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 minimal trading activity. August in Beijing typically sees daily highs between 28–35°C, with occasional peaks above 36°C during heat waves. The settlement mechanism specifies the Daily Observations granular data rather than summary figures, a distinction that matters when intraday temperature spikes occur.

Historical August temperatures at Beijing Capital show that readings above 35°C occur in roughly 40–50% of years, whilst days exceeding 37°C are less frequent but not exceptional. The 2010 heat wave produced readings near 40°C, and more recently, summer 2022 saw sustained high temperatures across northern China. Current climate patterns and the two-year lead time mean seasonal forecasting models have limited precision; however, the El Niño–Southern Oscillation state and Atlantic sea surface temperatures in early 2026 will influence northern hemisphere summer conditions. Traders should monitor China Meteorological Administration seasonal outlooks released in the months preceding August, as well as any unusual atmospheric circulation patterns reported in late spring 2026 that might signal an anomalous summer.

The zero probability reading likely reflects low market depth rather than genuine consensus. Value may exist in ranges between 32–36°C, where historical frequency and typical August conditions cluster, whilst extreme outcomes above 38°C or below 28°C remain underpriced relative to their historical occurrence rates.

Methodology

We track Highest temperature in Beijing on August 15? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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 Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.