Highest temperature in Shanghai on August 6?

Platform comparison

Market context

Shanghai’s airport high on 6 August is a straight weather-roulette number, and the market’s **0% YES** implies the crowd sees almost no chance of an extreme reading landing in the named Wunderground range. The current public forecasts are not especially supportive of a cooler-than-usual outcome: AccuWeather has Shanghai around **89°F/32°C** for 6 August, while Time and Date shows **95°F/83°F** with passing showers, and The Weather Network has an even hotter morning profile with thunderstorms and a high near **28°C** at city level, which still points to a warm afternoon ceiling rather than a washed-out day.[1][2][14][19]

For framing, August in Shanghai is normally hot and humid rather than benign. Long-run August averages cited by travel and weather references sit around the low 30s Celsius, with typical highs near **31–33°C** and a meaningful rainfall risk, so the favourite is usually a mid-30s Celsius outcome if skies clear for even part of the day.[3][4][7][9][16] That makes the underdog angle interesting only if persistent cloud, rain bands or coastal storms cap the maximum; otherwise the historical baseline favours a hotter final print than the market’s zero-implied stance suggests.[3][9][16]

The main catalysts are timing and convective weather, not any scheduled event: the final settlement depends on the *daily high* at Shanghai Pudong International Airport, so late-morning sunshine, afternoon storm cover, or a sea-breeze shift can all swing the outcome by a few degrees.[1] Traders should watch the day-of hourly updates and whether showers linger into the warmest part of the afternoon; AccuWeather and Time and Date both show showers or thunderstorm risk in the forecast window, which is the clearest source of value for contrarian buyers of a hotter-than-consensus range.[2][19]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on August 6? 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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.