Highest temperature in Busan on August 1?

Platform comparison

Market context

Busan’s hottest reading on 1 August will be the day’s maximum at Gimhae Intl Airport Station, and the market resolves from the Wunderground daily history page rather than a general city forecast. With settlement only possible once the station’s full-day observation window has closed, the near-term driver is whether late-afternoon heat and humidity push the maximum into the upper end of the usual August range.

Climatically, Busan is not a low-volatility venue in early August: long-run August averages cluster around the mid-30s °C, with typical highs near 30–31°C and muggy, rain-prone conditions. Recent references place August daily highs around 82–88°F and note that Busan can exceed 90°F on hotter days, while a recent regional heatwave saw Busan reach 38.8°C, its highest reading in over a century[1][4][5][14][17]. That makes a 0% crowd-implied probability on the lowest temperature band look like an assertion that the day will stay unusually cool rather than merely seasonally warm.

For traders, the main catalysts are the local synoptic pattern, cloud cover, rainfall timing, and any heat advisories affecting the Korean south coast, because those determine whether the station’s peak arrives early and then fades or continues to climb into the afternoon. In crypto terms, this is a USDC-settled binary on a weather print, so it is less about market-wide BTC or ETH direction than about whether flows and funding elsewhere distract from a niche contract that can reprice sharply if the observed maximum lands near a band edge.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads Highest temperature in Busan on August 1? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

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Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

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How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

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