Chengdu May 28 High: Market Locks In 29°C or Above

The market resolved this before the thermometers did. The contract asking whether Chengdu’s highest temperature on May 28 would reach 29°C or above is trading at 99.8% implied probability, effectively a settled outcome. A 74.3% price surge over 24 hours tells the story: traders watched the forecast sharpen and moved decisively.

The market question asks whether Chengdu’s single-day temperature peak on May 28 hits 29°C or higher. The YES contract trades at 1.00. The NO contract trades at 0.00. The market closes at 12:00 UTC on May 28, 2026. Total volume stands at $49,618, with $44,729 of that arriving in the last 24 hours.

How the Chengdu 29°C Threshold Contract Works

YES pays out if Chengdu’s officially recorded high temperature on May 28 reaches 29°C or higher. NO pays out if the daily high falls at or below 28°C. Resolution follows the market’s designated weather data source for Chengdu on the contract date.

• YES (29°C or higher): trading at 1.00, implying 99.8% probability.
• NO (28°C or below): trading at 0.00, implying 0.2% probability.

The NO side requires Chengdu’s temperature to stall below the 29°C line. Late May in Chengdu sits firmly in the pre-monsoon warming window. The Sichuan Basin traps heat. A cold front arriving on short notice is the only credible path to a sub-29°C reading, and the forecast window is nearly closed.

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Momentum and Market Signals

The momentum composite here is unusually clean. A 30.8% move in the last hour, a 74.3% move over 24 hours, and a trend score of 87.94 all point to a single driver: weather forecasts for Chengdu on May 28 converged on temperatures well above the 29°C threshold, and traders priced that convergence fast.

Total volume sits at $49,618. The 24-hour volume of $44,729 means nearly all activity in this market arrived as the forecast signal strengthened. Liquidity reads at $176,518, which is substantial relative to total volume. This means the price anchor is firm. At volume below $1M, this market can move sharply on a single data update, but at 99.8% there is almost no room left to move upward.

• The 1-hour and 24-hour price changes both reflect forecast data arriving, not new scientific measurements. The signal is meteorological, not model-driven.
• Trader sentiment sits at 99.8% YES and 0.2% NO. That 0.2% NO represents the market’s residual uncertainty, essentially a data-error hedge.
• Liquidity at $176,518 far exceeds total volume, suggesting market makers have capacity that traders largely left unused.
• The 30.8% single-hour move on May 28 itself indicates same-day forecast confirmation, not just pre-event positioning.
• Open interest at $0 suggests positions have largely been closed or the structure of this market does not carry open interest forward.

Lines Analysis: Chengdu Temperature Forecast

Chengdu in late May routinely records daily highs in the 29°C to 34°C range. The Sichuan Basin’s geography concentrates warm air. Meteorological data for May 28 appears to have aligned well above the 29°C threshold, which is why the market moved so aggressively. The data doesn’t care about the politics, and here the data landed clearly on one side.

The only credible path to a sub-29°C outcome runs through an unexpected cold front, a measurement anomaly, or a data-source discrepancy at resolution. None of those scenarios has a meaningful forecast signal attached. A weather station outage or an official data delay could theoretically affect resolution, but the 0.2% NO price reflects exactly that kind of tail risk, not a genuine meteorological argument.

• Any late forecast revision showing a cold air intrusion into the Sichuan Basin before midday May 28 would reprice this contract downward.
• Official temperature data publication from the designated resolution source remains the final arbiter. Timing of that release matters.
• A data source discrepancy between stations in Chengdu could introduce resolution uncertainty, though this is historically rare.
• Related markets suggest 2026 is running hot globally. That macro context supports warm readings across inland Chinese cities in late May.

Total volume at $49,618 is modest. The $44,729 arriving in 24 hours shows conviction built fast. Here’s what the measurements are telling us: the forecast confirmed temperatures above threshold, traders followed the signal, and the market is now pricing certainty rather than uncertainty.

LINES VERDICT

EFFECTIVELY RESOLVED ABOVE THRESHOLD

Chengdu’s May 28 high almost certainly crossed 29°C. The forecast signal was unambiguous, the market responded with a 74% single-day move, and the 99.8% price leaves no analytical argument on the other side.

What the market says: At 99.8% implied probability, the market has concluded this outcome is settled. The only residual volatility before the May 28, 2026 close is measurement confirmation risk, not forecast uncertainty.

Key unknown: The single event that could reprice this contract is an unexpected data source discrepancy or official temperature reading below 29°C from the designated resolution provider, which would conflict with every available forecast signal.

Scientific Context: Late May Temperatures in Chengdu

Chengdu’s climate in late May sits in a transitional zone between spring warming and early-summer monsoon onset. The Sichuan Basin acts as a heat trap, with surrounding mountains limiting cold air intrusions. Historical daily highs for late May in Chengdu regularly exceed 29°C, and readings above 30°C are common. The 29°C threshold in this contract is not an aggressive line. It is well within the typical range for this date and location. The market is pricing uncertainty around measurement confirmation, not around the underlying meteorology.

What would move this price before the May 28 close: A published official temperature reading below 29°C from the designated data source would be the only event capable of shifting this market. No other signal has meaningful probability of arriving before resolution.

Highest temperature in Chengdu on May 28?

This contract asks whether Chengdu’s official daily high on May 28, 2026 reaches 29°C or above. At 99.8%, the market treats the answer as confirmed.

What does the 0.2% NO price represent?

The 0.2% NO price is a residual hedge against data anomalies, measurement errors, or resolution source discrepancies. It does not represent a meteorological forecast for sub-29°C temperatures.

What data event would move this contract?

Only the official temperature publication from the designated resolution source matters now. Any reading below 29°C would instantly reprice the market.

When does this market resolve?

The contract closes at 12:00 UTC on May 28, 2026. Resolution follows the official temperature record for that date.

Is this market reliable given the volume?

Total volume sits at $49,618, which is below $1M. Thin volume means the price could technically move on a single large trade, but at 99.8% there is almost no upward room remaining.