Highest temperature in Shanghai on August 5?

Platform comparison

Market context

Shanghai’s daytime peak on 5 August will be set by the highest reading at Pudong airport, so the key issue is not just heat, but whether cloud, showers or sea-breeze moderation trim the station’s maximum below the broad city forecast. The crowd is currently pricing the contract at **0% YES**, which looks very loose against model and weather-site guidance that clusters around the low-to-mid 30s Celsius: AccuWeather’s August outlook shows daily highs from **82° to 92°F** and multiple 5 August forecasts sit near **34–35°C**.[1][2][3][4][9]

Historically, Shanghai in August often settles into a hot, humid band rather than an extreme spike, with long-run guides pointing to roughly **31–32°C** daytime highs and very high moisture levels.[10][15][18] That matters because this market resolves to a specific airport station reading, not the broader urban forecast, so small differences in cloud cover or thunderstorm timing can shift the top temperature by a degree or two. In cross-platform terms, the sportsbook-style weather projections and model-based pages imply a far warmer outcome than the current prediction-market line, while the market itself has almost no implied probability on any positive temperature bucket.[1][2][3][4][9]

Traders should watch the hourly Shanghai forecasts and any short-notice thunderstorm or rain updates through the day, because the decisive catalyst will be whether afternoon heating is allowed to run before convection or thicker cloud caps the maximum. The resolution window closes at **12:00 UTC**, so the relevant datapoint is the later-day airport observation sequence rather than the early-morning temperature; Wunderground will be the settlement source, and its daily history page for **Shanghai Pudong International Airport Station** is the reference to monitor for the eventual recorded high.[9]

Sources: 1 · 2 · 3 · 4 · 5

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 UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 UK. 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.

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 Best Prediction Markets UK 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.