Highest temperature in Shanghai on July 5?

Platform comparison

Market context

The real-world event hinges on the peak temperature recorded at Shanghai Pudong International Airport on 5 July 2026, a date historically synonymous with intense summer heat in eastern China. Current crowd-implied probability for the market sits at 0% YES, suggesting traders believe the temperature will fall outside the specific range being wagered on, despite the location’s reputation for scorching conditions.

Historical data frames this probability with nuance: July is Shanghai’s hottest month, with average highs reaching 87°F (30.5°C) and daily peaks rarely dropping below 75°F (23.9°C) or exceeding 95°F (35°C)[1][2]. Summer climates regularly exceed 30°C, reaching 35°C during sunny spells[5]. This consistency implies that a 0% probability likely reflects a mismatch in the range definition rather than an expectation of cold weather, a divergence where platforms like Polymarket (decimal odds) and Kalshi (implied probability) may interpret risk differently due to fee structures and KYC requirements.

Traders should monitor incoming severe thunderstorm clusters and temperature record announcements, as these weather events can cause rapid fluctuations in peak readings[3]. Recent forecasts indicate warm conditions with a maximum of 31°C expected on Monday, alongside light rain and generally light winds[7]. The resolution source remains Wunderground’s daily high for ZSPD, making real-time meteorological updates critical for assessing whether the market’s 0% stance holds as the settlement window closes on 5 July 2026 at 12:00 UTC.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Shanghai on July 5? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.