Highest temperature in Istanbul on July 22?

Platform comparison

Market context

Istanbul Airport’s highest temperature on 22 July is being priced at 0% for the YES side, so the contract is effectively saying the market expects the NOAA reading to land in a lower band. With USDC collateral on Polygon and conditional tokens set to resolve off the NOAA time-series table, the key object here is the day’s peak value under the Temp column, not the afternoon forecast headline. If the first data point for 23 July has not yet appeared, final settlement can wait, which keeps the market pinned to published observations rather than intraday assumptions.

That 0% print is best read alongside how July heat usually behaves at Istanbul Airport: peaks are often decided by a short-lived afternoon maximum rather than an all-day trend, and the boundary between adjacent temperature bands can matter more than the absolute forecast. In practice, these contracts often stay flat until the day’s last few NOAA updates confirm whether the top reading clears the next bracket. Similar weather markets commonly reprice only when observed airport data start matching or missing the upper band late in the session, rather than when model forecasts move early in the day.

For traders, the immediate catalysts are the NOAA publication cycle, any late-morning or early-afternoon spike in the airport observations, and the timing of the next day’s first entry, which can unlock settlement. The contract is tied to Istanbul Airport specifically, so city-centre temperatures, social media weather chatter, and broad regional forecasts matter only if they translate into the official LTFM series. The settlement window ending at 12:00 UTC makes the final published readings before that cut-off the decisive inputs.

Methodology

This page reviews Highest temperature in Istanbul on July 22? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Scam?, which mirrors the Polymarket order book at 0% fees.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 Scam? 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.