Highest temperature in Chongqing on August 4?

Platform comparison

Market context

Chongqing’s hottest reading on 4 August will be taken from the Jiangbei International Airport station, and August is normally the city’s peak heat month, with average highs around 34°C and some guides warning of extreme highs in the high 30s to low 40s.[2][6][9] That makes a mid-30s outcome the statistical centre of gravity, while anything above 38°C would sit in the upper tail for a routine summer day rather than an outlier during a heatwave.[6][13]

The current 0% YES crowd price on the platform looks more like a market-making artefact than a strong forecast, because the underlying weather regime remains the dominant driver and the settlement source is a single station reading rather than a citywide average.[12] Recent reporting has already described residents in Chongqing seeking shelter as heat has intensified, which supports watching the local synoptic pattern, official warnings, and afternoon convective cloud or rain that can cap the day’s maximum.[17][10] For platform comparison, Polymarket-style displays typically show implied probability directly, whereas Kalshi, Betfair and Smarkets-style books may quote decimal odds or prices that translate differently once fees are applied; on a thin weather market, those fee and access differences matter more than the headline number, especially where KYC reach limits who can trade and how quickly sentiment can reprice.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Highest temperature in Chongqing on August 4? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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.

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.

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.