Highest temperature in Guangzhou on July 9?

Platform comparison

Market context

Guangzhou is entering its peak summer heatwave period, with July consistently delivering the highest daily temperatures of the year. The market’s current 0% crowd-implied probability for a “YES” outcome suggests traders expect the highest temperature on 9 July 2026 to fall below the resolution threshold, likely under 31°C. However, historical data contradicts this caution: early July in Guangzhou typically sees daily highs clustered between 31°C and 34°C, based on CMA station records[4]. The highest daily average high temperature in July reaches 91°F (32.8°C) on 25 July, with daily highs rarely falling below 85°F (29.4°C) or exceeding 96°F (35.6°C)[1]. Even in 2024, Guangzhou recorded its highest July average temperature since 1961 at 23.2°C, amid widespread heatwaves across southern China[2].

Traders should monitor real-time Wunderground updates for the Baiyun International Airport Station, as the market resolves solely on that source’s recorded maximum[3]. Key catalysts include any official announcements from the China Meteorological Administration regarding heatwave intensification or urban cooling measures, which could shift temperature trajectories. Recent reports note Guangzhou has broken a three-decade heat record, with 235 summer days measured by temperature as of mid-July 2026[8]. If the heatwave persists beyond current projections, temperatures could exceed the threshold, invalidating the 0% probability. Watch for sudden shifts in wind patterns or rainfall, which are the primary dependencies for cooling in this region. No league or sport context applies—this is purely a weather-driven event.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Guangzhou on July 9?. 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.

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.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.