Pronóstico: Highest temperature in Guangzhou on July 7?

Platform comparison

Market context

Guangzhou’s July 7, 2026, peak temperature is the real-world event this market resolves to, with the settlement based on the highest reading at Guangzhou Baiyun International Airport Station as recorded by Wunderground. Today, Polymarket prices the YES contract at 0%, implying the crowd believes the temperature will not fall within the specified range, despite historical July highs in Guangzhou typically hovering around 32–33°C, with daily peaks rarely dipping below 29°C or exceeding 36°C[2][3]. The market’s current 0% valuation contrasts sharply with comparable outcomes, such as the July 3, 2026, market where a 34°C peak was priced at 27.5%, suggesting traders still assign meaningful probability to temperatures near that band on adjacent dates[1].

Traders should monitor Guangzhou’s weather forecasts for the week of July 7, particularly any announcements of thunderstorms or heavy rain, which are common in early July and could suppress peak temperatures[2]. Recent reports from Xinhua News Agency highlight that Guangzhou has experienced its longest summer since 1961, with July averaging 23.3°C, the highest since 1961, indicating a potential heatwave trend that could elevate temperatures beyond seasonal norms[7]. On-chain mechanics remain straightforward: USDC on Polygon settles conditional tokens, with liquidity pools reflecting the 0% YES price through skewed NO-side demand. Watch Wunderground’s hourly updates for July 7, as the resolution hinges on the single highest temperature recorded at any time on that day.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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