Highest temperature in Shanghai on July 16?

Platform comparison

Market context

Shanghai Pudong International Airport is forecast to reach a maximum of 36°C today, 16 July 2026, with scattered showers and thunderstorms expected in the afternoon [2]. Rain is anticipated with a 90% probability of precipitation, potentially suppressing peak temperatures compared to dry, sunny conditions [1]. The current crowd-implied probability of 0% for the YES outcome suggests traders believe the temperature will fall outside the specific range being bet on, likely due to this wet weather disrupting the typical July heatwave pattern.

Historically, mid-July in Shanghai often sees highs between 35°C and 39°C, but cloud cover and rain significantly reduce these peaks. A comparable case is the July 15 market, where the frontrunner was 39°C at 100% probability, indicating a clear hot day without the rain forecast for today [3]. This divergence highlights how Polymarket’s implied probability model reacts instantly to weather shifts, whereas platforms like Kalshi or Betfair might still display decimal odds that lag slightly in reflecting real-time meteorological updates. Traders should note that fee structures and KYC requirements differ across these books, affecting liquidity and execution speed on such volatile weather events.

Key catalysts include the timing of afternoon thunderstorms and wind direction, which could further lower temperatures. The settlement relies on Wunderground data from the Pudong station, so any discrepancy in reporting times or sensor errors could impact resolution. While no major announcements are pending, the immediate weather schedule is the primary dependency. For those comparing platforms, Polymarket’s decimal-free probability display offers a clearer view of crowd sentiment than Kalshi’s odds-based format, though Smarkets may offer lower fees for high-volume traders. The wet conditions today make a high-temperature outcome unlikely, aligning with the 0% probability.

Sources: 1 · 2 · 3 · 4

Methodology

This page compares Highest temperature in Shanghai on July 16? 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.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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.