Highest temperature in Shanghai on July 6?

Platform comparison

Market context

On 6 July 2026, the Shanghai Pudong International Airport Station will record its peak temperature for the day, a real-world event that determines the outcome of a prediction market currently pricing a 0% chance of a “YES” result. This implies the market expects the high to fall outside the 33°C+ range, despite historical patterns suggesting July is Shanghai’s hottest month, with average highs near 87°F (30.6°C) and frequent days exceeding 30°C [3][4].

Historical data frames the current probability as unusually conservative. In 2013, Shanghai hit a record 40.8°C, and a preliminary 40.9°C was recently monitored, indicating that extreme heat is not just possible but documented [7]. Moreover, meteorological reports confirm this summer is China’s hottest since 1961, raising the likelihood of temperatures surpassing 33°C more than the market’s 0% implied probability suggests [9]. While Polymarket traders cluster tightly around 32–34°C, the sportsbook lines and analyst consensus appear to diverge, with some models assigning higher odds to extreme heat than the prediction market currently reflects [1].

Traders should monitor real-time weather updates from Wunderground and the National Weather Service, which already show early morning temperatures at 79°F (26.1°C) with 100% humidity and southerly winds [2]. The key catalyst is whether afternoon convection and the ongoing heatwave push temperatures above 33°C, a threshold that could invalidate the current 0% pricing. With no official announcements altering the forecast, the dependency remains on natural atmospheric conditions, making this a high-uncertainty contract where the market’s implied probability may lag behind emerging data.

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 Best Prediction Markets, 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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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?

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