Highest temperature in Seoul on June 14?

Platform comparison

Active sub-markets

Market context

On 14 June 2026, the highest temperature recorded at Incheon International Airport Station will determine which range resolves YES. Seoul's June climate typically peaks between 26–30°C, though heat waves can push readings above 32°C. The settlement uses Wunderground's historical data feed, a standard source across most Western prediction platforms, though Kalshi and Betfair occasionally flag regional weather stations differently depending on their data vendor contracts. The 0% implied probability suggests traders are either awaiting range options to be published or treating this as a placeholder market pending full category launch.

Historical June temperatures in Seoul show considerable variance year-on-year. The past decade has recorded highs ranging from 24°C in cooler years to 35°C during anomalous heat events, with the median clustering around 28–29°C. This spread explains why early-stage weather markets often show flat probability distributions until traders calibrate against seasonal norms and longer-range forecasts. Polymarket's decimal odds format and Kalshi's binary structure handle temperature ranges differently—Polymarket typically offers multiple overlapping ranges, whilst Kalshi's yes/no framework requires discrete threshold selection, affecting how traders hedge across platforms.

Traders should monitor South Korea's meteorological agency (KMA) seasonal outlooks released in May, which inform June precipitation and temperature expectations. El Niño or La Niña phases influence East Asian summer onset timing. The market's settlement window closes at 12:00 UTC on 14 June, giving traders access to morning forecasts but not afternoon revisions—a constraint worth noting when comparing execution windows across Smarkets, Betfair, and Polymarket, which sometimes stagger cutoff times by region.

Methodology

We read Highest temperature in Seoul on June 14? 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

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). Polymarket Alternative routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Alternative 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 does it cost to trade on Polymarket Alternative?

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

Do I need to KYC for this market?

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

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.