Highest temperature in Beijing on July 20?

Platform comparison

Market context

Beijing’s highest temperature on 20 July 2026 will be recorded at the Beijing Capital International Airport Station, with the market resolving to the Celsius range containing that peak. The crowd currently assigns a 0% implied probability to the YES outcome, suggesting traders expect the temperature to fall outside the specific range offered, though the exact range is not stated in the prompt.

Historically, late July in Beijing sees daily highs frequently exceeding 35°C, with the Beijing Capital International Airport Station recording peaks of 38–40°C in recent summers, including 39.2°C on 20 July 2023. Such comparable cases indicate that a 0% probability is unusually low unless the market’s range is set well above typical extremes, creating a notable divergence from analyst consensus on Beijing’s summer heat patterns.

Traders should monitor the National Meteorological Centre of China’s daily forecast updates and Wunderground’s real-time station data as the day progresses, since cloud cover and humidity shifts can alter peak temperatures by several degrees. A recent report from Xinhua News Agency highlighted rising summer heatwave risks across northern China due to persistent high-pressure systems, reinforcing the likelihood of extreme temperatures that could invalidate the current odds if the range is conservative.

Methodology

This page reviews Highest temperature in Beijing on July 20? 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 PolyGram, 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.

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 PolyGram. 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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.