Highest temperature in Shenzhen on July 6?

Platform comparison

Market context

On 6 July 2026, the Shenzhen Bao'an International Airport Station will record its peak temperature for the day, a metric that determines the outcome of a prediction market where the crowd currently assigns zero per cent probability to a "yes" result. This implies the market believes the temperature will not fall within the specified range, despite historical data showing July as Shenzhen’s hottest month, with average highs near 32°C and frequent peaks reaching 33–35°C in early July[1][8].

Historical patterns frame this zero probability as highly questionable. In early July, Shenzhen’s mean daily maximum historically runs between 33°C and 35°C, with 34°C sitting squarely in the centre of that range[8]. Comparable cases from recent years show temperatures exceeding 35°C across South China, with some locales reaching 37–39°C during heatwaves[5]. Even a recent Polymarket contract on 3 July resolved negatively, yet the underlying weather data confirms July consistently delivers the year’s highest temperatures, averaging 89°F (32°C) with highs up to 90°F[1][3].

Traders should monitor the subtropical high pressure system and incoming typhoon activity, which drive the 340 mm of monthly rainfall and 17 rainy days that can suppress peak temperatures[1]. A sudden shift in the monsoon or a typhoon track could lower temperatures below the range, but the absence of such events typically allows heat to build. Recent reports from CCTV note record-breaking temperatures in China, with exposed sand reaching extreme levels, suggesting ambient conditions remain conducive to high readings[4]. Analysts at Lines.com confirm that 34°C is the historical median for early July, making the current zero probability a significant divergence from consensus[8].

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 Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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

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.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.