Highest temperature in Beijing on July 24?

Platform comparison

Market context

Beijing Capital International Airport’s official high for 24 July is what settles this market, and in midsummer the airport often sees heat build quickly after sunrise rather than staying locked near a steady afternoon plateau. July is Beijing’s hottest month on average, with typical highs around 31°C and occasional spikes to 40°C, so the zero-implied price on the upper bands is only defensible if traders think cloud, rain or a cooler air mass will cap the day well below seasonal norms.[1]

For historical framing, the useful approach is to treat this as a distribution problem rather than a simple hot-or-cold call. Recent July examples show Beijing can still print mid-30s even within the same month, with 34°C confirmed on 16 July 2026 at the same airport-station reference used by related markets.[3] Programmatically, a trader would weight the current month’s forecast against the airport’s realised daily highs, then map the expected peak into the market’s discrete temperature buckets rather than trading a single point estimate.[2][3]

The main catalysts are the local forecast updates that alter rain probability, cloud cover and afternoon heating, because July is also Beijing’s wettest month with frequent showers and thunderstorm risk, especially after mid-month.[1][4] In practice, a bot or conditional-order setup should watch the hourly forecast for Beijing Capital International Airport, plus any short-notice rain band crossing the city, since a wet morning can suppress the day’s maximum while a late clearing trend can still leave room for a late surge in temperature.[1][4]

Sources: 1 · 2 · 3 · 4

Methodology

We track Highest temperature in Beijing on July 24? 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

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