Highest temperature in Guangzhou on July 6?

Platform comparison

Market context

On 6 July 2026, the real-world event at stake is the peak temperature recorded at Guangzhou Baiyun International Airport, a location consistently subjected to extreme subtropical heat during the city’s hottest month. Historical data confirms that daytime highs in July typically range from 32°C to 37°C, with extremes frequently surpassing 38°C and occasionally reaching 39°C, driven by intense sunshine and high humidity levels often exceeding 80% [1][2][5]. Given that the current crowd-implied probability for a specific temperature range is 0%, this figure starkly diverges from the analyst consensus on seasonal norms, which suggests a near-certainty of temperatures well above 30°C, creating a meaningful gap between the prediction market’s pricing and the established climatic reality of the region [3][4].

Traders should monitor the arrival of typhoons or heavy thunderstorm systems, which are common in Guangzhou from July to September and can temporarily suppress peak temperatures despite the prevailing heat [1]. While rainfall is less frequent in July than in earlier months, the threat of sudden downpours remains a critical dependency that could alter the day’s maximum reading, making weather radar updates and official meteorological bulletins essential catalysts to watch [2]. Recent reports highlight that Guangzhou has experienced its longest summer since 1961, underscoring a trend of record-breaking heat that further contradicts the 0% probability line and suggests the market may be mispricing the likelihood of extreme high temperatures [8]. The combination of sustained high humidity and abundant sunshine in July ensures that any significant cooling event would be an anomaly rather than the expected outcome for this settlement window.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.