Highest temperature in Chengdu on July 20?

Platform comparison

Market context

Chengdu’s July climate typically sees afternoon highs reach 33°C, with sustained extreme heat uncommon despite the region’s humid subtropical conditions[2]. Historical data shows that temperatures exceeding 35°C are rare, and the 24-hour daily mean in July sits around 25°C, making a 0% crowd-implied probability for any specific high range plausible if the market expects conditions to stay near the seasonal average[2]. The current frontrunner on the broader Polymarket listing is 38°C at 100%, suggesting a divergence in how different platforms interpret the same weather event, though this specific market’s 0% YES may reflect a bet that the peak will fall below the threshold implied by the “YES” outcome[1].

Traders should monitor the daily Wunderground history for the Chengdu Shuangliu International Airport Station (ZUUU) as the official resolution source, watching for any sudden shifts in forecasted highs ahead of the 20 July 2026 settlement window[1]. Key catalysts include real-time weather updates from local meteorological services and travel advisories noting the rainy season, which often brings cloud cover and precipitation that suppress peak temperatures[3]. Since the market resolves based on the highest temperature recorded at any time on that day, even a brief heat spike could alter outcomes, making hourly Wunderground checks critical as the date approaches.

Sources: 1 · 2 · 3

Methodology

Sports-specific comparison page for Highest temperature in Chengdu on July 20?. 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 or Manifold.

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.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

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.