Highest temperature in Beijing on July 24?

Platform comparison

Market context

Beijing’s official airport reading on 24 July is the event that will settle this contract, and the current prediction-market picture is unusually muted: Polymarket shows 29°C as the leading outcome at 28%, with 30°C next at 24%, while the crowd-implied probability of a YES outcome in the broader sense is effectively 0% because only specific temperature brackets can resolve. That makes the contract more about *which* bin captures the day’s maximum than about a binary hot-versus-cold call, and it leaves little room for any cross-platform disagreement to express itself unless another venue is quoting the same bins differently.[1][3]

Historically, Beijing in July is a high-heat, high-rainfall environment, with the month described as the city’s hottest and with an average daytime high around 31°C, but also frequent showers and heavy-rain episodes that can cap maxima on some days.[2] The recent market record also shows how quickly these temperature contracts can settle when the observed high lands in a clear bracket: a 16 July Beijing market resolved at 34°C after the airport station confirmed that daily peak.[3] On that basis, the current pricing looks consistent with a modestly warm July day rather than an extreme-heat event, and the main analytical question is whether cloud cover or rain trims the airport high below the upper 20s or pushes it into the low 30s.[2]

Traders should watch the Beijing airport forecast through the morning and early afternoon, because the market settles on the highest temperature recorded at Beijing Capital International Airport Station by 12:00 UTC, not on a citywide average.[1] The key dependencies are timing of peak heating, convective showers, and any late-morning cloud build-up, all of which can make a one- or two-degree difference in the final bracket in summer Beijing.[2] If sportsbook weather lines are available elsewhere, the meaningful comparison is whether they imply a similar low-30s cap or price a hotter tail than the prediction market, but the current crowd pricing already suggests a relatively restrained high-temperature distribution.[1]

Sources: 1 · 2 · 3

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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