Highest temperature in Seoul on June 7?

Platform comparison

Active sub-markets

Market context

Seoul's weather on 7 June 2026 will be measured by the highest temperature recorded at Incheon International Airport Station, with settlement determined by Wunderground's historical data archive. Early June in Seoul typically sits in the 23–28°C range, though heat waves can push readings into the low 30s. The 0% crowd probability suggests traders are either absent from this market or treating the outcome as highly uncertain across multiple temperature bands.

Historical June temperature patterns in Seoul show considerable year-to-year variance. The past decade's early-June highs have ranged from 21°C to 31°C, with 2018 and 2022 recording notably warmer readings. Comparable weather markets on Polymarket and Kalshi have shown that temperature-band markets often attract sparse liquidity when settlement depends on a single weather station rather than broader regional averages. Betfair's weather offerings typically feature tighter decimal odds formats, whilst Smarkets' fractional presentation can obscure the implied probabilities on narrow temperature ranges—a structural difference that affects how traders price tail outcomes.

Traders monitoring this market should track the Korean Meteorological Administration's seasonal forecasts and any La Niña or El Niño signals that influence East Asian weather patterns. Late May and early June 2026 will be critical for assessing whether atmospheric conditions favour above-normal or below-normal temperatures. The settlement window closes at 12:00 UTC on 7 June, leaving no room for intraday temperature swings after that point. Wunderground's historical data for Incheon has proven reliable in previous weather markets, though traders should verify the station's operational status ahead of the settlement date.

Methodology

We read Highest temperature in Seoul on June 7? 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). Kalshi Alternative UK 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 Kalshi Alternative UK, 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?

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 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.

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.

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.