Highest temperature in Chengdu on August 18?

Platform comparison

Market context

On 18 August 2026, the highest temperature recorded at Chengdu Shuangliu International Airport Station will determine this market's settlement. The resolution hinges on the Daily Observations table in Weather Underground's historical data, not the summary Day High & Low figures, a distinction that matters when discrepancies arise between automated station readings and processed summaries. Chengdu's August climate typically peaks between 32–36 °C, though extreme heat events have pushed readings above 40 °C in recent summers across the Sichuan basin.

Historical August temperatures at Chengdu Shuangliu show considerable year-to-year variance. The 2022 heatwave saw temperatures exceed 40 °C on multiple days; conversely, cooler Augusts have settled in the 28–32 °C range. The 0% crowd probability reflects either extreme confidence in a specific temperature band or sparse trading activity on this granular weather derivative. Comparable airport-station markets typically see probability distributions flatten as settlement approaches, particularly when local meteorological data becomes more certain within 48 hours of the event date.

Traders should monitor China Meteorological Administration forecasts and real-time station data from late August 2025 onwards, as summer monsoon patterns and any tropical cyclone activity affecting southwestern China could shift baseline expectations. The settlement window closes at 12:00 UTC on 18 August 2026, allowing only morning-local-time readings to count. Under German GlüStV frameworks, weather derivatives face classification scrutiny; US CFTC jurisdiction typically excludes pure weather contracts, though cross-border traders should verify domicile rules. The no-KYC threshold of $1,500 applies to this market's accessibility in certain jurisdictions, though verification requirements vary by platform and user location.

Methodology

This overview of Highest temperature in Chengdu on August 18? 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.

FAQ

Is Polymarket legal in my country?

Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Polymarket Legal in Canada has a different geo footprint.

Do I need to KYC for Is Polymarket Legal in Canada?

Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.

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.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

Is there a withdrawal cap?

No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).