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Chengdu July 11 High Temperature: Will 31°C Hold?

Chengdu July 11 High Temperature: Will 31°C Hold?

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SR Sofia Renard Climate & Science Analyst
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Lines Verdict
YES at 100% implied probability

FAVORS YES: Forecast data converged on 31°C and traders responded with a sharp 24-hour surge covering 90% of total volume. Market probability: 76%.

100% Market Probability
1h +5.6% 24h +76.7% Trend Moderate (53/100)
Volume
$126.4K
$115.2K in 24h
Liquidity
$126.1K
Deep liquidity
Time Left
6 hours
Resolves Jul 11
126K Vol. Jul 11, 2026
31°C $20K Vol.
100%
32°C $13K Vol.
0%
28°C or below $6K Vol.
0%
29°C $23K Vol.
0%
30°C $13K Vol.
0%
33°C $9K Vol.
0%

Chengdu’s afternoon heat has become the question of the day, and the market has moved decisively. The 31°C outcome now sits at 76.1% implied probability, and that number reflects a sharp 24-hour surge in conviction. Here’s what the measurements are telling us: real-time weather data pointing toward a specific temperature band has traders concentrating capital at this single outcome, pulling it well above any of the eleven alternatives on the board.

The market question asks for the highest temperature recorded in Chengdu on July 11, 2026. The YES outcome resolves at exactly 31°C. A YES share trades at $0.76, a NO share at $0.24. The market closes at 12:00 UTC on July 11, 2026. Total trading volume stands at $91,934, with $82,477 of that arriving in the last 24 hours alone.

How the 31°C Contract Works

This contract resolves YES if official measurement data confirms that 31°C was the peak temperature recorded in Chengdu on July 11, 2026. Resolution follows the market’s designated source, which will reference an authoritative weather measurement for the city. Any peak temperature other than exactly 31°C, whether 30°C, 32°C, or any other listed outcome, resolves this specific contract NO.

  • YES at $0.76 (76.1% implied probability): The official Chengdu high for July 11 is confirmed at exactly 31°C.
  • NO at $0.24 (23.9% implied probability): The official high lands at any temperature other than 31°C.

A NO outcome here doesn’t mean cold weather. It means the actual peak sits one degree higher at 32°C, one degree lower at 30°C, or anywhere else on the scale. Chengdu’s July climatology typically produces highs in the 30°C to 36°C range. Forecast uncertainty at the single-degree level is real. The 23.9% probability on NO reflects exactly that kind of measurement rounding risk.

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Momentum and Market Signals

The momentum composite here is unusually strong. A 24-hour price move of plus 24.5%, a trend score of 64.07, and flat one-hour movement together tell a clear story: a wave of capital entered this market on July 10 and July 11 as weather forecast models converged on a specific temperature range. The price has now stabilized near its ceiling, suggesting traders who acted on the signal have already positioned.

Total volume of $91,934 is modest by major market standards. The $82,477 arriving in the last 24 hours represents nearly 90% of all activity in this contract. Liquidity stands at $71,911. Volume below $1 million means this contract can reprice sharply if a single significant trade or a late forecast update lands before the 12:00 close. Thin markets amplify signal noise.

  • The 24-hour price surge of 24.5% connects directly to Chengdu weather forecast data converging on the 31°C band as of July 10 and July 11.
  • The one-hour change of 0.0% indicates the market has absorbed available information and is holding position ahead of resolution.
  • Liquidity at $71,911 is sufficient to support the current price but thin enough that a late forecast revision could move the contract meaningfully.
  • The trend score of 64.07 sits in moderately bullish territory, consistent with conviction building on fresh data rather than speculative momentum.
  • Trader sentiment breakdown shows 76.1% YES positioning, which mirrors the implied probability and signals broad directional agreement.

Lines Analysis: What the Chengdu Data Supports

The data doesn’t care about the politics, and this market has no politics. What it has is a convergence signal. Forecasters tracking Chengdu’s conditions on July 11 pointed to a peak in the low-to-mid 30s Celsius range, and the 31°C contract captured the majority of that forecast energy. The market is pricing uncertainty, not science, and right now the uncertainty is concentrated at the margins: will the actual measurement land at 31°C exactly, or tick one degree in either direction?

The NO side has a real case rooted in measurement precision. Chengdu’s peak temperature on any given July day can vary by a degree or two depending on cloud cover timing, afternoon convection, and observation methodology. A reading of 30°C or 32°C would each resolve this contract NO. Those adjacent outcomes each carry meaningful probability in their own right. The 23.9% NO probability is not noise. It reflects genuine meteorological uncertainty at single-degree resolution.

  • Watch for any official temperature readings from Chengdu Shuangliu International Airport or city-center weather stations published before market close.
  • Any forecast update showing a high of 32°C or above would pressure YES toward NO territory.
  • Afternoon convection patterns in Sichuan Basin can shift peak temperatures by one to two degrees within a few hours.
  • Market resolution methodology matters: confirm whether resolution uses hourly peak, daily maximum, or a specific observation window.
  • A thin liquidity environment means a single large trade before close could move price by several percentage points.

The $91,934 total volume tells us this is a focused, fast-moving market driven by short-duration weather data. The data favors YES at current pricing, but single-degree temperature markets carry inherent rounding risk that the 23.9% NO probability accurately captures.

LINES VERDICT

FAVORS YES — HIGH CONVICTION, SHORT FUSE

Chengdu’s July 11 forecast data converged sharply on the 31°C band, and the market responded with a 24-hour surge that brought 90% of all volume into this contract in a single day. The signal is clear and the conviction is real.

What the market says: At 76.1% implied probability, the market treats 31°C as the most likely outcome by a wide margin. With resolution at 12:00 on July 11, this contract has hours, not days, left to trade. Late forecast updates or observation surprises could reprice sharply in thin liquidity.

Key unknown: The single most important factor is the actual official temperature measurement published for Chengdu on July 11. If authoritative data confirms exactly 31°C, YES resolves. A reading of 30°C or 32°C flips the contract entirely.

Frequently Asked Questions

Traders collectively price a 76.1% chance the official Chengdu high on July 11 lands at exactly 31°C. That reflects current forecast data, not a guarantee. Markets can reprice quickly as new measurements emerge.

NO resolves if the official Chengdu peak temperature on July 11 is anything other than 31°C. That includes 30°C, 32°C, or any other listed outcome. Adjacent degrees are real possibilities at single-degree resolution.

Any official temperature reading from Chengdu weather stations or a forecast revision toward 30°C or 32°C would reprice this contract. Thin liquidity below $100,000 means even modest trades shift the price.

Resolution is set for July 11, 2026 at 12:00 UTC. The market has hours left to trade. Late-breaking observation data is the primary remaining catalyst.

Total volume is $91,934, with $82,477 arriving in 24 hours. That signals real conviction on fresh data, but thin overall volume means a single large trade can shift price meaningfully before close.

We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.

A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.

No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations.

What Could Shift These Probabilities?

Forecast Holds at 31°C

If afternoon observations from Chengdu's weather stations confirm a peak of exactly 31°C, this contract resolves YES and the 76.1% probability proves well-calibrated. Stable atmospheric conditions over Sichuan Basin through the afternoon would support this outcome. Traders who entered on July 10 at lower prices collect the full upside.

Temperature Ticks to 32°C

Chengdu's July afternoons can exceed forecast peaks by one degree when convective heating intensifies. A single degree higher, landing at 32°C, resolves this contract NO and erases the 76.1% YES position. Thin liquidity means the 32°C contract would surge dramatically on that outcome, while the 31°C contract collapses.

30°C Undershoot Scenario

Cloud cover or earlier-than-expected rainfall in Chengdu could suppress the daily maximum below 31°C. A reading of 30°C resolves this contract NO and validates the alternative outcome at lower probability. The Sichuan Basin's afternoon convection patterns make sub-31°C outcomes unlikely but not negligible.

Resolution Source Ambiguity

Different Chengdu observation points, the city center, Shuangliu Airport, and suburban stations, can produce readings that differ by one to two degrees. If the designated resolution source uses a different station than traders assumed, the official peak could land outside the 31°C range even if most thermometers in the city hit that mark.

Key macro factor: Chengdu sits in the Sichuan Basin, where summer heat is amplified by surrounding mountains and limited ventilation, making July highs consistently cluster in the 30°C to 36°C range under typical conditions.

Market Timeline

Jul 9, 4:03 AM
Market Created
Jul 9, 4:03 AM
Market Opened
12:00 PM
Market Resolution

Market Comments

Probabilities shown are market-implied and not predictions or recommendations. This content is for informational purposes only.