Highest temperature in Beijing on July 4?

Platform comparison

Market context

The real-world event is the peak daily temperature recorded at Beijing Capital International Airport on 4 July 2026, with current ensemble forecasts from major meteorological models suggesting a likely range of 33–36°C[1]. Historical data frames the current 0% crowd-implied probability for a specific outcome as highly questionable, given that July is Beijing’s hottest month, with daily highs averaging 88°F (31.1°C) and rarely falling below 78°F (25.6°C)[3]. Record-breaking heat is not uncommon; the city logged 41.1°C in June 2023, and its all-time high of 41.9°C occurred on 24 July 1999, while historic data shows a peak of 42.1°C on 5 July 2010[2][6][9]. These comparable cases indicate that temperatures in the 33–36°C band are statistically probable, making the market’s dismissal of any specific range appear inconsistent with established climatic patterns.

Traders should monitor upcoming meteorological updates and any official climate declarations from Chinese authorities, as heatwaves returning to northern China have previously triggered urgent public advisories[2]. The market is leaning on the catalyst of seasonal heatwave intensity, which has historically driven temperatures well above 40°C during summer months[2]. Recent news from Reuters confirms that heatwaves have already scorched northern China, prompting authorities to urge people to limit time outdoors, suggesting a high probability of extreme heat on the settlement date[2]. No scheduled political debates or campaign-finance disclosures directly influence this weather event, but the timing coincides with the peak of Beijing’s rainy and hottest season, making weather model updates the primary dependency for resolution[5]. The thin volume in current markets, with 35°C priced at 37.5% on some platforms, further underscores the volatility and uncertainty surrounding the final temperature[4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Beijing on July 4? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.