Highest temperature in Guangzhou on August 4?

Platform comparison

Market context

Guangzhou Baiyun International Airport is set for a hot, humid day, with recent forecasts clustering the city’s August highs around the low 30s Celsius and some models pushing the afternoon peak to 32–33°C. The crowd’s 0% YES price is therefore not a statement that heat is impossible; it more likely reflects the structure of the market, which pays on the *highest recorded airport temperature* hitting the relevant range by the settlement window, not simply on the city feeling warm.[1][5][11]

Historically, August in Guangzhou is one of the hottest parts of the year, with average highs around 31–33°C and frequent rain rather than prolonged cool spells. That matters because short, heavy showers can cap the day’s maximum at the airport even when surrounding districts remain oppressive, while a brief break in cloud cover can still allow a spike above forecasts. Comparable August climatology also shows that 35°C-plus readings are possible, but they are not the base case, so traders should read any probability near zero as vulnerable if a hotter-than-forecast afternoon develops.[10][12][14][19]

The main catalysts are the next official forecast updates, the timing and intensity of afternoon convection, and whether Baiyun Airport’s observation line records a brief heat spike before rain arrives. Current airport observations already show warm, humid conditions with light easterly flow, which supports a decent ceiling if sunshine persists, but incoming showers would quickly drag the top reading lower.[6][17] A fresh city bulletin has Guangzhou at 25–31°C with rain, reinforcing the market’s dependence on the exact airport maximum rather than the broader city forecast.[8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Guangzhou on August 4?. 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.

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.

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.