Highest temperature in Shanghai on June 22?

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Market context

At Shanghai Pudong International Airport, the read is a **favourite-leaning underdog** for a materially warm high, but the market’s **0% YES** implies consensus is treating an extreme reading as effectively off the board. June is firmly within Shanghai’s hot season, which runs from mid-June to mid-September, and average daily highs at Pudong rise into the low 80s Fahrenheit through the month; Weather Spark says June highs commonly sit around 77°F to 83°F, with rare excursions above 92°F[1][3]. That makes the broad climatology compatible with a mid-to-high 20s Celsius outcome, but not with anything near record territory[1][3].

The historical frame matters because the settlement is tied to the **highest temperature recorded at the airport station on 22 June**, not the midday reading or citywide conditions. Weather.gov’s time series for ZSPD shows the diurnal climb can still be underway into the afternoon, while AccuWeather’s forecast snapshot for the airport points to a thundery, rain-affected day with temperatures around the high 70s Fahrenheit and heavy rain later[4][8]. In handicap terms, that favours the market **under** rather than the crowd’s implied certainty of **no YES**, but the value angle is mainly contrarian if convection breaks out after the early peak and pushes the airport above the ordinary June band[2][8].

For traders, the key catalysts are the **day-of forecast updates**, any **thunderstorm timing**, and whether showers arrive before or after the afternoon maximum, because Shanghai’s summer humidity can support sharp but brief spikes in temperature even when the day finishes wet[2][8]. BBC Weather’s current airport-area reading shows 28°C with thundery showers and high humidity, which reinforces the case that the session is weather-sensitive rather than locked into a stable, cool regime[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win, which mirrors the Polymarket order book directly.

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

Where can I trade this market with the lowest fees?

On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Who Will Win is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.

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.