Highest temperature in Guangzhou on July 1?

Platform comparison

Market context

On 1 July 2026, the Guangzhou Baiyun International Airport Station will record its peak temperature for the day, a metric that determines the outcome of a prediction market where the crowd currently assigns a 0% probability to any temperature exceeding 35°C. This stark consensus suggests traders believe extreme heat is virtually impossible, yet historical data frames a more nuanced reality. July in Guangzhou is the hottest month of the year, with average highs near 32°C and frequent spikes to 34–35°C. Crucially, the all-time record for the city is 39.1°C, recorded precisely on 1 July 2004, proving that such extreme heat is not just theoretical but has occurred on this specific date.

The value spot for a contrarian trader lies in betting against the 0% implied probability, as the market appears to be ignoring the volatility inherent in tropical summer weather. Traders should monitor real-time weather forecasts and any announcements regarding regional heatwaves or unusual atmospheric pressure systems, as these are the primary catalysts for temperature spikes. Recent reports confirm China experienced its hottest month on record in July, with average temperatures eclipsing previous decades, indicating a broader trend of intensifying heat that could push local readings higher than the consensus expects [3][7]. If a heatwave develops, the 35°C threshold becomes a plausible underdog outcome, offering significant value against the current frontrunner of 32°C.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Guangzhou on July 1? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.