Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
46% | 54% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
46% | 54% | 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 | 46% |
| 30°C | 33% |
| 29°C | 9% |
| 32°C | 9% |
| 33°C | 1% |
| 24°C or below | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 34°C or higher | 0% |
Market context
Milan's weather on 21 July 2026 will be determined by atmospheric conditions across the Po Valley and broader Mediterranean circulation patterns active that week. The settlement hinges on the single highest temperature reading at Malpensa International Airport's official weather station during the calendar day, measured in Celsius and resolved via Wunderground's historical records.
July represents Milan's warmest month climatologically, with average daily highs around 28°C and extremes regularly exceeding 32°C. The city's record high of 37.0°C was set in August 2003 during Europe's severe heatwave; July records typically reach 36–37°C in exceptional years. Malpensa's airport location in the northern suburbs, away from urban heat island effects, generally records temperatures 1–2°C cooler than central Milan. Historical July data from the station shows most daily maxima fall between 25–32°C, with readings above 34°C occurring roughly once per decade on specific dates.
Traders should monitor European weather forecasting updates from mid-July 2026 onwards, particularly from ECMWF and national meteorological services, which will clarify whether high-pressure systems or Atlantic disturbances dominate that week. Heatwave alerts issued by Italian authorities (Protezione Civile) in the days preceding 21 July would signal elevated temperature potential. Seasonal patterns suggest early-to-mid July typically experiences warmer conditions than late July, though individual years vary considerably based on jet stream positioning and Mediterranean sea-surface temperatures.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, which mirrors the Polymarket order book directly.
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 Prediction Today. 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'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 Prediction Today 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 21? on Prediction Today
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