Highest temperature in Chongqing on August 10?

Platform comparison

Market context

Chongqing’s temperature on 10 August is the underlying event, and the market will be settled on the **highest reading in the Weather Underground Daily Observations table** for Chongqing Jiangbei International Airport, not the Day High & Low summary. Current public forecasts point to a very hot day, with AccuWeather showing around **95°F/79°F** and a possible peak near **104°F**, while other forecast sites cluster in the low-to-mid 30s Celsius, which is broadly consistent with Chongqing’s August climate.[2][4][6][9]

That makes the current **0% YES** crowd price look more like a disagreement with the market structure than with the weather itself. On comparable temperature markets, Polymarket-style books typically quote **implied probability** directly, while Kalshi and Betfair often present the same view through **contract price** or **decimal odds**, which can make a sub-50% view easier to compare across venues but less intuitive at the extremes; Smarkets also uses exchange-style pricing, with fees and market access varying by jurisdiction. For a forecast this hot, the key historical frame is that Chongqing regularly sits near the top of China’s summer heat profile, with August averages around the low-to-mid 30s Celsius and frequent short thunderstorms that can cap the afternoon maximum if they arrive early.[3][10][17]

The main catalysts are the timing of any morning convection, cloud cover, and whether showers reach the airport station before the day’s maximum is set, because the settlement depends on the observed table value rather than a headline forecast. Wunderground already shows partly cloudy conditions and a forecast around **95°F**, but traders should watch the station’s live observation updates through the UCT settlement window and any local thunderstorm development, since that can shift the highest recorded temperature materially even after the headline forecast has been published.[2][4][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Chongqing on August 10? 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

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

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.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

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.