Highest temperature in Shenzhen on July 20?

Platform comparison

Market context

Shenzhen is entering its peak summer heatwave, with July consistently delivering the city’s highest temperatures of the year. Historical data shows daily highs in Shenzhen during July average around 31–32°C, often climbing higher under clear subtropical high pressure systems, though frequent rainfall and typhoon activity can temporarily suppress peak readings [1][2]. The current 0% crowd-implied probability for any specific high-temperature range suggests traders are either misreading the market’s resolution mechanics or betting on an extreme cooling anomaly that contradicts decades of meteorological records for the region.

Traders should monitor real-time weather bulletins from the Shenzhen Meteorological Bureau and Wunderground’s hourly updates for the Bao’an International Airport Station, as the market resolves strictly on the day’s recorded maximum [1]. Key catalysts include the development of any approaching typhoons or sustained subtropical high pressure, both of which directly influence peak temperatures. While no political debates or campaign disclosures affect this weather market, the settlement window ending 2026-07-20T12:00:00Z means the final temperature must be confirmed before noon UTC on 20 July, leaving little room for late-day volatility to alter the outcome [1].

Sources: 1 · 2

Methodology

This page tracks Highest temperature in Shenzhen on July 20? 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

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 Election Predictions UK 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.