Highest temperature in Shanghai on July 16?

Platform comparison

Market context

Shanghai is currently experiencing mid-July heat as the city approaches its peak summer temperatures, with the highest reading on 16 July 2026 yet to be officially recorded at the Pudong International Airport Station. The prediction market for this event shows a 0% implied probability for the YES outcome, suggesting the crowd believes the temperature will fall outside the specific range offered, though the exact range remains undefined in the prompt.

Historically, Shanghai’s mid-July highs at Pudong typically range between 32°C and 36°C, with extreme outliers reaching 38°C during intense heatwaves linked to the East Asian monsoon pattern. Comparable cases from 2022 and 2023 show temperatures consistently exceeding 34°C, meaning a 0% probability implies the market’s range is either implausibly low or the crowd anticipates an unusually cool day, which contradicts seasonal norms.

Traders should monitor the China Meteorological Administration’s daily forecast updates and Wunderground’s real-time station data, as these are the definitive sources for settlement. A recent report from the Shanghai Daily notes that a persistent high-pressure system is expected to dominate the region through mid-July, increasing the likelihood of temperatures above 35°C [1]. Any divergence between sportsbook-style weather lines and this market’s 0% probability may signal a mispricing, particularly if forecast models confirm the high-pressure trend.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets 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

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 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.

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.