Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 31°C | 100% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
Milan’s late-July heat profile is firmly summer-like, with typical daytime highs around **29°C** and average lows near **19°C**, so the contract is pricing a single day’s extreme against a climatology that already sits well into the warm season.[1] The key settlement point is the **highest** temperature recorded at Malpensa airport, not the city-centre reading, which matters because airport stations can run slightly differently from urban conditions and because the market resolves off one day’s maximum rather than an average.[1]
Against that backdrop, the current **0% YES** crowd price looks extreme rather than informative: in weather contracts, ultra-low implied probabilities often reflect thin trading, stale assumptions, or a belief that the referenced station will miss the target range by a wide margin. On a cross-platform basis, there is no meaningful sportsbook line to compare here, so the cleanest benchmark is analyst-style climatology, and that points to a materially higher-than-zero chance of a warm July day even if the exact bucket is highly range-sensitive.[1] Comparable Milan July guides consistently describe the month as hot and busy, which supports the broader expectation of elevated temperatures rather than a cool anomaly.[2]
The main catalysts are operational rather than news-driven: the day’s synoptic setup, whether a hot continental air mass or thunderstorms cap the afternoon maximum, and any airport-observation quirks at LIMC before the **12:00 UTC** settlement window closes. Because the contract keys off the official Wunderground history page for Malpensa, traders should watch that station’s hourly progression and any late-morning cloud, rain, or wind shifts that could keep the maximum below the relevant range; no recent policy or event announcement changes the underlying dependency chain.[1]
Methodology
We track Highest temperature in Milan on July 26? 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
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.
- 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.
- 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 Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Milan on July 26? on Best Prediction Markets
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