Highest temperature in Shanghai on August 17?

Platform comparison

Market context

Shanghai's highest temperature on 17 August 2026 will be measured at Pudong International Airport Station and resolved against Weather Underground's Daily Observations table. The market currently reflects zero probability across all temperature ranges, suggesting either insufficient trader participation or an expectation that extreme heat is unlikely for that specific date.

August in Shanghai typically sees daily highs between 32–35°C, with occasional peaks above 36°C during heat waves. Historical data from the China Meteorological Administration shows that mid-August temperatures in Shanghai have ranged from 29°C to 40°C over the past two decades, with readings above 38°C occurring in roughly one in five years. The 0% crowd probability may reflect baseline seasonal patterns rather than any specific forecast disadvantage for 2026.

Traders should monitor China's meteorological forecasts released in early August 2026, particularly any alerts from the Shanghai Meteorological Bureau regarding heat waves or tropical systems. The resolution hinges entirely on Weather Underground's Daily Observations data from Pudong station—not summary figures—making data availability and station continuity critical. Any disruption to station operations or data reporting could affect settlement accuracy. Regional weather patterns, including the position of the Pacific subtropical high-pressure system and potential typhoon activity, will drive actual temperature outcomes in the fortnight preceding the resolution window.

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 Shanghai on August 17? 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

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

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.

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.

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.