Highest temperature in Beijing on August 17?

Platform comparison

Market context

Beijing's maximum temperature on 17 August 2026 will be measured from the Capital International Airport Station's daily observations table on Weather Underground. The crowd currently assigns zero probability to any outcome, suggesting either extreme confidence in a particular range or insufficient liquidity to establish meaningful pricing across the full distribution.

August represents peak summer in Beijing, with historical daily maxima typically ranging between 29–34°C during this period. The 0% implied probability across all ranges points to a consensus view that sits heavily in one tail of the distribution—most likely the mid-to-high 30s Celsius, where August temperatures most frequently settle. Comparable years show occasional excursions into the 35–37°C band during heat waves, though readings above 38°C remain statistical outliers for mid-August. The absence of any probability mass suggests traders may be anchoring to a narrow expected outcome rather than pricing genuine uncertainty about weather variability.

Traders should monitor China Meteorological Administration forecasts released in the week preceding 17 August, as these typically provide reliable 7–10 day outlooks for Beijing's temperature trajectory. Atmospheric pressure systems and moisture patterns in early-to-mid August will determine whether the city experiences typical summer conditions or an anomalous heat event. Any sustained high-pressure system over northern China in the fortnight before the settlement date could shift expectations materially. The current flat probability distribution suggests significant value may exist at the extremes if weather patterns diverge from consensus expectations.

Methodology

This page reviews Highest temperature in Beijing on August 17? 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.

Is Polymarket legal in the UK?

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%.