Highest temperature in Shanghai on August 2?

Platform comparison

Market context

Shanghai’s airport maximum on 2 August will be set by the day’s single hottest observation at Pudong, so the clean way to model it is as a *daily high* rather than a noon snapshot. In practice, a rules-based watcher would poll the Wunderground history page, map the reported maximum into the market’s Celsius buckets, and update only when the site’s final daily record is locked in after the settlement window closes. August in Shanghai is normally hot and humid, with average highs around 32°C and daily highs often sitting in the upper 20s to mid-30s, while very hot outliers can push well above that range.[1][2][4][8][12]

That temperature distribution makes the current 0% yes-implied probability look detached from seasonal baselines. Historical summaries show August is Shanghai’s hottest month on average, with typical maximums near 32–35°C and occasional extreme heatwaves reaching around 40–41°C in the city record; even the airport-specific decision point should therefore be assessed against a regime where sub-30°C maxima are possible but not the modal outcome.[3][5][6][7][15] A trader running a simple bot would usually compare the live forecast curve, recent observed highs, and any forecasted rain or cloud cover, then size conditional orders around the nearest temperature band rather than treat the outcome as binary.

The main catalysts are the day’s synoptic weather evolution, especially whether a subtropical ridge, typhoon remnant, or convection-driven cloud/rain band suppresses heating or, conversely, allows full insolation. Shanghai’s August weather is still volatile enough for daily highs to vary meaningfully, and recent reporting has shown the city can deliver prolonged heat spells and record-breaking late-summer peaks when the pattern stays stable.[3][15][17] For programmatic monitoring, the useful inputs are the hourly forecast path, any official heat or storm alerts, and the Wunderground daily history feed near the end of the UTC settlement window, because the final bucket depends on the maximum actually logged at Pudong rather than the forecast peak.[9][10][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on August 2? 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.