Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax 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 |
|---|---|
| 76-77°F | 100% |
| 67°F or below | 0% |
| 68-69°F | 0% |
| 70-71°F | 0% |
| 72-73°F | 0% |
| 74-75°F | 0% |
| 78-79°F | 0% |
| 80-81°F | 0% |
| 82-83°F | 0% |
| 84-85°F | 0% |
| 86°F or higher | 0% |
Market context
The key real-world event is the highest temperature recorded at LaGuardia Airport on 30 July 2026, with settlement tied to the Wunderground history page for KLGA. The current crowd-implied probability of 0% YES suggests the market is pricing the outcome as either already very unlikely or effectively settled against the YES range, although the final answer depends on the exact Fahrenheit band chosen in the contract.
For context, New York City in late July often posts highs in the upper 80s Fahrenheit, and forecast pages for 30 July 2026 pointed to a daily high around 87–88°F rather than an extreme spike. Comparable July heat events have produced sharper moves, including the early-July 2026 North American heat wave that pushed New York to 100°F and triggered widespread media coverage, but that was a different part of the month and a different reference point. The contrast matters because this market is about the single hottest reading at one airport station, not the citywide daily average or a forecast high.
From a regulatory and access standpoint, this is the sort of weather market that can sit in a grey zone between informational forecasting and gambling-style activity. German GlüStV rules can matter because many weather-linked contracts may be treated as gaming-like products if they are accessible to users in Germany, while the US CFTC’s reach is relevant where a market resembles a derivative or event contract on a temperature outcome. “No-KYC up to $1,500” means a user may be able to trade without full identity verification until cumulative activity crosses that threshold, but it does not remove territorial restrictions, tax reporting duties, or the possibility that access is limited by jurisdiction and platform policy.
Methodology
This overview of Highest temperature in NYC on July 30? 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.
- 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), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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