Highest temperature in Shanghai on July 2?

Platform comparison

Market context

Shanghai’s July climate is defined by intense heat, mugginess, and frequent sunshine, with daily highs typically peaking around 3 PM. Historical data shows average temperatures ranging from 26–31°C, while extreme days have reached 38°C in recent years[1]. The current crowd-implied probability of 0% for a specific temperature range on 2 July 2026 suggests the market expects conditions to fall outside that narrow band, likely due to the region’s consistent pattern of highs exceeding 30°C and often surpassing 35°C during daytime[6].

Comparable cases from previous summers frame this probability: July 2025 saw a peak of 38°C, and forecasts for July 2026 indicate highs between 80–93°F (27–34°C), with overnight lows rarely dipping below 23°C[1][5]. This historical consistency means traders should treat the 0% line not as a prediction of cold weather, but as a signal that the specific range offered is misaligned with typical July extremes. Analysts note that Shanghai’s humidity and urban heat effect regularly push temperatures well above 30°C, making low-range contracts inherently risky[6].

Traders must monitor real-time weather updates from Wunderground for the Shanghai Pudong International Airport Station, as sudden shifts in cloud cover or rainfall could alter the day’s peak[1]. Recent reports confirm Shanghai Pudong Airport handled over 15 million passenger trips in the first five months of 2026, indicating stable operational conditions that support consistent weather data collection[7]. No major climate announcements are scheduled, but traders should watch for any unexpected monsoon activity or heatwave declarations, which could push temperatures beyond forecasted ranges and invalidate the current 0% implied probability.

Sources: 1 · 2 · 3 · 4 · 5

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 PolyGram, which mirrors the Polymarket order book directly.

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

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.