will Win 2026, 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 Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Who Will Win 2026 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.