Highest temperature in Shanghai on August 15?

Platform comparison

Market context

Shanghai's highest temperature on 15 August 2026 will be measured at Pudong International Airport Station and resolved against Weather Underground's Daily Observations table rather than the Day High & Low summary—a distinction that matters when automated feeds pull data from different endpoints. The settlement window closes at midday UTC, creating a hard cutoff for intraday temperature swings that may still be climbing during Shanghai's afternoon peak.

August temperatures in Shanghai historically cluster between 32–35°C, with extremes occasionally reaching 37–38°C during heat waves. The 0% crowd probability suggests either consensus that the market's temperature bands are set above realistic ranges, or that traders are waiting for seasonal forecasts to materialise before committing capital. Reviewing Weather Underground's historical station data for mid-August across prior years provides the baseline: most years see highs in the 33–35°C band, though 2013 and 2017 recorded 37°C+ readings during particularly intense summer heat events.

Traders monitoring this market should track China Meteorological Administration forecasts released 7–10 days ahead, which typically inform Weather Underground's station observations. Tropical cyclone activity in the Western Pacific during early August could suppress temperatures or drive them upward depending on storm proximity and timing. The specific resolution dependency on Pudong station data—rather than city-wide averages—means localised conditions matter; airport microclimates can diverge from urban readings. Programmatic approaches would benefit from setting conditional alerts on Weather Underground's API for that specific station's daily maximum, cross-referenced against historical percentile bands to flag when observed readings approach band boundaries.

Methodology

This page reviews Highest temperature in Shanghai on August 15? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

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On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

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