Lowest temperature in Shanghai on July 19?

Platform comparison

Market context

Shanghai's lowest temperature on 19 July 2026 will be recorded at Pudong International Airport Station and settled via Wunderground historical data. The market currently shows 0% implied probability across the range, suggesting either extreme confidence in a specific temperature band or insufficient liquidity to establish meaningful odds. Settlement occurs at 12:00 UTC on that date, capturing the full 24-hour low for the day.

July represents peak summer in Shanghai, with historical lows typically ranging between 24–28°C during this period. The city's subtropical climate produces consistent warm nights even at seasonal troughs, making extremely low temperatures highly unlikely. Comparable markets on major platforms reveal divergent approaches: Polymarket displays decimal odds with tighter spreads on weather events, whilst Kalshi's binary structure forces traders into broader outcome buckets. Betfair's historical weather markets show similar clustering around modal outcomes, with tail probabilities often trading at near-zero levels when conditions make them implausible. The 0% reading here reflects rational pricing rather than market dysfunction.

Traders should monitor China Meteorological Administration forecasts released in early July, which typically provide 10-day outlooks with reasonable accuracy for Shanghai. Any unusual weather systems—tropical cyclones or cold fronts—would shift probabilities materially, though such events remain statistically rare during mid-July. Wunderground's data feed has proven reliable for Shanghai airport readings, though traders should verify the specific station designation (ZSPD) matches their expectations before committing capital. Cross-checking against local Shanghai weather services provides additional confidence in settlement mechanics.

Methodology

This page compares Lowest temperature in Shanghai on July 19? 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

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

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.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

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.