Highest temperature in Shanghai on July 6?

Platform comparison

Market context

The real-world event driving this market is the peak daytime heat expected at Shanghai Pudong International Airport on 6 July 2026, where temperatures routinely climb into the low-to-mid 30s Celsius. In the last 24 hours, overnight lows have settled near 25–26°C, reinforcing the collective view that the day’s maximum will not breach the 30°C threshold required for a "YES" outcome in the current range, hence the crowd-implied 0% probability.

Historical patterns for early July at this station show daily highs typically ranging from 30–38°C, with extreme peaks reaching 40°C in some years, yet the market’s tight clustering around 32–34°C suggests traders are anchoring to the median rather than the outlier. This aligns with data indicating that July 6 is not the month’s hottest day—July 29 holds the highest average high at 38°C (88°F)—making a record-breaking spike on this specific date statistically improbable without a major weather anomaly.

Traders should monitor the Shanghai Meteorological Bureau’s 48-hour forecast updates and any sudden shifts in the East Asian monsoon, which could alter humidity and cloud cover. A recent report from China Highlights notes that the plum rainy season ends in July, reducing rainfall but increasing humidity to 76%, which often traps heat and elevates daytime temperatures. Watch for official announcements on heatwave advisories scheduled for release by 10:00 AM local time, as these often precede sharp temperature movements.

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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 Prediction Today, 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 Prediction Today. 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.