Highest temperature in Shenzhen on July 10?

Platform comparison

Market context

The real-world event in question is the highest temperature recorded at Shenzhen Bao'an International Airport on 10 July 2026, measured in degrees Celsius. Historical data confirms July is the hottest month for the region, with average highs reaching 30.4°C and summer temperatures typically spanning 26°C to 32°C amid hot, humid conditions prone to typhoons[3][6][8]. Current crowd-implied probability of 0% for a specific low outcome diverges sharply from Polymarket data, where the frontrunner is 33°C at 41%, followed by 34°C at 23%, indicating a collective belief in significantly higher heat than the zero-probability line suggests[2].

Traders should monitor hourly weather forecasts and precipitation schedules, as recent models predict light rain showers and partly cloudy skies for Friday morning, which could temporarily suppress peak temperatures[9]. The settlement relies on Wunderground data for the Bao'an station, making real-time updates from that source critical for validating the final resolution against the 33°C consensus[2]. While AccuWeather notes an average June high of 32°C, the early July average of 30.4°C suggests a slight seasonal dip, yet the market's heavy weighting on 33°C implies traders anticipate a heatwave exceeding typical norms[1][8]. No sportsbook lines are currently available for this specific weather contract, leaving the prediction market as the primary venue for odds comparison.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on July 10? 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

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

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.

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.

Do I need to KYC for this market?

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