Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal 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.
| Outcome | Probability |
|---|---|
| 25°C | 100% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C or higher | 0% |
Market context
The relevant real-world event is the highest temperature recorded at Paris-Le Bourget Airport on 23 July 2026, with settlement tied to the Wunderground daily-history page for that station. With the market currently implying 0% for **YES**, the pricing is signalling that traders see the eventual daily maximum as falling outside the relevant bracket or that the listed bracket set is already effectively locked in, which makes this a probability market driven more by the day’s actual maximum than by intraday volatility.[1]
Historically, late July in Paris is among the warmest parts of the year: July average highs are around 27.0°C, and typical daily highs in Paris are commonly cited near 26°C, with occasional much hotter days extending well above 30°C.[2][3] That makes a 25°C outcome consistent with an average summer day rather than a heatwave, while any sustained southerly flow or continental heat ridge would be the usual reason a higher bracket becomes relevant. For a **German GlüStV** reading, access constraints matter because the regime treats online gambling and many games of chance tightly; by contrast, US **CFTC** exposure can arise where a platform is offering event-based derivatives to US persons, even if the underlying event is weather rather than sport. The practical meaning of **“no-KYC up to $1,500”** for this market is straightforward: users can typically enter limited-size positions with lighter identity checks, but the threshold does not remove jurisdictional restrictions or platform-level compliance screening.
The main catalysts are meteorological rather than corporate: forecasts for the Paris area, any heat advisory from French or regional weather services, and the day’s actual temperature path at Le Bourget Airport. In a market settled on the station’s highest reading, the key dependency is whether the afternoon peak is reached before the reporting day ends in local time, not where the temperature sits earlier in the session. Any late-day model shift that changes the expected maximum by a few degrees can matter materially, especially because the market is already pricing one outcome at 100%.[1]
Methodology
This overview of Highest temperature in Paris on July 23? 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 Legal UK has a different geo footprint.
- Do I need to KYC for Polymarket Legal 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Legal 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).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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