توقع: Highest temperature in Shanghai on August 21?

Platform comparison

Market context

Shanghai's weather in late August sits firmly within the city's summer monsoon season, when daily highs routinely exceed 32°C and humidity levels remain oppressive. The 21st falls during a period when thermal conditions are typically near their annual peak, though tropical cyclone activity across the Western Pacific can introduce volatility. Historical August data from Shanghai Pudong International Airport shows that temperatures in the 33–35°C range dominate the latter half of the month, with readings above 36°C occurring in roughly one-third of years depending on atmospheric patterns and any lingering effects from preceding weather systems.

The 0% crowd probability reflects either extreme confidence in a specific temperature ceiling or potential confusion around the market's resolution mechanics. Weather Underground's Daily Observations table—the designated primary source—occasionally records readings that differ from headline "Day High & Low" figures, particularly during rapid temperature swings or when peak readings occur outside standard observation windows. Traders should verify the exact station methodology and timing, as Shanghai Pudong's automated systems may capture intra-day peaks that differ from manual summaries. Any significant tropical cyclone approach in the week preceding 21 August could suppress temperatures substantially, whilst high-pressure systems would push readings toward the upper end of the seasonal range. Current seasonal forecasts and real-time atmospheric indices will be critical inputs as the settlement window approaches.

Methodology

Football-specific comparison page for توقع: Highest temperature in Shanghai on August 21?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.