Highest temperature in Beijing on July 31?

Platform comparison

Market context

Beijing Capital International Airport’s **highest temperature** for 31 July will be the settlement driver, and the key question is whether the airport’s daytime maximum lands in the bracket the market is currently pricing at 0% YES. The official reference is the Wunderground daily history page for ZBAA, so a programmatic workflow would normally poll that source, convert the reported peak to Celsius if needed, and map it to the market’s range before the settlement cut-off.[15]

July is Beijing’s hottest month on average, with long-run high temperatures around 31–32°C and 31 July itself averaging roughly 31°C in historical climate tables.[1][2][6] That makes mid-30s readings common enough to matter, but the airport site can sit a little below or above city-centre benchmarks depending on wind, cloud cover and rainfall. Historical Beijing records also show that the city can spike far above normal in late July, with absolute highs in the low 40s Celsius across the broader climate record.[3][4][11]

For a trader using bots, conditional orders or copy-trading, the main catalysts are the same ones that move short-horizon weather books: updated forecast runs, precipitation timing, and whether heat builds under clear skies or is knocked back by showers. Beijing’s July climatology is also rain-heavy, so any organised convective rain band or sustained cloud cover can materially reduce the day’s maximum; that is the variable to watch in the morning and early afternoon UTC before the market locks. If the forecast and observed trend stay muted, the 0% YES price is consistent with a market expecting the airport high to miss the active range rather than merely touch it.[1][2][11]

Sources: 1 · 2 · 3 · 4 · 5

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 Polymarket Bot UK, 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

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.

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 Polymarket Bot UK 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.