Highest temperature in Beijing on August 11?

Platform comparison

Market context

Beijing's highest temperature on 11 August 2026 will be measured at Capital International Airport Station and resolved via Weather Underground's Daily Observations table, the authoritative source for this market. The settlement window closes at midday UTC on that date, creating a hard deadline for temperature data capture. Current crowd pricing at 0% YES suggests either extreme confidence in a specific temperature range or minimal trading activity; given August is Beijing's peak summer season with typical highs between 29–33°C, the lack of probability mass across all ranges warrants scrutiny of which outcome the market has actually priced.

Historical August temperatures at Beijing Capital Airport show consistent patterns: the past decade's August highs cluster between 28–35°C, with extreme readings above 36°C occurring roughly once every three to four years during heat waves. The 2023 summer saw several days exceed 35°C across northern China, whilst 2022 remained cooler. This distributional history suggests the market's current state reflects either incomplete price discovery or a consensus view that one particular temperature band dominates—a condition that typically invites contrarian positioning when new data emerges.

Traders should monitor China Meteorological Administration forecasts released in late July and early August, which typically refine seasonal outlooks into specific daily predictions. Any announced heat wave or cold front affecting northern China in early August will materially shift expectations. Funding rates on crypto derivatives markets have shown seasonal sensitivity to macroeconomic data releases; whilst weather itself carries no direct crypto tie-in, the timing of this resolution coincides with potential August volatility in traditional markets that could affect on-chain liquidity and USDC settlement conditions.

Methodology

This page reads Highest temperature in Beijing on August 11? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

UK Frequently Asked Questions

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

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%.