Highest temperature in Shanghai on August 5?

Platform comparison

Market context

Shanghai’s highest temperature on 5 August will be set by the reading at Shanghai Pudong International Airport Station, and the crowd is currently pricing a **0%** chance of the market’s outcome being the far hotter tail of the distribution. That sits notably below the current live market, where the strongest Polymarket interest is clustered around **33–34°C** and the wider August forecast range for Shanghai runs to the low 30s Celsius, indicating a warm but not extreme day by seasonal standards.[9][1][3]

Historically, early August in Shanghai is usually hot and humid rather than exceptional, with long-run August averages around the high 20s to low 30s Celsius and typical daily highs near **31–32°C** in general climate guides.[4][10][18] Forecast services for 5 August 2026 are more elevated than that baseline, with highs commonly shown around **34–35°C** and some products allowing **35–36°C** around the city, which helps explain why the market is focused on a tight band rather than a broad cold-vs-hot split.[2][3][13]

For traders, the key catalysts are the morning-to-afternoon evolution of cloud cover, showers, and thunderstorm timing, because those factors can cap the airport’s maximum even when the broader regional forecast looks very warm.[11][2] The contract’s settlement depends on the airport station’s reported daily high on Wunderground, so any late-day storm, sea-breeze shift, or observation update can matter more than citywide forecasts elsewhere in Shanghai.[9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on August 5? 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 Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

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.

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 Best Prediction Markets 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.