Highest temperature in Guangzhou on August 17?

Platform comparison

Market context

On 17 August 2026, the highest temperature recorded at Guangzhou Baiyun International Airport will determine this market's settlement. The resolution hinges on data from Weather Underground's Daily Observations table—the granular, station-level record rather than summary high-low figures—making measurement precision and source consistency critical to accurate settlement.

Guangzhou's August climate is characterised by intense summer heat and high humidity. Historical August maxima at Baiyun typically range between 32–35°C, though readings above 36°C occur in roughly one-third of years during heat-wave episodes. The 0% crowd probability suggests traders are either pricing in unusually cool conditions for mid-August or treating the market as illiquid and difficult to calibrate. Comparable August temperature markets in subtropical Asian cities show that extreme heat events (38°C+) materialise infrequently enough to command meaningful odds, whilst baseline summer temperatures cluster predictably within established ranges.

Traders should monitor China Meteorological Administration forecasts released in early August 2026, which typically provide 10–14 day outlooks. El Niño or La Niña conditions active in the Pacific during mid-2026 will influence regional pressure patterns and heat intensity. Real-time tracking of upper-atmosphere ridge positioning and tropical moisture influx from the South China Sea in the days immediately preceding 17 August will sharpen probability estimates. Weather Underground's station data feed has historically remained reliable for Baiyun, though occasional sensor maintenance or calibration adjustments warrant verification closer to settlement.

Methodology

This overview of Highest temperature in Guangzhou on August 17? 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

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.

Can I trade anonymously?

Pseudonymously, yes — up to the KYC threshold. Is Polymarket Legal in Canada stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.

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).

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Polymarket Legal in Canada would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.