Highest temperature in NYC on August 10?

Platform comparison

Market context

The question centres on whether the highest temperature recorded at LaGuardia Airport on 10 August 2026 will fall within a specific range. The market's 2% implied probability suggests traders assess this outcome as unlikely, though the exact range threshold remains critical to interpreting that signal. Resolution hinges on Weather Underground's Daily Observations table rather than the Day High & Low summary—a distinction that occasionally produces material differences in recorded extremes, particularly during volatile weather events or sensor transitions.

New York's August climate typically produces highs between 28–32°C (82–90°F), with extreme readings above 35°C (95°F) occurring in roughly 5–10% of years historically. The 2022 heat dome pushed LaGuardia to 37.2°C (99°F), whilst the 1990s and early 2000s saw multiple years exceed 37°C. The current 2% probability implies the market is pricing for a threshold considerably above typical August maxima—likely 37°C or higher. Comparable platforms show divergence here: Kalshi's binary structure forces sharper probability calibration than decimal-odds books like Betfair, where fractional pricing can obscure marginal shifts in trader conviction.

Traders should monitor National Weather Service seasonal forecasts released in July 2026 and any Atlantic hurricane activity that could suppress temperatures or create anomalous heat patterns. Long-range climate indices (ENSO, NAO) influence August weather regimes substantially. Fee structures across platforms matter less on single-outcome weather markets than on multi-leg trades, though Polymarket's Ethereum-based settlement and Kalshi's regulatory framework create different liquidity profiles for weather-specific positions.

Methodology

This page compares Highest temperature in NYC on August 10? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.