Highest temperature in Beijing on July 23?

Platform comparison

Market context

Beijing’s heat has been subdued rather than extreme over the past day, with the city’s historic weather page showing a cool recent reading and yesterday’s maximum only 56°F, or about 13°C, at the local station. That puts the market in the context of a relatively mild start to the day, even though the settlement itself depends on the *highest* reading later in the session at Beijing Capital International Airport rather than the morning temperature[1].

July in Beijing is usually the city’s warmest and one of its wettest periods, with typical highs often running from 23°C to 31°C and frequent afternoon thunderstorms that can cap temperatures if cloud build-up arrives early. Reuters has also reported that Beijing has repeatedly faced severe summer heat in recent years, including a run of 27 straight days above 35°C in July during a recent heatwave, which is a reminder that the upper tail can still bite if synoptic conditions align[4][2].

For traders, the key catalysts are the daytime heating curve, any afternoon shower or thunderstorm development, and the timing of cloud cover over the airport station before the settlement window closes. The market’s own pricing has clustered around the high-20s to low-30s Celsius, with 28°C and 27°C the closest outcomes in the live book, suggesting the crowd is leaning towards a warm but not extreme peak unless clearing skies or delayed precipitation push the maximum higher[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Beijing on July 23? 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 Prediction Today, 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

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 Prediction Today. 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 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 Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.