Highest temperature in Shanghai on June 20?

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Market context

Shanghai’s hottest reading on 20 June will be set by the maximum temperature recorded at Pudong International Airport Station, which makes the market sensitive to a single intraday spike rather than the day’s average. For programmatic monitoring, the cleanest approach is to poll the Wunderground daily history page for ZSPD and track the *highest* Celsius value as it updates through the local day, rather than relying on broad city forecasts.[3]

The 0% crowd-implied YES price points to a market that has not yet assigned meaningful weight to an outcome in the target range, but June climatology suggests this event is not a cold-weather outlier. At Pudong Airport, June highs typically sit in the low-to-mid 20s Celsius, with June daily highs often rising through the month and AccuWeather’s June 2026 outlook for the airport showing highs roughly in the mid-20s to high-20s Celsius.[1][2] That places the likely settlement band in a part of the distribution where a few degrees of error can matter, especially if afternoon heat builds faster than model guidance suggests.[1][5]

A trader watching this mechanically should focus on same-day drivers that affect the afternoon peak: rain timing, cloud cover, sea breeze, and any shifts in the local synoptic pattern that alter heating at the airport site. Shanghai June weather is commonly associated with humid, rainy-season conditions, which can suppress maxima when showers arrive early but still allow sharp spikes if precipitation holds off until later.[5][7] If you are wiring this into bots or conditional orders, the practical check is whether revised hourly forecasts and live station observations are converging towards a threshold that flips the relevant temperature bucket before the settlement window closes.[3]

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 Polymarket Bot UK, 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

Is this market available outside the US?

Polymarket Bot UK 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 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Bot UK 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.