Highest temperature in Chengdu on July 16?

Platform comparison

Market context

Chengdu faces sweltering heat today, with partly sunny skies and widely separated thunderstorms expected this afternoon, creating conditions for extreme temperatures at the Shuangliu International Airport Station. The current crowd-implied probability of 0% for a specific outcome on Polymarket appears to reflect a misunderstanding of the market’s multi-outcome structure, as the frontrunner is actually 37°C at 35% probability, closely followed by 38°C at 34% [1]. This divergence highlights how Polymarket uses implied probability for each discrete range, whereas platforms like Kalshi, Betfair, and Smarkets typically display decimal odds, requiring traders to convert between formats when comparing liquidity and pricing across books.

Historical July temperatures in Chengdu frequently exceed 35°C, with recent years showing peaks between 36°C and 39°C, making the 0% figure for any single range statistically anomalous unless it refers to an outlier range not currently active [1]. Traders should monitor Accuweather’s RealFeel readings, which already hit 97°F (36.1°C) by 10:07 AM, alongside official Wunderground data for the airport station, the designated resolution source [2]. No immediate announcements or schedules are pending, but the dependency on real-time temperature logs means volatility will spike as the day progresses, particularly if thunderstorms fail to suppress the heat index.

Fee structures and KYC requirements further differentiate these platforms: Polymarket often charges lower fees but enforces stricter identity verification for certain jurisdictions, while Kalshi demands full US compliance, and Betfair/Smarkets offer broader global access with varying commission models. These operational differences can create pricing inefficiencies on weather markets like this one, where regional data access and settlement speed vary by book.

Sources: 1 · 2

Methodology

This page compares Highest temperature in Chengdu 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 Kalshi Alternative, 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

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. Kalshi Alternative 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. Kalshi Alternative 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.