Highest temperature in Shenzhen on August 16?

Platform comparison

Market context

On 16 August 2026, the highest temperature recorded at Shenzhen Bao'an International Airport will fall into one of several defined ranges. The resolution hinges on Weather Underground's Daily Observations table—the granular, station-level dataset rather than the rounded summary figures displayed elsewhere on the platform. This distinction matters for edge cases where intraday peaks might differ by tenths of a degree from headline highs. Traders automating settlement checks should query the specific table endpoint and timestamp the observation window to account for any timezone handling between UTC and China Standard Time.

August in Shenzhen typically sees daily highs between 32–35°C, with occasional peaks above 36°C during heat waves. Historical data from the same station shows that extreme readings (above 38°C) occur roughly once every three to five years during the summer months, usually driven by persistent high-pressure systems stalling over southern China. The current 0% crowd probability suggests the market may be pricing in a specific temperature ceiling, or reflects low liquidity rather than genuine conviction about the forecast range.

Traders should monitor China Meteorological Administration forecasts released in early August, which typically provide 10–14 day outlooks with reasonable skill for maximum temperatures. Tropical cyclone activity in the Western Pacific during mid-August could suppress temperatures if a system approaches the region, though Shenzhen's coastal position makes direct impacts less common than inland areas. Real-time monitoring of upper-air patterns and sea-surface temperatures in late July will signal whether August 16 falls within a normal or anomalous heat regime.

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 Kalshi Fees, 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

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 Kalshi Fees. 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'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 Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.