Pronóstico: Highest temperature in Shenzhen on July 8?

Platform comparison

Market context

The underlying real-world event is whether Shenzhen Bao'an International Airport will record a peak temperature of 31°C or higher on 8 July 2026, a threshold that currently carries a 0% implied probability of being hit on Polymarket. This pricing reflects the market’s view that the day will likely stay below that mark, despite July being Shenzhen’s hottest month historically, with average daily highs around 32°C and frequent spikes above 33°C in the Pearl River Delta region[1][3].

Historical data shows that while 31°C is a common benchmark in Shenzhen summers, extreme heat events are often disrupted by subtropical highs and typhoon-driven rainfall, which can suppress peak temperatures on specific days[1]. Last year, China recorded its hottest July on record, with temperatures surging past 89°F in several regions, suggesting that 2026 could see similar volatility, though local weather patterns in Bao'an may still keep the 8th below the threshold[8][9].

Traders should monitor the China Meteorological Administration’s weekly forecasts for Guangdong, particularly any updates on typhoon activity or heavy shower schedules that could lower daytime peaks, as these are the primary catalysts for temperature suppression[1]. Recent reports from CCTV confirm that extreme heat has persisted across southern China since June, but the upcoming weather model runs for the Pearl River Delta will be critical in determining whether the 8th breaks the 31°C barrier or remains within the cooler range[5]. On-chain, this contract settles via USDC on Polygon using conditional tokens, with the final resolution sourced from Wunderground’s official daily record for Bao'an Airport[7].

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 Polymarket Argentina, 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 Polymarket Argentina. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

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.