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Qingdao July 3 High Temp: Can 31°C Hit at 24.5%?

Qingdao July 3 High Temp: Can 31°C Hit at 24.5%?

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

LEAN NO: The eleven-bracket structure caps the 31°C outcome's ceiling regardless of climatological plausibility. Market probability: 24.5%.

100% Market Probability
1h +0.0% 24h +75.1% Trend Moderate (65/100)
Volume
$48.2K
$43.5K in 24h
Liquidity
$186.1K
Deep liquidity
Time Left
7 hours
Resolves Jul 3
48K Vol. Jul 3, 2026

Qingdao sits on the southern tip of the Shandong Peninsula, where the Yellow Sea keeps summer highs stubbornly lower than inland China. That coastal buffer is exactly why the 31°C outcome trades at 24.5% probability while the broader market leans toward cooler readings on July 3. Here’s what the measurements are telling us: the market is pricing a tight band between 30°C and 32°C, with traders betting the most likely outcome lands just below the 31°C threshold.

The market question asks for the highest temperature recorded in Qingdao on July 3, 2026. The 31°C outcome trades at 0.25 YES and 0.76 NO. Resolution closes at 12:00 UTC on July 3. Total volume across the contract sits at $4,034, with $3,388 of that moving in the past 24 hours. The data doesn’t care about the politics, and right now the data points to a lean against 31°C hitting exactly.

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How the Qingdao July Third Temperature Contract Works

This contract resolves YES if the highest recorded temperature in Qingdao on July 3, 2026 equals exactly 31°C. A reading of 30°C or below resolves NO. A reading of 32°C or higher also resolves NO for this specific outcome. Separate outcomes exist for 30°C, 32°C, 33°C, 34°C, 35°C or higher, and cooler brackets down to 25°C or below. The full bracket structure means traders are distributing probability across eleven possible outcomes simultaneously.

  • YES (31°C hits exactly): 0.25 per share, 24.5% implied probability. Pays out if official temperature observations confirm a 31°C daily maximum on July 3.
  • NO (31°C does not hit exactly): 0.76 per share, 75.5% implied probability. Pays out across any other temperature bracket winning.

The NO side wins when Qingdao’s July 3 maximum settles anywhere outside the 31°C mark. Early July in Qingdao typically sees highs ranging from 27°C to 33°C, with sea breeze suppression keeping extreme outliers rare. The competing 30°C and 32°C outcomes absorb significant probability mass, fragmenting what any single bracket can capture. The 31°C bracket faces competition from adjacent outcomes on both sides.

Momentum and Market Signals Heading Into July Third

The momentum composite on this contract points to mild bearish pressure. The 24-hour price change registers at -4.0%, the 1-hour change holds flat at 0.0%, and the trend score reads 38.58 out of 100. Combined, this signal suggests the initial 24-hour trading session drove a small repricing downward, then stabilized. The most likely driver is updated numerical weather prediction models for the July 3 window, which NWP guidance typically sharpens as the forecast horizon shortens to 24 to 48 hours.

Total volume of $4,034 is thin. The system prompt requires flagging this directly: at this volume level, a single meaningful bet can move the price sharply. Liquidity stands at $26,464, which is notably deep relative to volume, meaning the order book can absorb moderate trades without extreme slippage. But $3,388 of the total $4,034 volume arrived in the past 24 hours, suggesting the market activated only recently as the resolution date closes in.

Key Factors

  • The 24-hour momentum composite (flat 1-hour, -4.0% day, trend score 38.58) signals mild downward conviction, likely driven by incoming NWP model updates narrowing the July 3 forecast range.
  • Qingdao’s coastal position on the Yellow Sea historically suppresses peak summer temperatures relative to inland Shandong cities, keeping the 31°C-to-33°C range most probable in early July.
  • The eleven-outcome bracket structure means no single temperature resolution commands majority probability. The 31°C bracket competes directly with 30°C and 32°C for adjacent trader allocation.
  • Total volume of $4,034 with $3,388 arriving in 24 hours confirms this is a late-activation market. Thin early-week volume means price discovery is still incomplete.
  • Liquidity at $26,464 is deep relative to volume, providing a stable order book even if new information reprices the contract before July 3 noon resolution.

Lines Analysis: Qingdao Coastal Temperature Dynamics

The case for 31°C landing exactly rests on early July climatology for Qingdao. Historical daily maximum temperatures in the first week of July cluster in the 29°C to 32°C range at Qingdao Liuting Airport, the primary observing station. A 31°C reading falls squarely in that central band. If the synoptic pattern on July 3 features a weak ridge building over the Yellow Sea with limited sea breeze penetration inland, the daily maximum could reach exactly this threshold. The 24.5% probability reflects that central-band positioning.

What makes NO real here is simple arithmetic. With eleven competing outcomes, even if 31°C represents the single most probable bracket, it still only captures roughly 24.5% of distributed probability. The 30°C and 32°C brackets together absorb a large share of adjacent probability. Qingdao’s temperature also responds sharply to wind direction: onshore flow from the Yellow Sea can cap highs at 28°C to 29°C, while a brief shift to southerly flow off the Shandong interior can push readings toward 33°C or higher. Either directional extreme pushes this bracket to zero.

Signals to Monitor Before July Third Noon

  • China Meteorological Administration (CMA) official Qingdao forecast updates in the 12 to 24 hours before resolution. A CMA forecast of exactly 31°C narrows the spread significantly.
  • ECMWF and GFS ensemble guidance convergence for the July 3 Shandong Peninsula synoptic pattern. Model agreement on a weak ridge supports the central temperature band.
  • Yellow Sea sea surface temperature anomaly data. Above-normal SSTs reduce the marine cooling effect and shift probability toward 32°C or higher outcomes.
  • Wind direction observations at Qingdao station in the early morning hours of July 3. Onshore flow at sunrise signals a cap below 31°C; southerly flow signals upside risk toward 32°C to 33°C.
  • Any shift in adjacent bracket prices (30°C or 32°C) on Polymarket. Rapid appreciation in either neighbor signals trader confidence that 31°C will be missed.

Total volume of $4,034 keeps this market firmly in speculative territory. The data leans toward a temperature outcome somewhere in the 29°C to 33°C corridor, and 31°C sits in the middle of that range. But the eleven-bracket structure mathematically caps any single outcome’s probability, and the -4.0% 24-hour drift suggests models or early forecasts are nudging traders toward adjacent brackets. The market is pricing uncertainty, not science, and here the uncertainty is genuinely high with less than 48 hours to resolution.

Lean NO, Bracket Arithmetic Dominates

The 31°C outcome sits in climatologically plausible territory for Qingdao in early July, but the eleven-bracket structure mathematically limits any single outcome’s ceiling. Adjacent brackets on both sides absorb probability that the central band cannot fully claim.

What the market says: At 24.5% implied probability, traders assign this outcome roughly one-in-four odds. With resolution in under 48 hours, any shift in official CMA forecasts or NWP model consensus could reprice this contract sharply given thin volume.

Key unknown: The single most important input before July 3 noon resolution is the CMA official Qingdao maximum temperature forecast issued in the final 24-hour window. A forecast pinned at 31°C would push YES toward 35% or higher. A forecast of 30°C or 32°C would collapse this bracket toward 10% or lower.

Frequently Asked Questions

Traders collectively assign roughly one-in-four odds that Qingdao's July 3 maximum temperature will equal exactly 31°C. It reflects distributed probability across eleven competing temperature brackets, not a forecast of certainty.

NO pays out if Qingdao's July 3 high lands at any temperature other than exactly 31°C. That includes outcomes as close as 30°C or 32°C. NO currently trades at 0.76 per share, implying 75.5% probability.

A China Meteorological Administration official forecast update within 24 hours of July 3 is the primary mover. NWP model shifts showing Qingdao's high landing at 30°C or 32°C would sharply reprice this bracket.

Resolution closes at 12:00 UTC on July 3, 2026. The contract resolves based on official temperature observations for Qingdao's daily maximum on that date.

Total volume is $4,034, which is thin. Liquidity at $26,464 is relatively deep, but a single moderate bet can shift the price meaningfully. Low volume markets are more sensitive to new information and late-entry traders.

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?

Ridge Builds, Sea Breeze Weakens

A weak high-pressure ridge settles over the Yellow Sea on July 2 to 3, limiting marine cooling and allowing the Qingdao daily maximum to reach exactly 31°C. CMA forecast pins the high at 31°C in the final update. Adjacent brackets (30°C and 32°C) reprice downward as model consensus narrows. YES pushes toward 35% or higher in the final trading hours.

Onshore Flow Caps the High Below Thirty-One

A persistent onshore Yellow Sea wind regime keeps Qingdao's July 3 maximum at 29°C or 30°C. Updated NWP guidance in the 24-hour window confirms the cooler outcome. The 30°C bracket appreciates sharply. The 31°C YES price drops toward 0.10 as traders shift allocation to the adjacent cooler bracket.

Southerly Flow Pushes Readings to Thirty-One Exactly

A brief shift to southerly Shandong interior flow on the morning of July 3 pushes Qingdao toward the upper edge of its sea-influenced range. The official station maximum lands at exactly 31°C. With resolution under 12 hours away and thin volume, the final YES price spike is sharp but short-lived. Bracket arithmetic prevented earlier price discovery.

Anomalous Heat Event Pushes to Thirty-Three or Higher

A short-lived heat dome over central China extends farther east than models predicted, pushing Qingdao's July 3 maximum to 33°C or higher. Both the 31°C and 32°C brackets collapse to near zero simultaneously. The 33°C or higher outcome appreciates sharply. Thin overall market volume amplifies price swings across all brackets in the final hours.

Key macro factor: July 2026 sits in a period of elevated global mean surface temperatures, but Qingdao's coastal position means local Yellow Sea SST anomalies and synoptic wind patterns dominate over basin-scale heat trends for any single day's maximum.

Market Timeline

Jul 1, 4:03 AM
Market Created
Jul 1, 4:04 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.