Pronóstico: Highest temperature in Shenzhen on July 25?

Platform comparison

Market context

Shenzhen's summer heat on 25 July 2026 will be measured against historical records from Bao'an International Airport, the official weather station for the city. The market currently shows 0% implied probability across all temperature ranges, suggesting either sparse liquidity or a technical settlement issue rather than genuine uncertainty about whether temperatures will be recorded that day. Traders are pricing conditional tokens on Polygon that will resolve based on Wunderground's historical weather data, with USDC settlement once the highest daily temperature is confirmed and falls into one of the predetermined brackets.

July represents peak summer in Shenzhen, with average highs around 32–33°C and extreme readings occasionally exceeding 36°C. The city's coastal location and subtropical climate create consistent heat patterns, though typhoon activity can occasionally suppress temperatures or bring sudden shifts. Historical data from comparable July dates at Bao'an shows the 32–35°C range has been most frequent over the past two decades, with readings above 35°C occurring roughly once every three to four years during particularly intense heat waves.

The key variable traders should monitor is typhoon forecasting for late July 2026, as tropical systems approaching southern China can dramatically alter temperature trajectories within days. The China Meteorological Administration typically issues extended outlooks by mid-July, and any official heat warnings or severe weather alerts would signal material shifts in probability distributions. Additionally, the settlement mechanism depends entirely on Wunderground's historical archive remaining accessible and accurate—traders should verify the data source's reliability before committing capital to any single temperature bracket.

Methodology

We track Pronóstico: Highest temperature in Shenzhen on July 25? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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 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.