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 |
|---|---|
| 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 event is whether the **highest temperature at LaGuardia Airport** on 30 July 2026 lands in the settlement band used by the market, with the outcome taken from Wunderground’s daily history for KLGA. The crowd has priced **0% YES**, which implies either that traders think the relevant high will miss the queried range or that liquidity is too thin to move the market off a stale quote; either way, the price is not consistent with an extreme-heat expectation in New York on that date.
Recent July comparables point to a hot but not unprecedented New York pattern. AccuWeather’s monthly page for New York City shows highs of about **88°F** on 28 July, **87°F** on 30 July and **83°F** on 31 July, while weather monitor data for New York in July 2026 shows daily maximums in the upper-80s to low-90s on some dates. Broader regional reporting also placed New York inside a major North American heat episode in early July, with the city reaching **100°F** during that spell, which is a useful reference for understanding how quickly probabilities can reprice when forecasts move.
For a trader, the key catalysts are the afternoon forecast cycle, any National Weather Service updates, and whether late-day convective cloud, sea-breeze effects or rain suppress the airport high versus central Manhattan readings. Since the settlement source is specifically KLGA, airport microclimate matters more than the citywide headline; one degree can decide the band. On access, a **no-KYC up to $1,500** policy generally means smaller accounts can participate without identity checks until that threshold is crossed, which lowers entry friction but does not remove other platform limits. For users in Germany, the **GlüStV** framework can affect whether such wagering-style products are locally offerable or promotable, while the **US CFTC** generally has reach over event contracts with US nexus, so venue and user location remain relevant to accessibility and compliance.
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
- 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 Legal 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 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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