Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 34°C | 100% |
| 31°C or below | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C or higher | 0% |
Market context
Milan’s latest heat spell is the key backdrop for this market, because the reference is the Malpensa airport high on 2 August rather than the city-centre feel or the broader national picture. Current crowd pricing is clustered around the mid-30s Celsius, but the market is still unusually sceptical of the upper end: 0% is implied for a YES on the open-ended framing, which suggests traders are treating the exact settlement band as the main source of value rather than a simple “hot day” call.[1]
That caution fits the wider historical pattern for Milan in early August, where official-looking climatological guides usually point to high-20s or low-30s, but intense anticyclonic episodes can push readings well above normal. Recent comparable heat events have shown Milan is capable of extreme spikes, with one report noting the city’s hottest average day in 260 years and another placing the all-time high at 40°C on 30 July 2026.[5][7] On that basis, a forecast in the mid-30s is not an outlier, but it still sits above what many traders would expect from a typical August day.[6]
The immediate catalyst is the forecast sequence for the weekend and the strength of the African high-pressure ridge over northern Italy. Corriere reported a mostly sunny Sunday in Milan with a peak of 36°C and broader Lombardy heat up to 38°C, while Telepass described a renewed wave with local peaks of 39–40°C in the Po Valley.[2][15] For traders, the main dependency is whether Malpensa reaches the same level as the city forecasts or is held down by cloud, wind or boundary-layer mixing; any late-day revisions to airport observations will matter until the first datapoint for 3 August is published.[1]
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Milan on August 2? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
FAQ
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
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