Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
95% | 5% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
95% | 5% | 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.
| Outcome | Probability |
|---|---|
| 32°C | 95% |
| 33°C | 6% |
| 34°C | 1% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 35°C or higher | 0% |
Market context
The real-world event driving this market is the peak daytime temperature recorded at Guangzhou Baiyun International Airport on 6 July 2026, a date historically synonymous with extreme heat in Guangzhou’s subtropical monsoon climate. July is the city’s hottest month, with average highs around 33°C and extremes frequently surpassing 38°C, while humidity often exceeds 80%, intensifying the thermal stress[1][4][6]. The current crowd-implied probability of 0% YES suggests traders believe the temperature will fall outside the specific range offered, likely due to expectations of either a cloud-covered day or a typhoon-induced dip, despite the seasonal norm of torrid conditions[1][8].
Historical patterns show that while July temperatures in Guangzhou rarely drop below 28°C, sudden shifts occur when typhoons arrive from July to September, bringing frequent thunderstorms and temporary cooling[1]. Comparable cases include the record-breaking summer of 2023, when Guangzhou experienced its longest summer since 1961, yet still saw brief temperature dips during heavy downpours[7]. Traders should watch the China Meteorological Administration’s weekly typhoon bulletins and the National Weather Service’s 72-hour forecasts for Guangzhou, as a single storm system could invalidate the 0% probability assumption[1]. A recent report from Xinhua News Agency confirmed Guangzhou’s summer days have reached record levels, reinforcing the baseline heat but also highlighting the volatility introduced by monsoon rains[7].
For accessibility, this market operates under a regulatory framework where German GlüStV (Gaming State Treaty) implications limit unlicensed betting, while US CFTC reach extends oversight to prediction markets involving US participants. The “no-KYC up to $1,500” provision allows traders to access this market without identity verification, provided their total exposure remains below that threshold, enhancing liquidity for retail participants while maintaining compliance with anti-money laundering standards. This structure ensures that traders can engage with the temperature outcome without bureaucratic hurdles, though they must remain aware of jurisdictional limits when settling positions.
Methodology
This overview of Highest temperature in Guangzhou on July 6? 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. Polymarket Tax UK has a different geo footprint.
- 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. Polymarket Tax UK 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.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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