Highest temperature in Shanghai on July 2?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded at Shanghai Pudong International Airport on 2 July 2026, measured in degrees Celsius. Today, Polymarket prices the YES contract for this specific temperature range at 0%, implying the crowd believes the event will not occur within the defined bounds. This conditional token, settled in USDC on the Polygon network, reflects a market that has effectively dismissed the possibility of the temperature hitting the target range, despite the on-chain mechanics allowing for immediate liquidity entry.

Historically, July is Shanghai’s hottest month, with average highs reaching 87°F (30.6°C) and summer peaks regularly exceeding 30°C, occasionally climbing to 35°C during sunny spells [3][5]. Recent data from Hongqiao Airport shows a high of 29°C on 2 July 2026, while June 2026 forecasts for Pudong indicated daily highs between 78°F and 89°F (25.6°C–31.7°C) [2][9]. The 0% probability appears inconsistent with these comparable cases, suggesting the market may be misreading the temperature range definition or reacting to an outlier forecast not yet visible in public historical aggregates.

Traders should monitor the official Wunderground daily update for Pudong Airport, which resolves the market at 12:00 UTC on 2 July, and watch for any sudden announcements regarding the Shanghai Suburban Railway’s Airport Link Line, which opened in late 2024 and could influence local microclimate readings [7]. No immediate weather announcements have been issued, but the dependency on real-time sensor data from Wunderground means traders must verify the temperature setting is in Celsius, as the gear icon allows switching between °F and °C [2]. A recent forecast from Accuweather confirms June’s high variability, reinforcing the need to watch for sudden heat spikes that could invalidate the current 0% pricing [9].

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 Polymarket Scam?. 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.

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 Polymarket Scam? 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.