Highest temperature in Shanghai on July 2?

Platform comparison

Market context

On 2 July 2026, Shanghai Pudong International Airport will record its peak temperature for the day, a single data point that determines the outcome of a weather prediction contract. The crowd-implied probability of a "YES" resolution sits at 0%, suggesting the market expects the temperature to fall outside the specified range, despite historical patterns that typically see July highs in Shanghai reaching 30°C or more.

Historical data frames this near-zero probability as an outlier. July 2026 forecasts for the airport indicate daily highs ranging from 80°F to 93°F (27°C to 34°C), with the month's average peak hitting 32.5°C on 29 July[4][5]. Comparable cases from June 2026 show highs between 78°F and 89°F, confirming that temperatures rarely dip below the 27°C threshold in mid-summer, making the 0% implied probability a significant divergence from the analyst consensus on regional climate norms[2].

Traders should monitor real-time weather updates from Wunderground and the National Weather Service for the ZSPD station, as sudden shifts in cloud cover or humidity could alter the peak reading[1]. While no specific weather announcements are scheduled for 2 July, the dependency on the 24-hour high temperature record means any unforecasted rain event could suppress the peak below the range. Recent prediction data for similar Shanghai contracts shows live odds fluctuating based on these micro-climatic dependencies, highlighting the need for constant vigilance on the settlement source[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shanghai on July 2? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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

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 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 Kalshi vs Polymarket 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.