Highest temperature in Beijing on July 24?

Platform comparison

Market context

Polymarket is pricing this Beijing airport temperature market at **0% YES** right now, which leaves the contract effectively unmoved despite the fact that the underlying event is set to resolve on the day’s observed high at Beijing Capital International Airport. On Polymarket, positions are bought with **USDC** on **Polygon**, and the market settles through **conditional tokens**: if the selected temperature range matches the Wunderground reading for the airport station, the token pays out; otherwise it expires worthless.

July is Beijing’s hottest month on average, with daytime highs commonly around **31°C** and a long tail into the upper 30s in hotter years, so the historical frame does not support treating high temperatures as unusual. Travel China Guide says July is also Beijing’s wettest month, with rain and thunderstorms often suppressing highs below **30°C** on some days, which matters for traders because cloud cover and precipitation can cap the upside even in peak summer.[1] The current **0%** price therefore looks detached from seasonal climatology rather than from an identifiable extreme-weather setup.

For a trader, the main catalysts are the same inputs that move the actual airport reading: late-morning cloud build-up, rainfall, and any official weather warnings or forecast shifts from Chinese meteorological services as the day progresses. The market resolves on the **highest temperature recorded** at the airport station during the settlement window, so the live intraday path matters more than the overnight start; once the temperature ticks through a band, conditional-token payouts become locked to that range at expiry. The market page itself also indicates that the contract is framed around a fixed set of temperature outcomes, so pricing should track the probability of the day’s maximum landing in each band rather than the daily average.[2]

Sources: 1 · 2

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 PolyGram. 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.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.