Highest temperature in Shanghai on August 2?

Platform comparison

Market context

Shanghai’s reading will hinge on the day’s peak at Pudong Airport, not the citywide average, so the key question is whether August heat pushes the airport above the low-30s Celsius band that is typical for Shanghai in August. Seasonal baselines point to a month with average highs around 31–32°C and occasional much hotter spikes, while climatology sources note that August is Shanghai’s hottest month and can still produce readings well into the upper 30s during heatwaves.[1][3][6]

That historical backdrop matters because a 0% crowd price on the top band implies the market is leaning heavily against an exceptional surge rather than an ordinary hot day. Comparable August data show daily highs commonly near 30–35°C, but Shanghai has also logged extreme outliers, including 40–41°C in past August heat events, which means the tail risk is real even if it is infrequent.[5][6][15] In practice, this kind of market usually reacts more to a single forecast shift or heat alert than to the month’s average temperature profile.[11][12]

For traders, the main catalyst is the short-range forecast and any official heat warnings or typhoon-related cloud cover that could cap the afternoon maximum. AccuWeather’s August outlook for Shanghai shows daily highs broadly in the low 30s °C, with the early-month forecast clustering around the upper 20s to low 30s rather than the extreme upper-30s regime that would threaten the highest bands.[11] Any revision towards a stronger subtropical ridge, or conversely rain and onshore flow from nearby weather systems, is the most immediate dependency to watch.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Shanghai on August 2? 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.

FAQ

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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.

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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.

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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.

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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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.