Highest temperature in Beijing on July 31?

Platform comparison

Market context

Beijing’s late-July heat pattern is firmly established: July is the city’s warmest month on average, with mean highs around 31–32C, and daily peaks in the low-to-mid 30s are common even before considering heatwave spikes.[1][15] On the historical record for 31 July specifically, Beijing’s long-run average maximum sits at about 31C, while the day’s extreme high has reached 37C in the available climate tables, which is enough to keep the upper temperature bands in play if conditions turn hot.[2] More broadly, Beijing’s all-time July record is 41.9C, showing that the local climate can produce outsized extremes when continental heat builds.[4]

For traders, the key catalyst is the same one that drives many weather markets: the actual afternoon heat around Beijing Capital International Airport, rather than citywide averages or forecasts from other districts. Wunderground’s daily history page is the designated settlement source, so the market is leaning on whether the airport station logs a brief spike above the lower brackets before the window closes.[14] With the market currently at 0% YES, it is pricing in a very mild outcome relative to the seasonal norm; any move will depend on short-range forecast updates, cloud cover, rain chances and the timing of the day’s peak temperature, all of which can change quickly in a summer convective regime.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Beijing on July 31? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

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.