Highest temperature in Shanghai on July 1?

Platform comparison

Market context

The real-world event is the peak heat recorded at Shanghai Pudong International Airport on 1 July 2026, a date falling squarely in the region’s hottest month. Historical data confirms July is Shanghai’s warmest period, with average highs near 31°C (87°F) and frequent spikes to 35°C (95°F) under clear skies [1][3]. Daily highs in July rarely dip below 24°C (75°F) or exceed 35°C (95°F), making extreme cold implausible [3]. The current crowd-implied probability of 0% for a “YES” outcome (presumably a specific high-temperature threshold) suggests the market believes the threshold is unattainable, yet this contradicts the consistent summer heat profile where temperatures regularly surpass 30°C [7].

Consensus leans heavily toward the threshold being too high, but value may sit contrarian if the market underestimates the likelihood of a 35°C+ day, which occurs in Shanghai’s most sunny weather [7]. Traders should monitor the 72-hour forecast from AccuWeather, which projects daily highs between 27°C and 34°C (80°F–93°F) for July 2026, with overnight lows of 23°C–28°C (74°F–82°F) [8]. No major weather announcements are scheduled, but dependencies include the absence of cloud cover or rain, which historically suppress peak temperatures. The settlement window ends 12:00 UTC on 1 July 2026, so real-time Wunderground data will be the definitive resolution source [9]. Given the historical frequency of 35°C days, the 0% probability appears overly dismissive of the underdog scenario.

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 Who Will Win 2026, 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 Who Will Win 2026. 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.

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.