Highest temperature in Seoul on June 16?

Platform comparison

Active sub-markets

Market context

Seoul's highest temperature on 16 June 2026 will be measured at Incheon International Airport Station and reported in Celsius. The settlement relies on historical weather data from Wunderground, a widely-used source across prediction markets, though traders should verify the specific station identifier (RKSI) matches their own reference materials before committing capital.

June temperatures in Seoul typically range between 23–28°C, with occasional peaks above 30°C during early summer heat waves. Historical records show that mid-June highs exceed 28°C in roughly 40% of years, whilst readings above 32°C remain uncommon at this time of year. The 0% crowd probability currently assigned suggests either extreme confidence in a cooler outcome or insufficient liquidity to establish a meaningful price. Kalshi's binary structure and Polymarket's broader range offerings would handle this market differently: Kalshi typically settles on yes/no thresholds with tighter spreads, whilst Polymarket's decimal odds format allows finer granularity across temperature bands. Betfair and Smarkets, with their commission-based fee models, may show different effective odds than Kalshi's flat-fee approach, particularly if traders hedge across platforms.

Traders should monitor Korea Meteorological Administration forecasts released in early June, which provide 10–15 day outlooks. El Niño or La Niña conditions, if active, influence regional temperature patterns; the current phase should be confirmed via NOAA updates. Typhoon activity in the Western Pacific during early June could suppress temperatures, whilst high-pressure systems typically drive peaks. Settlement closes at 12:00 UTC on 16 June, requiring traders to account for timezone conversion between Seoul local time and the market's UTC reference.

Methodology

We read Highest temperature in Seoul on June 16? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Is this market available outside the US?

Kalshi Alternative UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 it cost to trade on Kalshi Alternative UK?

Zero. Kalshi Alternative UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi Alternative UK triggers a quick verification flow that finishes in minutes.