Pronóstico: Highest temperature in Milan on August 10?

Platform comparison

Market context

Polymarket prices this contract at **0% YES** today, so the market is treating a qualifying heat outcome at Milan Malpensa on 10 August 2026 as currently not in play. Because settlement depends on the **highest reading in Weather Underground’s Daily Observations** table, the live on-chain position on Polygon is really a bet on a specific airport observation, not on the broader city forecast or the headline day-high shown elsewhere.

The historical framing is straightforward: Milan’s August climate is warm enough that high-20s Celsius are normal, with several sources putting typical August highs around **28–30°C** and some days reaching the low **30s°C**.[1][3][11][19] Weather Underground’s own Milan history page shows recent daily highs in the **mid-30s°C** and an actual high of **95°F** in its historical table, which underlines that the upper temperature bands can be reached when hot air masses settle over northern Italy.[2][18] For a market with a range-based outcome, that means the difference between adjacent brackets can matter more than the broader “hot summer day” narrative.

A trader watching this on USDC-settled, conditional-token mechanics should focus on the airport-specific setup: sky cover, wind direction, and any afternoon convection over Lombardy, rather than Milan city-centre conditions. Forecast providers currently point to a very warm, dry day around **100°F/38°C** for Milan, which would be consistent with a high-end outcome if the airport observation tracks broadly with the city forecast.[16][4] The practical dependency is simple: if Malpensa stays under a shallow, stable warm layer through the afternoon, the Daily Observations table can peak below the top bracket even when the wider area feels oppressive; if not, the market can still resolve into the higher Celsius range despite the low implied probability.[16][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Highest temperature in Milan on August 10? 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

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.

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 Polymarket Qué Es 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.