Seoul July 7 Low Hit 22°C, Market Resolved Correctly | Lines.com

Seoul recorded a minimum temperature of 22°C on July 7, 2026, matching the outcome that drew the most market attention on Polymarket’s multi-bracket temperature market. The Korean Meteorological Administration measurement confirmed the overnight low before the market’s noon deadline, locking in the 22°C bracket as the resolution outcome.

The market did not open with 22°C as the favorite. The implied probability at open sat near 21%, meaning traders initially spread conviction across several adjacent brackets. That changed fast. Three separate price surges on July 6 pushed the 22°C bracket from 21 cents to a near-certain 100%, closing at 1.00. Total volume reached $58,480, with $47,315 of that trading in the final 24 hours. The data converged ahead of the measurement. The market followed.

Seoul’s July 7 Minimum Temperature Confirmed at 22°C

Seoul’s overnight low on July 7 held at 22°C, consistent with early-July climatology during the East Asian monsoon season. Persistent cloud cover and humidity suppress radiative cooling in Seoul during this window, which keeps minimum temperatures elevated compared to drier months. The 22°C reading sat in the middle of the historically observed range for this date, which runs roughly 19°C to 26°C based on KMA station records.

The 22°C bracket resolved at full confidence. The final probability at close reached 100%, up from an opening price of 21%. The entire move compressed into roughly 36 hours, with the largest single-day jump recorded on July 6 as forecast models and real-time station data aligned on the 22°C outcome.

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How the Market Performed on Seoul’s July 7 Low

At open, the 22°C bracket carried a 21% implied probability. That priced it as one of several plausible outcomes in a tight cluster between 21°C and 26°C. The market was not confidently wrong. It was genuinely uncertain across adjacent brackets, which is the correct posture for a temperature measurement with a roughly plus-or-minus two-degree standard deviation in observed July lows.

Volume tells the conviction story. The market drew $58,480 in total volume, with $47,315 arriving in the final 24 hours as weather forecast data narrowed the likely outcome. Liquidity reached $191,685, suggesting strong price discovery infrastructure. The final convergence to 100% reflected late-breaking meteorological data, not a structural market failure.

• Resolution Outcome: 22°C confirmed by KMA measurement on July 7, 2026.
• Article-Time Probability: 100% implied at resolution.
• Final Price at Close: 1.00 (100%).
• Total Volume: $58,480.
• Market Assessment: Underpriced YES at open; correctly resolved after late-session convergence driven by forecast data.

What the Seoul Temperature Resolution Means Going Forward

The 22°C outcome sits within the climatological norm for Seoul in early July. The East Asian monsoon suppresses overnight cooling, and Seoul’s urban heat island effect adds another one to two degrees above rural baselines. Markets tracking Seoul temperature brackets in future July windows should weight the 21°C to 24°C range as the most probable band, with the distribution skewing slightly warmer in recent years as mean temperatures trend upward.

The binary structure of this market actually worked against early price discovery. Spreading probability across eleven brackets meant each individual bucket opened with low implied probability even when the underlying distribution was relatively concentrated. A narrower bracket design covering only the highest-probability range would produce faster, more informative price signals. Here’s what the measurements are telling us: the market is pricing uncertainty, not science, and that spread reflects bracket design as much as genuine forecasting difficulty.

• Seoul’s KMA station data for July shows the 21°C to 24°C window captures the majority of observed overnight lows in the first ten days of the month, making the 22°C outcome structurally plausible from the start.
• The $47,315 in 24-hour volume indicates that real-time weather data, likely from numerical weather prediction model runs, drove the late-stage convergence rather than any single news event.
• Future Seoul temperature markets in the monsoon window will likely see similar late compression patterns as forecast confidence increases within 24 to 48 hours of measurement.
• The data doesn’t care about the politics: Seoul’s urban warming trend means markets anchored to historical averages from more than a decade ago may systematically underprice the warmer brackets over time.

LINES RESOLUTION VERDICT

RESOLVED YES: 22°C CONFIRMED

The 22°C bracket resolved correctly, driven by late-session convergence as forecast data aligned, though the market opened at only 21% implied probability across a wide multi-bracket field.

What the market showed: Opening implied probability was 21%; final price at close reached 100%. The market was not initially confident in 22°C, but late-breaking meteorological data drove a sharp correction. Total volume of $58,480 concentrated in the final 24 hours confirmed the convergence signal.

This analysis reflects the confirmed resolution of this market as of July 7, 2026. Prediction market probabilities reflect collective trader conviction, not guaranteed outcomes. Lines.com does not accept trades or provide financial or gambling advice.