Highest temperature in Chongqing on August 3?

Platform comparison

Market context

Chongqing’s airport temperature for 3 August will be set by the day’s *highest observed reading* at Chongqing Jiangbei International Airport Station, so the key question is whether the station touches the sort of severe heat that is common there in early August. Long-run guidance for Chongqing shows August as hot and humid, with average daytime highs around 34°C and frequent days above 40°C, while one August climatology page puts the 3 August historical high at 34.7°C, which keeps the market’s reference point firmly in the mid-30s rather than in a mild-summer regime.[1][17]

That backdrop explains why a 0% YES crowd price is easy to read as a forecast of no meaningful upside to the highest-bin threshold, not as a statement that the airport will be cool. On Polymarket, pricing is shown as implied probability, so a zero-like print means traders think the target temperature band is effectively unreachable; on Kalshi and Smarkets, the same view is usually expressed in price terms but traded through different fee and access structures, with Smarkets typically using decimal-style quotes and exchange fees, while Kalshi and Polymarket rely on US-facing KYC and eligibility constraints that can limit who can participate. Betfair’s exchange model also differs because liquidity and commission matter more than the headline probability, which can make a hot-but-not-extreme forecast look cheaper or richer depending on the book.[10]

For traders, the main catalysts are the live airport observation feed and any short-term convective rain or cloud cover that could cap daytime heating before the settlement window closes at 12:00 UTC. Chongqing forecasts on the day point to very warm conditions, but even small changes in cloud, humidity and storm timing can move the final station maximum by several degrees, and that matters because airport readings can lag city-centre heat when showers or haze suppress the peak.[3][12][16] In practice, the most useful comparison across platforms is whether the book is reacting to the same weather inputs in the same unit convention: Polymarket and Kalshi users will usually think in temperature bands and probability, while Betfair and Smarkets participants may focus on decimal odds, commission drag and whether liquidity is deep enough to fade a late spike in the forecast.[10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Chongqing on August 3? 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

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.

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.

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. 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.