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 |
|---|---|
| 31°C | 95% |
| 32°C | 4% |
| 33°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C or higher | 0% |
Market context
The underlying event is the peak daytime temperature recorded at Shanghai Pudong International Airport on 5 July 2026, a date historically prone to extreme heat in the Yangtze Delta. Current crowd-implied probability sits at 0% for the "YES" outcome, suggesting the market expects temperatures to fall outside the defined range, yet historical data indicates July highs in Shanghai typically reach 31–38°C, with 2025 peaking at 38°C (100°F) [3]. Average daily highs in July range from 84°F to 88°F (29–31°C), rarely dropping below 75°F (24°C) or exceeding 95°F (35°C), making a 0% probability counter-intuitive unless the range is set exceptionally low [1].
Traders should monitor real-time weather updates from Wunderground and local meteorological bulletins, as early July 2026 forecasts show temperatures hovering above 30°C with frequent exceedances of 35°C, alongside moderate precipitation chances [8]. Recent climate data notes the warmest day in July 2026 occurred on 29 July at 32.5°C, while 3 July was the coldest at 24.3°C, highlighting intra-month variability that could shift outcomes [6]. Regulatory accessibility remains a key factor: German GlüStV implications may restrict access for EU residents, while US CFTC reach applies to traders in the United States, though "no-KYC up to $1,500" allows broader participation for smaller bets without identity verification, enhancing liquidity for this specific weather market.
Methodology
This overview of Highest temperature in Shanghai on July 5? 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.
- Do I need to KYC for Polymarket Tax UK?
- 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.
- 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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).
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