Highest temperature in Beijing on July 24?

Platform comparison

Market context

Beijing Capital International Airport’s afternoon high on 24 July is the figure that matters, with settlement tied to the day’s maximum temperature on Wunderground rather than a citywide average. July is Beijing’s hottest month, with typical daytime highs around 31°C and a long tail into the mid-30s when the heat builds under strong sun.[1] That makes the current 0% implied yes-price easy to read as a sceptical market view on the upper end of the range, not a statement that the weather will be mild.

For a historical frame, Beijing’s July climate is both hot and volatile: rainfall is frequent, humidity is high, and daily highs can be pulled down on wet or stormy days even though extreme readings still occur.[1] One live market snapshot shows traders concentrating around 29°C and 30°C outcomes rather than the very top buckets, which fits the idea that the market is pricing a routine summer peak rather than an outlier heat event.[2] In programmatic terms, a trader would usually map fresh station forecasts into the relevant bin thresholds, then update exposure as soon as model runs shift the expected airport high.

The main catalysts are the same ones a bot would watch: the Beijing airport station forecast, any thunderstorm or rain timing that suppresses the afternoon maximum, and whether cloud cover arrives before peak heating. July is also Beijing’s wettest month, with showers and thundershowers common and the main flood season beginning mid-month, which can materially cap the high even on otherwise warm days.[1] The practical dependency is simple: if the forecast for the airport shifts from a dry, sunny afternoon to a rain-affected one, the probability mass should move down quickly across the higher temperature bands.[1]

Sources: 1 · 2 · 3

Methodology

This page reviews Highest temperature in Beijing on July 24? 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 Kalshi Fees, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Kalshi Fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.