Busan June 1 Peak Temperature: 29°C in the Lead

A single-day temperature market for Busan has seen dramatic repricing in the last 24 hours. The 29°C outcome surged 15.5% overnight to sit at 45.5% implied probability, making it the clear frontrunner in a crowded field of eleven possible outcomes. Tomorrow’s resolution at noon local time leaves almost no room for further data adjustments.

The market question asks: what will the highest temperature in Busan reach on June 1, 2026? The 29°C outcome trades at 0.46 YES and 0.55 NO, with total volume at $15,523 and $13,743 of that arriving in the last 24 hours alone. The market resolves at 12:00 UTC+9 on June 1.

How the 29°C Contract Works

This contract pays YES if Busan’s official maximum temperature on June 1 lands exactly at 29°C. Resolution draws from official meteorological observation. Every competing outcome, from 22°C or below up to 32°C or higher, is a separate contract trading simultaneously.

• YES at 0.46 implies a 45.5% chance Busan hits exactly 29°C as its daily maximum.
• NO at 0.55 implies a 54.5% chance the high lands at any other value on the eleven-outcome board.

The NO side wins if Busan records any temperature other than 29°C as its peak reading. Given that competing outcomes include 28°C and 30°C as close neighbors, the probability mass is spread thinly. A forecast shift of even one degree in either direction immediately transfers value away from this contract.

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Momentum and Market Signals

The combined momentum signal is sharply bullish on a 24-hour basis and flat in the last hour, with a trend score of 50.97. The 15.5% overnight surge most likely tracks updated numerical weather prediction model output, which typically refreshes in the 18:00 to 00:00 UTC window. The one-hour flatline since then suggests traders are waiting for the next model run rather than adding fresh conviction.

Total volume of $15,523 is modest by Polymarket standards, and $13,743 arrived in the last 24 hours. That concentration means yesterday’s session built almost the entire book. Liquidity sits at $17,963, which is healthy relative to volume, but a thin total market means a single large trade or a weather model update can move the price sharply before resolution.

• The 24-hour price surge of 15.5% from a low of 0.28 (30-day floor) to 0.46 reflects a clear directional shift driven by updated forecast data.
• The one-hour change of 0.0% signals that traders have paused, waiting for the next model cycle before adding positions.
• Liquidity at $17,963 exceeds total volume, which means the order book can absorb new information without extreme slippage.
• Volume below $1M means a coordinated position of even a few hundred dollars can move the price by several percentage points.
• The trend score of 50.97 sits at neutral-to-bullish, consistent with a market that has made its directional call but lacks the volume to push further without fresh data.

Lines Analysis: Busan June 1 Temperature

The 29°C outcome holds the dominant probability position because Busan’s late-May and early-June climatology centers on the high 20s. Korea Meteorological Administration forecast data for the Busan region on June 1 has been pointing toward a 28°C to 30°C range, with 29°C sitting at the modal forecast. That alignment between climatological norms and current model output explains the overnight repricing.

The competing outcomes present real risk. The 28°C and 30°C contracts are the primary threats. If a sea breeze strengthens off the Korea Strait during the afternoon, the peak reading stays at 28°C. If inland heating dominates and the onshore flow weakens, 30°C becomes the resolution value. Busan’s coastal exposure makes one-degree swings between competing outcomes routine on early June days with variable wind regimes.

• Korea Meteorological Administration’s next forecast update, expected before June 1 morning, is the single most important price signal before resolution.
• An overnight model shift toward 30°C would drain probability from this contract and push it toward the 30°C outcome.
• A shift toward 28°C driven by stronger marine influence would have the same draining effect in the opposite direction.
• Any official temperature advisory or heat-related announcement from Korean weather services would confirm or contradict the current modal forecast.
• The final observation itself, recorded at the Busan weather station, resolves all competing contracts simultaneously at noon local time.

With $15,523 in total volume, this market reflects trader consensus rather than deep institutional positioning. The data currently favors the 29°C outcome, but the spread between competing nearby outcomes is narrow enough that the market is genuinely pricing uncertainty across a three-degree band.

Narrow Leader, Live Contest

The 29°C outcome holds the strongest single-contract probability, but the surrounding outcomes at 28°C and 30°C collectively represent a real majority. The market has made a directional call on the modal forecast, not a settled conclusion.

What the market says: A 45.5% implied probability means the market sees 29°C as the most likely single outcome but assigns more than half the probability to everything else combined. Volatility is high given the thin total volume and the imminent resolution tomorrow at noon local time.

Key unknown: The Korea Meteorological Administration forecast update issued on the morning of June 1 is the single data point that would reprice every contract on this board before resolution.