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 in recent years soaring past 41 degrees Celsius in June and July. The market’s 0% probability for a “YES” outcome implies the crowd expects the highest temperature on 4 July 2026 to fall below the resolution threshold, likely under 35°C. Historical data frames this expectation: July in Beijing typically sees daily highs around 31°C (88°F), rarely dropping below 26°C or exceeding 36°C (96°F), while the city’s all-time high of 41.9°C occurred on 24 July 1999, and a record 42.1°C was logged on 5 July 2010[2][6][9].

Traders should monitor upcoming weather forecasts from Wunderground and official statements from China’s National Climate Center, which recently confirmed record national average temperatures for July last year[8]. Key catalysts include any sudden shifts in monsoon patterns, humidity spikes, or official heatwave declarations that could push temperatures above 35°C. Recent news from Reuters highlights that Beijing has already smashed June records with 41.1°C, suggesting extreme volatility is possible if similar conditions persist into early July[1]. The market leans heavily on the timing and intensity of these heatwaves, as authorities have already urged residents to limit outdoor exposure during peak heat[6].

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 Trump Prediction 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

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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 Trump Prediction route into the same order book at 0% fees.

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.