Highest temperature in Shanghai on August 19?

Platform comparison

Market context

Shanghai's maximum temperature on 19 August 2026 will be recorded at Pudong International Airport Station and resolved against Weather Underground's Daily Observations table. The settlement window closes at midday UTC on that date, meaning traders must rely on overnight data capture to confirm the final reading.

August represents Shanghai's peak summer season, with historical daily maxima typically ranging between 32–35°C during mid-month. The 0% crowd probability suggests traders are either uncertain about the specific temperature bands offered or expect conditions outside typical August patterns. Comparable August 19th readings from prior years show consistency within a narrow band; the Shanghai Meteorological Bureau's records indicate that extreme heat events pushing above 37°C occur occasionally but remain statistical outliers for this particular date rather than the norm.

The critical dependency for traders is Weather Underground's data feed from Pudong station, which occasionally experiences reporting delays or corrections in the 24 hours following observation. Tropical cyclone activity in the Western Pacific during late August can introduce volatility into Shanghai's temperature profile, though such systems typically arrive after mid-month. Traders should monitor the China Meteorological Administration's 10-day forecasts released in early August and track any typhoon warnings that might suppress daytime heating. The resolution hinges entirely on the Daily Observations table rather than summary figures, making direct station data verification essential before settlement.

Methodology

This page tracks Highest temperature in Shanghai on August 19? 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.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

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.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.