Highest temperature in Beijing on August 15?

Platform comparison

Market context

Beijing's maximum temperature on 15 August 2026 will be measured at the Capital International Airport Station and resolved against Weather Underground's Daily Observations table. The crowd currently assigns zero probability to any outcome, suggesting either extreme confidence in a particular range or insufficient liquidity to establish pricing. August is Beijing's peak summer month, with historical highs typically ranging between 32–37°C, though extreme heat events have pushed readings above 40°C in recent years.

Historical August data from Beijing shows the city regularly experiences temperatures in the mid-to-high 30s Celsius during mid-month. The 2010 heat wave saw readings exceed 40°C, whilst more recent summers have produced highs of 35–38°C in mid-August. The zero probability reading suggests the market may be waiting for seasonal forecasts or reflecting an expectation that certain temperature bands are near-certain. However, Beijing's summer weather remains variable enough that traders should examine long-range forecasts from China's meteorological authority and international models as August 2026 approaches.

Traders monitoring this market should track China Meteorological Administration seasonal outlooks and any heat advisories issued in late July or early August 2026. Recent summers have shown increased volatility in peak temperatures across northern China, with some years trending warmer than historical norms. The resolution mechanism's reliance on Weather Underground's Daily Observations table rather than summary figures means traders must verify the specific station's reporting practices, as discrepancies between observation-level and summary data occasionally occur during extreme weather events.

Methodology

This page reviews Highest temperature in Beijing on August 15? 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

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.

UK Frequently Asked Questions

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.

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.

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%.