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Highest temperature in Chengdu on August 9?

Regulatory snapshot for "Highest temperature in Chengdu on August 9?": platform geo-block status, KYC thresholds, tax implications.

34°C 100% 27°C or below 0% 28°C 0% 29°C 0% Volume: $70K Liquidity: $291K Closes: 9 Aug 2026
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Highest temperature in Chengdu on August 9?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Tax UK) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
34°C100%
27°C or below0%
28°C0%
29°C0%
30°C0%
31°C0%
32°C0%
33°C0%
35°C0%
36°C0%
37°C or higher0%

Market context

Chengdu’s top temperature on 9 August will be judged against the **Daily Observations** entry for Chengdu Shuangliu International Airport Station, not the headline “Day High & Low” figure. That matters because the market settles on the highest Celsius reading logged in the station table, so the tradable question is whether the day’s recorded maximum lands inside the relevant temperature band rather than what any summary widget shows. [3][4]

Historically, Chengdu is a warm, humid August city, with average highs around 30°C and record 9 August highs well above that, including 38.1°C on the date-specific history page and 39°C in broader historic records. Comparable weather-history pages also show that early-August highs often sit in the low 30s, which makes the current 0% implied probability look like an extreme pricing outcome rather than a reflection of the climate baseline. [1][10][16]

For catalysts, the main watchpoints are the airport station’s live observations, any late-day spike in heat before the settlement cutoff, and whether showers or cloud cover cap the afternoon maximum; current forecast pages point to a high around 33–34°C for 9 August. [1][20] On access, a “no-KYC up to $1,500” structure generally means smaller positions can be entered without identity verification until cumulative activity crosses that threshold, but for German users GlüStV rules can still affect whether the market is legally accessible, while US persons may face CFTC reach if the product is treated as a derivatives-style event contract.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Chengdu on August 9? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

UK Frequently Asked Questions

How are winnings taxed?
Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
Is Polymarket regulated by the UKGC?
No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
What are the HMRC tax rules on Polymarket profits for UK traders?
Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
Does Polymarket KYC apply to UK users?
Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
What is the legal difference between Polymarket and Betfair Exchange for UK traders?
Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
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