Highest temperature in Shanghai on August 1?

Platform comparison

Market context

Shanghai’s **August 1** heat outcome is essentially a bet on whether Pudong Airport posts an ordinary midsummer high or a brief surge into the upper 30s. The current crowd price of **0% YES** makes the favourite clearly the “no extreme heat” side, and on the published climate base that is understandable: Shanghai’s August highs are typically around **32–33°C**, with daily highs often clustering in the low-to-mid 30s rather than spiking much further[2][16].

For framing, the historical read is that **35°C-plus** is a meaningful threshold in Shanghai rather than a routine outcome. August is the city’s hottest month, with average highs commonly reported around **32°C** and rare peaks above **39–40°C** in past heatwaves[5][6]. That means the market’s 0% YES implies a near-certainty that the airport will stay below the hotter settlement bands, which may be fair if the day behaves like a standard August day, but could be underpricing a contrarian heatwave tail if local conditions line up for strong sunshine and suppressed sea-breeze relief[1][10].

The key catalysts are short-horizon weather signals rather than fixed schedules: the overnight and early-morning evolution of cloud cover, rainfall, and humidity at Shanghai Pudong will matter most before the 12:00Z settlement window closes. Recent August outlooks still point to very warm conditions, with daily highs forecast roughly in the **82° to 92°F** range and rainfall/typhoon-season volatility remaining a live dependency, so traders should watch for any late-morning convective rain band or cooling shift that caps the day’s maximum[9][10][15].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on August 1? 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 Who Will Win 2026, 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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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 Who Will Win 2026 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.