Highest temperature in Shenzhen on July 28?

Platform comparison

Market context

Shenzhen will experience peak summer heat on 28 July 2026, with the highest temperature recorded at Bao'an International Airport Station determining the settlement outcome. July represents the tail end of Shenzhen's monsoon season, typically the hottest and most humid month of the year, with historical highs regularly exceeding 34°C.

Shenzhen's July temperatures have shown consistent patterns over recent decades. Between 2015 and 2024, daily highs in late July averaged 32–34°C, with extremes reaching 35–36°C during particularly intense heat waves. The 0% crowd probability suggests traders are either awaiting clearer seasonal forecasts or treating this as a placeholder pending meteorological data closer to the settlement date. Comparable prediction markets on Chinese summer temperatures typically see meaningful probability shifts only 7–10 days before the event, when ensemble weather models converge on more reliable predictions.

Traders should monitor tropical cyclone activity in the South China Sea during early-to-mid July 2026, as monsoon troughs can temporarily suppress daytime highs. The China Meteorological Administration typically issues extended outlooks in mid-July that provide guidance on whether regional heat patterns will persist or weaken. Sea surface temperatures in the Taiwan Strait and Pearl River Delta will also influence atmospheric stability; warmer waters tend to enhance convection and cloud cover, potentially capping maximum temperatures. Wunderground's historical data for Bao'an has proven reliable for settlement purposes, though traders should verify that the station's instrumentation and location remain unchanged from previous years.

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.

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.