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Highest temperature in Milan on July 31?

"Highest temperature in Milan on July 31?" on Polymarket, Kalshi and Polymarket Legal UK — what traders need to know about platform choice, KYC and tax law.

35°C 89% 36°C 9% 34°C or below 0% 37°C 0% Volume: $97K Liquidity: $68K Closes: 31 Jul 2026
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Highest temperature in Milan on July 31?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Legal UK) Pick
polygram.ink (preferred broker)
89% 11% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
89% 11% 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.

OutcomeProbability
35°C89%
36°C9%
34°C or below0%
37°C0%
38°C0%
39°C0%
40°C0%
41°C0%
42°C0%
43°C0%
44°C or higher0%

Market context

The event is the highest temperature recorded at Malpensa Airport on 31 July, using the Wunderground history page as the settlement source, so the practical question is whether the day’s top reading lands in the low-to-mid 30s Celsius or pushes materially higher. July in Milan is normally hot, with typical daytime highs around 31°C and occasional spikes into the high 30s, which makes a 0% implied probability on the top end look consistent with a market that is pricing in an ordinary summer day rather than an extreme heat event.[1][6][9][10]

For framing, comparable Milan July weather data show that 35°C-plus days are possible but not routine, and the city’s historical July records include far hotter outliers than the climatological average, so traders usually focus on synoptic heat domes, foehn-type warming, and the timing of afternoon convection rather than monthly averages alone.[6][10][16] A zero-priced tail outcome does not mean impossibility; it usually means the market sees the upper bins as remote relative to the observed seasonal distribution and the airport-specific microclimate.

On accessibility, German GlüStV rules can matter for German users because regulated or semi-regulated gambling-style products may face restrictions or platform gating, while US CFTC reach is relevant where a market could be characterised as a commodity-derivative event contract and offered into the United States. The “no-KYC up to $1,500” label generally means a user may be able to deposit, trade, or withdraw within that cumulative threshold without full identity verification, but it does not remove geo-blocking, sanctions screening, or product-level access limits, so availability for this specific market still depends on the platform’s jurisdictional controls rather than the headline threshold alone.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Milan on July 31? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

How are winnings taxed?
Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
Can I trade anonymously?
Pseudonymously, yes — up to the KYC threshold. Polymarket Legal UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
What happens during a tax audit?
You're responsible for documenting your trades. Polymarket Legal UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
Are prediction markets gambling?
Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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