Highest temperature in Shanghai on August 7?

Platform comparison

Market context

Shanghai is under a hot early-August setup, with the latest forecasts still pointing to daytime highs around the mid-30s Celsius and only limited cooling from showers or cloud. AccuWeather’s monthly view has Shanghai’s August highs mostly in the low 30s Celsius, while a local report says the city has been under an orange heatwave alert with temperatures expected to reach 37–38°C and only a small chance of afternoon thunderstorms.[1][8]

That leaves the current **0% YES** price looking detached from the usual seasonal pattern. August in Shanghai is typically hot and humid, with long-run averages around 32°C for the monthly high, so a double-digit reading in the relevant temperature band would normally be the baseline outcome rather than a tail event.[7][13] For comparison, even other forecast services for early August show highs near 33–35°C, which is consistent with a market that should be sensitive to whether the heat holds through the afternoon peak at Pudong rather than to overnight conditions.[2][12]

The key catalyst is the official Shanghai and airport-area weather evolution between now and the settlement window close, especially any shift in the subtropical high, cloud cover, or convective storms that could cap the day’s maximum temperature. Traders should watch updated local bureau alerts and airport-adjacent observations, because the market resolves to the highest reading at Shanghai Pudong International Airport Station on 7 August, not the citywide forecast; a brief thunderstorm or sea-breeze effect could matter more than the headline high if it arrives before the daily peak.[8][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Shanghai on August 7? 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

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

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.

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.

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.