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Highest temperature in Taipei on July 31?

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

37°C 100% 28°C or below 0% 29°C 0% 30°C 0% Volume: $82K Liquidity: $209K Closes: 31 Jul 2026
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Highest temperature in Taipei on July 31?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Is Kalshi Legal in California) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Go to the live market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Go to the live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Go to the live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Go to the live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
37°C100%
28°C or below0%
29°C0%
30°C0%
31°C0%
32°C0%
33°C0%
34°C0%
35°C0%
36°C0%
38°C or higher0%

Market context

The relevant event is the highest temperature recorded at Taipei Songshan Airport Station during the 31 July observation window, with settlement tied to the Wunderground daily history page for that station. At 11:00 UTC on the day, Taipei was already under an orange heat advisory after daytime temperatures topped 36°C for a third straight day, which makes a high in the mid-to-upper 30s Celsius the live reference point rather than an outlier scenario.[1]

A 0% crowd-implied chance on a “YES” outcome looks consistent with the way this market is framed, because the title is open-ended while settlement depends on which range is ultimately used for the day’s maximum rather than on a simple threshold event. July is Taipei’s hottest month on average, with typical highs around 33°C and historical July extremes reaching roughly 38°C or even above that in some summaries, so comparable cases show that single-day spikes into the mid-30s are ordinary while anything much higher requires a pronounced heat surge.[4][10][11][16][19]

For accessibility, the main frictions are regulatory rather than meteorological: German markets can fall within the scope of the GlüStV regime, which affects whether a user can participate from Germany, while US CFTC reach matters if a venue serves US persons or offers event contracts into that market. “No-KYC up to $1,500” usually means a user can access the market and withdraw or trade within a capped lifetime or rolling amount without full identity verification, but higher activity or jurisdictional checks can still trigger KYC, so the practical question is whether the platform allows weather contracts for the user’s location and limit band.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Taipei 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

Is Polymarket legal in my country?
Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legal in California has a different geo footprint.
Do I need to KYC for Is Kalshi Legal in California?
Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
Can I trade anonymously?
Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legal in California 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.
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.
Is there a withdrawal cap?
No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
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