Highest temperature in Shanghai on July 5?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded on 5 July 2026 at Shanghai Pudong International Airport, measured in degrees Celsius. On Polymarket today, this contract trades with a 0% implied probability for the "YES" outcome, suggesting the market believes the temperature will fall outside the specific range defined by the bet. This pricing reflects a stark divergence from historical norms, where July highs at this station typically range between 26°C and 31°C, often peaking near 38°C in recent years like 2025[2].

Historical data frames this current probability as an outlier rather than a baseline. Average daily highs in July at Pudong increase from 84°F to 88°F (roughly 29°C to 31°C), rarely dropping below 75°F (24°C) or exceeding 95°F (35°C)[1]. The warmest day in July usually occurs around 29 July, reaching 32.5°C, while early July days like 3 July can be cooler at 24.3°C[4]. Given that 5 July sits in the early, warming phase of the month, a 0% probability implies the market expects a temperature far outside this established 24°C–35°C band, which contradicts the typical muggy, sunny conditions of Shanghai in July[2].

Traders should monitor immediate weather forecasts and any sudden shifts in regional cloud cover or precipitation, as early July 2026 still sees significant rainfall potential that could suppress peak temperatures[6]. The settlement relies on Wunderground data for the highest temperature recorded at any time on that day, making the 3 PM peak heat window critical for resolution[2]. While no specific announcement has altered the forecast yet, the dependency on real-time sensor data means traders must watch for updates from the National Weather Service or local meteorological bureaus that might indicate an unexpected heatwave or cooling front before the settlement window closes on 12:00 UTC on 5 July 2026[3].

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

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 PolyGram. 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.

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.

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.