Highest temperature in Shenzhen on July 24?

Platform comparison

Market context

Polymarket is pricing this Shenzhen airport temperature contract at **0% YES**, which means traders are effectively assigning no probability that the day’s recorded high lands in the market’s YES range. On the ground, the event is simply the highest temperature at Shenzhen Bao'an International Airport on 24 July, as reported in USDC-settled conditional tokens on Polygon, with the outcome later resolved against Wunderground’s daily station history.

For context, Shenzhen in July sits in a **humid subtropical** regime, with warm air, high humidity and a pronounced wet season from May to September; June and July are usually the rainiest months. Typical July highs are around **32°C**, and heavy rainfall is common, which can cap daytime heating even when the broader climate is hot. That makes the market’s 0% price less a statement about “cold” weather and more about how narrowly the contract’s temperature bands are being viewed relative to the station’s expected distribution.

A trader watching this market should focus on the same inputs the station does: rainfall timing, cloud cover, and any short-term forecast updates for Shenzhen around the airport. On a warm, humid coastal city day, a few hours of sun or a convective downpour can move the maximum by several degrees, so the key catalyst is the local hourly forecast rather than the season-wide average. Because the settlement source is a specific airport station, not citywide observations, the contract will track that microclimate rather than general Shenzhen weather.

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Methodology

This page reviews Highest temperature in Shenzhen on July 24? 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.