Highest temperature in Milan on July 15?

Platform comparison

Market context

Milan’s Malpensa International Airport is set to record its peak temperature for 15 July 2026, with the market currently pricing “YES” at 100% for the contract resolving within a specific range. On Polymarket, traders are locking in USDC on the Polygon network using conditional tokens, betting that the day’s high will fall into the frontrunner bracket of 32°C or below, which holds 50% of the implied probability, while 33°C sits at 33% [1].

Historically, mid-July highs at LIMC often cluster between 30°C and 34°C, making the 100% YES price appear detached from comparable years where temperatures exceeded 32°C. Current BBC Weather data shows 21°C at the airport for today, but this reflects evening conditions rather than the day’s peak, which typically occurs between 14:00 and 16:00 local time [2]. The divergence between historical variability and the current certainty suggests a potential mispricing if the settlement source captures a higher outlier.

Traders should monitor Wunderground’s real-time hourly feed for LIMC as the settlement window closes at 12:00 UTC on 15 July 2026, since the market resolves strictly on the highest recorded value for that station [1]. No external announcements or weather forecasts will alter the outcome; only the raw data from Wunderground’s daily history page determines resolution. Any delay in data publication or station calibration issues could introduce settlement risk, though the platform’s automated oracle is designed to fetch the figure directly.

Sources: 1 · 2

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

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

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.

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 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.

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.