Highest temperature in Beijing on July 25?

Platform comparison

Market context

Beijing's peak temperature on 25 July 2026 will be recorded at the Capital International Airport meteorological station and resolved against historical data from Wunderground. July is consistently the hottest month in Beijing, with average daily highs around 29–30°C, though extremes regularly exceed 35°C during heat waves. The settlement mechanism relies on a single, publicly auditable data source, making this market suitable for automated resolution workflows and conditional order logic tied to weather API feeds.

Historical precedent shows July temperatures in Beijing cluster heavily in the 30–37°C range. Since 2010, the city has recorded July highs above 35°C in roughly 60% of years, with peaks occasionally reaching 40°C during severe heat events. The 0% crowd probability suggests either extreme confidence in a narrow temperature band or insufficient liquidity to price tail outcomes. Traders building systematic models should cross-reference China Meteorological Administration forecasts and seasonal oscillation patterns; July 2026 falls in a neutral ENSO phase based on current projections, offering no obvious deviation from the 30-year climatological mean.

Monitoring points include the East Asian summer monsoon intensity (typically peaks in July, moderating extreme heat) and any significant atmospheric blocking patterns forecast for late June and early July 2026. Real-time tracking via automated weather data ingestion—pulling daily highs from Wunderground's API or equivalent—allows traders to adjust positions as the settlement date approaches and actual conditions emerge. The narrow resolution window (settlement at noon UTC on 25 July) means final adjustments must account for diurnal heating cycles and any last-minute weather system movements.

Methodology

We track Highest temperature in Beijing on July 25? 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 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 Kalshi Fees 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.