Highest temperature in Guangzhou on August 10?

Platform comparison

Market context

Guangzhou’s **highest temperature** on 10 August will be set by the Weather Underground **Daily Observations** for Guangzhou Baiyun International Airport Station, not the day-high summary, so traders should focus on the observed intra-day peak rather than a forecast headline. Current public forecasts cluster in the mid-to-high 30s Celsius: AccuWeather shows a 36–38°C day, Weather.com.cn also points to **36°C**, and other travel/weather sites are broadly in the same range, which leaves the market’s 0% YES price well below the prevailing weather consensus.[4][7][8][15]

On comparable Guangzhou summer days, the useful question is not whether it will be hot, but which exact temperature bucket the peak observation lands in. August is climatologically the city’s hottest month, with typical highs around 33–34°C, while model guidance and recent forecast pages have been running hotter than average because clear or partly cloudy conditions can allow stronger daytime heating.[2][14][18] On Polymarket, pricing is shown as implied probability, whereas on Kalshi and Betfair the same outcome would usually be expressed in price or decimal-odds terms; that matters here because a 0% implied chance can still hide very low-liquidity bids rather than a literal certainty. Fees and access also differ: Polymarket is crypto-native, while Kalshi and Betfair require standard account onboarding and KYC, with Betfair’s exchange model also introducing commission on winnings.

The main catalysts are the midday and early-afternoon readings at Baiyun Airport, plus any late update from the source page before the settlement window closes. Weather Underground’s station feed is the decisive source for this market, so a brief spike from sea-breeze disruption, cloud break-up, or convection can matter more than the day’s forecast label. If the observed peak is already near a threshold by late morning, traders will be watching whether Guangzhou can reach the next 1°C band before the first post-12:00 UTC observation that locks in the result.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Guangzhou 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 Robinhood Prediction Markets, 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

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.

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. Robinhood Prediction Markets 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.