Pronóstico: Highest temperature in NYC on July 6?

Platform comparison

Market context

The underlying real-world event is the peak heat recorded at LaGuardia Airport on 6 July 2026, specifically the highest temperature in degrees Fahrenheit across all times of that day. Polymarket prices this contract today with a 0% implied probability for the YES outcome, suggesting the crowd believes the temperature will not reach the threshold required for a win. This on-chain pricing reflects a market consensus that the day will remain below the critical range, despite the platform’s use of USDC on the Polygon network and conditional tokens that allow traders to speculate on specific temperature bands.

Historical precedents frame how to interpret this current probability. LaGuardia recently set a record for the hottest midnight temperature in New York City history, reaching 94 degrees at midnight, while the airport hit 102 degrees earlier in the day during a severe heat wave[1][3]. July 2026 forecasts for LaGuardia show daily highs ranging from 81° to 99°, with overnight lows between 65° and 75°[7]. These comparable cases indicate that while extreme heat is possible, the 0% probability may be overly cautious if the day mirrors the recent 104-degree spike recorded at the same station[3].

Traders should monitor upcoming weather announcements and heat wave schedules, as dependencies like urban heat retention and humidity levels can drive temperatures higher. A recent FOX Weather report highlighted how the record-setting heat lingered into the night, breaking daily high-temperature records and pushing midnight readings to unprecedented levels[1]. Watch for updates from Wunderground, the official resolution source, which will publish the highest temperature recorded for all times on 6 July[8]. Any sudden shifts in forecast models or official advisories could alter the market’s perception of risk before the settlement window closes on 2026-07-06.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.