Highest temperature in Shanghai on July 5?

Platform comparison

Market context

The real-world event in question is the highest temperature recorded on 5 July 2026 at Shanghai Pudong International Airport, measured in degrees Celsius and sourced from Wunderground. Historical data confirms that July is Shanghai’s hottest month, with daily highs typically ranging from 84°F to 88°F (29°C–31°C), rarely dipping below 75°F (24°C) or exceeding 95°F (35°C)[1][9]. Summer conditions regularly push temperatures above 30°C, often reaching 35°C during peak sunshine[7]. Given this seasonal norm, a crowd-implied probability of 0% for any outcome above 30°C appears inconsistent with both climatic records and current Polymarket pricing, where “30°C” leads at 43% and “31°C” follows at 25%[2]. This divergence suggests a notable misalignment between prediction-market odds and established weather patterns.

Traders should monitor incoming ensemble forecasts from global models, which currently cluster peak readings near seasonal norms for early July in eastern China[3]. Recent thunderstorm activity and high humidity levels—BBC Weather reports 84% humidity and thundery showers for Hongqiao on 5 July—may suppress daytime highs slightly, though Pudong often experiences marginally higher temperatures due to its coastal exposure[5]. The settlement window closes at 12:00 UTC on 5 July 2026, so real-time updates from Wunderground and National Weather Service observations will be critical[4]. Any deviation from the expected 29°C–31°C range would signal an anomaly, but current data strongly supports outcomes within this band, making the 0% probability for higher temperatures appear unjustified.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on July 5? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

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.

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.