Highest temperature in Beijing on July 4?

Platform comparison

Market context

Beijing is bracing for blistering heat as July heatwaves return to the capital, with temperatures already soaring past 41°C in recent June records. The current crowd-implied probability of 0% for the highest temperature staying below 35°C on 4 July 2026 reflects a sharp market reassessment over the last 24–48 hours, driven by renewed heatwave activity and updated weather models forecasting peak summer intensity.

Historical data frames this probability as highly improbable: Beijing’s all-time high of 41.9°C occurred on 24 July 1999, while July 2023 saw peaks of 40°C, and the hottest day ever recorded in the city hit 42.1°C on 5 July 2010. Even average July highs in Beijing typically reach 31°C (88°F), rarely falling below 26°C (78°F), making a sub-35°C peak on 4 July an outlier against decades of thermal patterns.

Traders should monitor the China Meteorological Administration’s daily heat alerts and any official orange or red warnings, which have previously triggered temperature spikes above 39°C. Recent coverage from Reuters notes that Beijing issued an orange alert in June 2023 as temperatures threatened to reach 39°C, underscoring the dependency on official weather warnings as a catalyst for extreme readings. With settlement ending 12:00 UTC on 4 July 2026, real-time Wunderground data from the Beijing Capital International Airport Station will be the definitive resolution source.

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Methodology

This page reviews Highest temperature in Beijing on July 4? 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 Prediction Today, 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 Prediction Today. 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.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.