Highest temperature in Shenzhen on August 4?

Platform comparison

Market context

Polymarket is pricing this Shenzhen airport temperature contract at **0% YES**, which effectively means the market is assigning no weight to any listed outcome right now. On Polymarket, traders hold USDC on Polygon and the contract settles through conditional tokens, so the key practical question is not whether Shenzhen is “hot” in general but which exact daily high appears in the Wunderground record for Shenzhen Bao’an International Airport Station before the noon UTC settlement window closes.

For context, Shenzhen in August is usually a hot, humid, rain-prone city, with typical daytime highs around 31–32°C and frequent showers across the month. Comparable weather guides and forecasts point to maximums clustering in the low 30s rather than extreme spikes, which is consistent with a broad distribution around 31°C, 32°C and 33°C rather than a single runaway print.[3][4][9][18] The market description also matters: settlement uses the highest temperature recorded for the day at the airport station, not a citywide average, so intraday variations, late-morning heating and any brief sunbreaks can decide which bucket wins.

The main catalysts are the live station observations and any forecast updates that shift expectations for the rest of the session. Recent sources show Shenzhen under cloud, light rain showers or patchy rain conditions, with humidity in the high 70s to high 80s, which tends to cap the upside versus a clear-sky midsummer day.[7][8][14][16] Traders should watch the Wunderground history page, the airport station’s reported highs as they post, and any sudden changes from rain bands or thunderstorm timing, because the contract resolves on the recorded maximum, not on the forecast high.[6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on August 4? 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Polymarket Alternative 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.