Pronóstico: Highest temperature in Milan on July 21?

Platform comparison

Market context

On 21 July 2026, Milan's highest temperature will be recorded at Malpensa International Airport and sorted into one of several temperature bands. The market currently shows 0% probability across all ranges, reflecting either incomplete pricing or settlement uncertainty rather than meteorological consensus. Polymarket's conditional token structure on Polygon means traders are staking USDC against discrete outcomes; whichever temperature bracket resolves true will pay out to holders of that specific token, with all other positions expiring worthless.

Historical July temperatures at Malpensa show the airport regularly records highs between 28–32°C, with occasional peaks above 33°C during heat waves. The 2003 European heat wave saw Milan reach 35°C; more recently, July 2022 brought sustained temperatures above 32°C across northern Italy. These precedents suggest the most probable outcomes cluster in the 28–34°C range, yet the market's flat probability distribution indicates either insufficient liquidity to establish consensus pricing or genuine uncertainty about which specific band will settle. Traders should examine whether the current odds reflect rational indifference or mispricing relative to seasonal climatology.

European weather forecasting agencies including ECMWF and Météo-France will issue increasingly precise ten-day outlooks as July 2026 approaches, with particular attention to high-pressure systems over the Mediterranean. The UK Met Office's seasonal outlook and any announced heat advisories from Italy's Protezione Civile will serve as key catalysts for repricing. Wunderground's historical data feed, which feeds the settlement mechanism, has proven reliable for Italian airport stations, though traders should verify the specific station code (LIMC) matches Malpensa's official weather reporting location before committing capital.

Methodology

We track Pronóstico: Highest temperature in Milan on July 21? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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'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.

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.