Pronóstico: Highest temperature in Shenzhen on August 8?

Platform comparison

Market context

Polymarket prices this Shenzhen heat contract at **0% YES**, which means the market is currently assigning no chance that the Shenzhen Bao’an International Airport station’s top reading falls into the specified Celsius range. The settlement will depend on the **highest temperature** in Weather Underground’s **Daily Observations** table, not the broader “Day High & Low” summary, so the live intraday peak matters more than the headline forecast figure.[10]

For context, Shenzhen is in its hottest stretch of the year, and current forecasts point to a high near **97°F** with hourly readings climbing through the afternoon before a possible evening thunderstorm.[2][3] Wunderground’s station page also showed **96°F** and “nearly the same as yesterday” early on 8 August, which places the market in the zone where a late-day uptick could decide whether the observed maximum stays within the relevant band.[10] Compared with the broader August climatology, multiple forecast sources describe Shenzhen as hot and humid, with typical highs in the low-to-mid 30s Celsius.[1][14][18]

A trader watching the contract should focus on any update to the airport station’s observations before the settlement window closes at **12:00 UTC**, because the on-chain position is built from **USDC** and represented through **conditional tokens** on **Polygon**, but the resolution still hinges on the final Weather Underground data point. The key catalyst is not a scheduled announcement, but the timing of the day’s heat peak and any thunderstorm-driven drop after it; AccuWeather’s hourly profile suggests the maximum may arrive mid-afternoon, while precipitation risk rises later in the day.[2][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Pronóstico: Highest temperature in Shenzhen on August 8? 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 Polymarket Qué Es, 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 Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Polymarket Qué Es 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.