Highest temperature in Shenzhen on July 13?

Platform comparison

Market context

Shenzhen is set to experience its peak summer heat today, with the highest temperature at Bao'an International Airport determining the outcome of this weather contract. Historical data confirms July is the hottest month at this station, typically reaching an average high of 32°C (89°F), while recent global trends show July 2024 set new temperature records with maximum daily climbs exceeding 38°C in many locations[2][5]. The current 0% crowd-implied probability for a specific outcome suggests traders are betting against an extreme outlier, as typical July highs in Shenzhen rarely breach the 35°C threshold required for many high-range settlements, though heatwaves have pushed local maxima higher in past years.

Traders should monitor real-time hourly feeds from AccuWeather and the National Weather Service for ZGSZ, which currently report temperatures around 30°C with a RealFeel of 36°C and clear skies[7][8]. The settlement depends entirely on the Wunderground record for 13 July 2026, meaning any sudden convective rain or cloud cover later in the afternoon could suppress the peak temperature below critical ranges[10]. While global land temperatures remain 1.70°C above average, local Shenzhen conditions depend on immediate atmospheric dependencies rather than macro climate shifts, making the 12:00Z settlement window a tight race against the day's thermal peak.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

How does UMA secure the resolution?

The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.