Highest temperature in Beijing on July 23?

Platform comparison

Market context

Beijing’s summer heat is being measured here by the day’s peak at Capital International Airport, with the market ending once the 23 July observation window closes and the official daily high is fixed. The crowd is effectively pricing a warm, but not extreme, afternoon: the current distribution on Polymarket clusters around 27–28°C, which is consistent with a forecast where cloud build-up or a rain band limits the upside rather than producing a clean, prolonged heat surge.[1]

That reading fits Beijing’s July climatology. The city’s July temperatures are commonly described as sitting in the low 20s to low 30s Celsius, with heavy summer rainfall making the month one of the wettest of the year, so a mid-to-high 20s high is a familiar outcome rather than an outlier.[2] The 0% crowd-implied position suggests the market sees almost no support for a notably cooler day at the airport, and the main uncertainty is whether the high lands just below or just above the upper-20s band.[1][2]

For traders, the catalyst to watch is the sequence of short-range forecast updates from the meteorological services and the first reliable radar or precipitation timing for Beijing through the morning and early afternoon. Any shift in the timing of showers, or clearer spells allowing stronger insolation before clouds thicken, will matter more than broader seasonal conditions; the market’s current leaning is therefore on *day-of weather execution* rather than a structural climate angle.[1][2]

Sources: 1 · 2

Methodology

This page tracks Highest temperature in Beijing on July 23? 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.

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.

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.