Highest temperature in Beijing on July 4?

Platform comparison

Market context

Beijing is currently bracing for blistering heat as summer heatwaves return to the capital, with temperatures already soaring past 41 degrees Celsius in recent years. This market resolves the peak temperature at the Beijing Capital International Airport Station on 4 July 2026, yet the crowd-implied probability of 0% for a "YES" outcome suggests traders are betting the heat will not reach the specific threshold in question. The settlement window closes at midday UTC, leaving little time for late-stage weather shifts to alter the final reading.

Historical data frames this near-zero probability as a rational stance, given that July in Beijing typically sees daily highs around 31°C (88°F), rarely exceeding 36°C (96°F) [3]. While the city recorded an all-time high of 41.9°C on 24 July 1999 and a June peak of 41.1°C in 2023, early July has not consistently matched these extremes [1][2]. The 2010 peak of 42.1°C occurred on 5 July, but such outliers are statistically infrequent, making a 0% probability for a specific high threshold plausible unless a sudden heat dome develops [9].

Traders should monitor real-time updates from Wunderground and the National Climate Center for any announcements regarding incoming heat domes or humidity spikes that could push temperatures above expectations [5]. Recent reports indicate China experienced its hottest July on record in 2023, with national averages hitting 23.2°C, hinting that 2026 could follow a similar trend if atmospheric conditions align [5]. The key dependency is the timing of the heatwave; if the peak arrives before 4 July, the threshold may be breached, but if it lags, the 0% probability will likely hold firm.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Beijing on July 4?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

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What's the difference between match odds and outright odds?

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