Highest temperature in Guangzhou on July 10?

Platform comparison

Market context

Guangzhou on 10 July 2026 will experience its peak summer heat, with the highest temperature recorded at Baiyun International Airport determining the market outcome. Historical data confirms July is one of the hottest months, with daily highs typically ranging from 34°C to 37°C (93–99°F), occasionally exceeding 38°C (100°F) [4]. The average high for July sits at 33°C (91°F), while extreme readings have reached 39°C (102°F) in recent years [5][7]. Given that the current crowd-implied probability for a specific temperature range is 0%, traders must scrutinise whether this reflects a genuine lack of confidence or a pricing inefficiency common across platforms like Polymarket versus Kalshi, where decimal odds and implied probability diverge significantly [2].

Key catalysts include the arrival of typhoons, which frequently influence July weather by bringing heavy downpours and strong winds that can suppress peak temperatures [4]. Traders should monitor the China Meteorological Administration’s daily forecasts and Wunderground’s real-time updates for the Baiyun station, as sudden shifts in cloud cover or rainfall could alter the day’s maximum [3]. Recent news highlights that May 2026 was the hottest in history for Guangzhou, with temperatures reaching 36.3°C, suggesting a trend of intensifying heat that may persist into July [8]. Platform-specific fee structures and KYC requirements also create divergences in liquidity; for instance, Betfair’s commission model versus Smarkets’ zero-commission approach may affect how quickly the 0% probability adjusts to new data, making cross-platform arbitrage a viable strategy for informed participants.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Guangzhou on July 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 UK, 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.

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 UK 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.