Highest temperature in Beijing on August 10?

Platform comparison

Market context

Beijing’s highest temperature on 10 August will be set by the day’s actual peak reading at Beijing Capital International Airport, not by the broader “Day High & Low” summary, so traders should focus on the station’s intraday observations rather than citywide headline weather. Early readings already point to a warm summer day: Weather Underground showed 77°F at midnight local time, while 10-day and historical guides put early-August Beijing around the low 30s Celsius at the daily maximum.[2][13][17]

For context, Beijing is usually hot in August, with average highs around 30.6°C to 31°C and several recent 10 Augusts landing in the low-to-mid 30s Celsius. Comparable histories show 10 August maxima of roughly 33°C to 34°C in recent years, which helps explain why a 0% crowd-implied probability looks unusually pessimistic versus seasonal norms; on Polymarket, the same market is quoted in decimal-style outcome pricing with the leading bucket at 33°C, whereas Kalshi, Betfair and Smarkets typically present odds in different formats and with different fee and access structures.[1][5][15][17]

The main catalysts are the daytime forecast trend, any precipitation or cloud cover over northern Beijing, and whether airport observations are revised after the fact before the following day’s first datapoint appears. The public forecast at 08:00 UTC suggested a sunny 91°F/65°F day with 0% rain chance, which would normally favour a mid-30s Celsius high if realised, but short-term shifts in cloud, wind or showers can still cap the peak.[13][15][16] On venue choice, Polymarket is generally accessible more broadly than UK-regulated books, while Betfair and Smarkets tend to require stronger KYC and charge commission-style fees, so the same weather view can translate into different all-in pricing even when the underlying temperature call is identical.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Beijing 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 UK, 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.

UK Frequently Asked Questions

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.

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.

Polymarket vs Betfair Exchange: which is better for UK prediction trading?

Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.

Is Kalshi available in the UK?

Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.