Highest temperature in Istanbul on July 22?

Platform comparison

Market context

Polymarket currently prices the contract with **31°C** as the clear leader at **90%**, while **32°C** sits at **10%**, so the market is leaning towards a warm but not exceptional Istanbul Airport high on the NOAA feed.[1] Because settlement is tied to the highest **Temp** reading at Istanbul Airport on 22 July 2026, the trade here is less about city-wide weather headlines and more about whether the airport’s official midday-to-afternoon observation window prints one degree hotter than the market expects, with USDC escrowed on Polygon and outcome exposure represented through conditional tokens.[1]

For context, Istanbul’s July climate is usually centred around a typical daily high of about **29°C**, which makes a 31°C print plausible and a 32°C result a modest step above the norm rather than a true outlier.[2] That framing helps explain why the contract is not split evenly: the crowd is implicitly treating 31°C as the most likely band, with only a small tail assigned to the next degree up.[1][2]

The main catalyst is the NOAA timeseries itself, because this market cannot resolve until the first data point for the following date is published, which means the final outcome depends on the full day’s observed maxima rather than an early afternoon reading.[1] Traders watching the position should focus on whether the Istanbul Airport table updates cleanly in Celsius and whether the late-day observations push the day’s top value beyond 31°C; any weather-system shift that alters the airport’s peak hour matters more than broader regional averages.[1][2]

Sources: 1 · 2

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.