Highest temperature in Shenzhen on July 22?

Platform comparison

Market context

Polymarket is pricing Shenzhen’s 22 July high at **0% YES**, so the contract is treating a qualifying hottest reading at Shenzhen Bao’an International Airport Station as effectively absent or already out of reach, even though the market still settles on the day’s recorded maximum in Celsius via Wunderground. The live object here is the chain-settled position: users hold conditional tokens on Polygon, funded in USDC, and the payoff turns entirely on where the station’s official daily high lands within the market’s temperature bands.

That zero price sits against a climate that normally supports a far higher daytime peak. Shenzhen’s July normals are around **31°C** for the daily high, with **27°C** lows and persistently humid conditions, which is why the market usually trades around whether the day reaches the low-30s rather than whether heat disappears altogether.[2] On a current-weather snapshot, Shenzhen is already warm and humid, with AccuWeather showing **82°F** and a RealFeel of **91°F**, reinforcing that the city is in a typical summer regime rather than a cool anomaly.[1]

For traders, the main catalysts are the final hours before the 12:00 UTC settlement window closes and any sharp shift in cloud cover, rainfall, or coastal winds that could cap the airport station’s afternoon high. Because the market resolves to the station’s observed maximum on Wunderground, not a citywide average, the key dependency is the airport’s own reading through the daytime heating cycle, with late-morning conditions often setting the tone before the local peak is posted.

Sources: 1 · 2

Methodology

This page reviews Highest temperature in Shenzhen on July 22? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.