Highest temperature in Milan on August 2?

Platform comparison

Market context

Polymarket prices this contract with **34°C** as the leading outcome at about **33%**, while the market assigns **0% YES** to the broader idea that Milan will print a different bracket than the one traders currently favour. The shares are standard Polymarket conditional tokens settled in **USDC** on **Polygon**, so the key question is not whether Milan is hot in general, but whether the highest reading at **Malpensa Intl Airport Station** lands inside one specific Celsius range before the settlement window closes.

The present pricing is consistent with Milan’s late-summer profile rather than an outlier scenario. Long-run August guides put Milan’s typical daytime highs around **28–31°C**, but the current setup reflects a hotter-than-average spell, with some forecasts for 2 August pointing towards daytime maxima near **36°C** and limited cloud cover. That leaves the upper brackets alive, but still with enough spread in the exact peak to keep the market fragmented across adjacent temperature bands rather than concentrated in a single one.

For traders, the main catalysts are the final local forecast updates, any change in heat advisories, and the day’s actual airport observations as boundary-layer mixing and urban heat-island effects work through the afternoon. Reuters reported that several Italian cities, including Milan, were already under red alert for heat, which supports the idea that elevated maxima were not a surprise going into the session. On Polymarket, that means the live price is mainly a read-through on whether the station’s high clips the hotter bracket or settles one step lower once the Wunderground history page locks in.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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