Highest temperature in Beijing on August 8?

Platform comparison

Market context

Beijing’s hottest reading on 8 August is the underlying event, and the market is pricing **0% YES**, which makes **YES** the clear longshot and implies the crowd is effectively saying the day will not land in the relevant temperature band. The consensus view is that Beijing’s August heat normally sits around the low 30s Celsius, with historical August averages commonly around 31°C by day, while recent intraday readings in the city have already been in the mid-to-high 20s °C to upper 20s °C range this August.[3][5][16]

For context, August in Beijing has a well-established warm profile, but the actual settlement value here depends on the *highest* reading in Weather Underground’s Daily Observations for Beijing Capital International Airport Station, not the summary high on the page.[18] That creates a small but real edge for traders who think the observed airport maximum could differ from broad-city weather expectations, especially if late-day warming, cloud breaks, or a brief convective spike pushes the top reading into a higher band than the market currently implies.[1][18] On the other hand, the current 0% price suggests the favourite is effectively the “no surprise” outcome, so the contrarian value case sits with **YES** only if the day develops hotter than the prevailing consensus, rather than merely near average.[1][15]

The main catalysts are the intraday updates in the Daily Observations feed through the settlement window, because the final print can change as new observations are logged at the airport station.[18] Traders should watch for any rapid rise in temperature during Beijing daytime hours, plus local cloud cover and wind shifts that can either cap heating or allow a brief peak; today’s early readings in Beijing were already in the high 70s to mid-80s °F, which is broadly consistent with a warm August session but not automatically a decisive one.[1] The key dependency is therefore not a policy or scheduled announcement, but the live observational path at the airport through midday and early afternoon.[18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Beijing on August 8? 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 Who Will Win, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

UK Frequently Asked Questions

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 Who Will Win. 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.

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Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.