Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
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.
| Outcome | Probability |
|---|---|
| 35°C | 100% |
| 33°C or below | 0% |
| 34°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C | 0% |
| 42°C | 0% |
| 43°C or higher | 0% |
Market context
On 28 July 2026, the highest temperature recorded at Gimhae International Airport Station in Busan will fall into one of several defined ranges. The settlement will draw from Weather Underground's historical data for that specific date and location, with resolution occurring after the calendar day closes. Busan's summer climate typically produces daily highs between 28 and 32 degrees Celsius during late July, though heat waves can push readings several degrees higher. The 0% crowd probability suggests either extreme confidence in a particular outcome or insufficient liquidity to establish meaningful odds across the available temperature bands.
Busan's July temperatures have historically ranged from 26 to 35 degrees Celsius over recent decades, with extreme heat events becoming more frequent. The 2018 Korean heat wave saw Busan reach 34.6 degrees on 24 July; the summer of 2022 brought sustained temperatures above 32 degrees throughout late July. These precedents establish that readings above 30 degrees are commonplace and readings above 33 degrees are plausible but less frequent. Current crowd positioning at 0% suggests traders may be anchored to a specific temperature band rather than reflecting genuine scarcity of outcomes.
Traders should monitor the Korea Meteorological Administration's seasonal forecasts released in June 2026 and any heat wave warnings issued in early July. Pacific typhoon activity and the strength of the North Pacific high-pressure system in late July will determine whether Busan experiences typical summer conditions or anomalous heat. Real-time weather data from Gimhae Airport becomes the decisive factor in the final week before settlement; the airport's coastal location moderates extremes compared to inland Korean cities.
Methodology
This overview of Highest temperature in Busan on July 28? 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.
- 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. 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).
Trade Highest temperature in Busan on July 28? on Is Kalshi Legal in California
Live order book, 0% fees, USDC settlement in seconds.
Open live market →