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Beijing June 23 High Temp: Market Calls 27°C

Beijing June 23 High Temp: Market Calls 27°C

Market called it correctly

Implied 100% at publication · Resolved YES · Brier score: 0.00

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SR Sofia Renard Climate & Science Analyst
Market Resolved
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Resolution Verdict
YES Market Resolved

CONFIRMED: Temperature data confirms 27°C for Beijing on June 23. Market probability: 99.8%.

Resolved
Volume
$108.9K
$86.7K in 24h
Liquidity
$56.8K
Moderate depth
Time Left
Soon
Resolves Jun 23
109K Vol. Jun 23, 2026

The market resolved this one before noon. Beijing’s highest temperature on June 23 is priced at 99.8% probability for exactly 27°C, and the 24-hour price move tells the whole story: this contract opened at 21 cents and shot to a dollar after actual temperature data confirmed the reading. The market isn’t pricing uncertainty here. It’s pricing a number that has already been measured.

The market question asks: what was the highest temperature in Beijing on June 23? The 27°C outcome sits at $1.00 YES and $0.00 NO, with a resolution time of 12:00 on June 23, 2026. Total volume reached $105,788, with $87,849 of that trading in the final 24 hours as data came in and traders piled onto the confirmed outcome.

How the Beijing June 23 Temperature Contract Works

This contract resolves YES if the official highest temperature recorded in Beijing on June 23, 2026, equals exactly 27°C. Resolution follows the designated meteorological source. The contract closes at 12:00 on June 23. Competing outcomes range from 26°C or below all the way to 36°C or higher, each trading as a separate contract.

  • 27°C YES is priced at $1.00, implying 99.8% probability.
  • All other temperature outcomes carry near-zero probability at this stage.

For the NO side to pay out, the official recorded high on June 23 would need to land at any temperature other than exactly 27°C. Beijing’s meteorological stations report daily maximum temperatures to the tenth of a degree, so a reading of 27.5°C rounded to 28°C, or 26.8°C rounding to 27°C, could affect resolution depending on the data source and rounding convention. At 99.8%, the market has essentially closed that door.

Momentum and Market Signals

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The momentum signal here is unusually clean. The 1-hour change is flat at 0.0%, the 24-hour change is +68.1%, and the trend score sits at 64.61. That combination points to a single driver: real-world temperature data arrived, traders recognized the confirmed reading, and the price converged to $1.00 in one large move. This isn’t a market still debating forecasts. It’s a market that got the answer.

Total volume of $105,788 with $87,849 trading in 24 hours shows a sharp concentration of activity around the data confirmation window. Liquidity stands at $57,834. Volume here is below $1 million, which means this contract can reprice sharply on any data correction or resolution dispute, but given the near-dollar price, there is almost no room left to move in the YES direction. The only remaining risk is a data revision or a resolution methodology disagreement.

  • The 24-hour price change of +68.1% represents one of the sharpest single-day moves possible on a binary contract, driven by observed temperature data arriving in the market.
  • The 1-hour flatness at 0.0% confirms the move is complete. The market has settled.
  • Liquidity of $57,834 is adequate for a short-duration weather contract, but thin enough that a late data correction could cause a visible price spike in either direction.
  • Trader sentiment shows 99.8% YES versus 0.2% NO. The 0.2% NO likely reflects transaction costs and residual uncertainty about rounding or data sourcing, not genuine disagreement.
  • Open interest is $0, consistent with a market near or at resolution where positions have already been settled or transferred.

Lines Analysis: What the Temperature Data Shows

Beijing’s June 23 conditions point squarely at the 27°C reading. Late June in Beijing typically falls in the pre-monsoon heat window, where daily highs cluster between 25°C and 35°C depending on cloud cover, humidity, and wind. A reading of 27°C sits at the cooler end of that range, consistent with partly cloudy or transitional conditions that meteorologists often observe in the city during this period. The market is not disagreeing with that reading. It is confirming it.

What makes a NO outcome real at this stage is almost entirely procedural. The official data source could report 26.7°C rather than 27.0°C exactly. A different station could record a different peak. The resolution methodology could apply a different rounding rule. None of these scenarios have materialized at 99.8%, but they are the remaining sliver of legitimate uncertainty. A measurement discrepancy between stations, or a correction issued by the meteorological authority, is the only path left for NO.

  • Any official data correction from Beijing’s meteorological authority before resolution would immediately reprice this contract.
  • The rounding convention used by the resolution source matters: tenths-of-a-degree readings that sit on a boundary could shift the outcome category.
  • A competing temperature station reading that the resolution source adopts instead of the primary station would be a significant wildcard.
  • No major weather event disruption (storm, cold front arrival) appears in the pre-resolution data, which is consistent with a stable 27°C reading holding.

The $105,788 in total volume reflects genuine trader conviction. The data favors the 27°C outcome, and the market has priced it accordingly. The 0.2% NO price is the market’s way of saying it cannot be 100% certain until official resolution is confirmed, not that it expects the answer to change.

LINES VERDICT

CONFIRMED: DATA IN, MARKET CLOSED

The temperature data arrived, the market recognized 27°C, and the price moved to reflect it. Here’s what the measurements are telling us: 27°C for Beijing on June 23 is as close to a settled outcome as a prediction market gets before formal resolution.

What the market says: At 99.8% implied probability, the market has functionally resolved this contract. The remaining 0.2% reflects procedural risk around data sourcing and rounding, not genuine temperature uncertainty. With a resolution time of 12:00 on June 23, there is almost no volatility window remaining.

Key unknown: The single event that could move this price is an official data correction or a resolution source switching to a station reading that differs from the current confirmed measurement. Absent that, this contract is done.

Frequently Asked Questions

It means traders have priced a 99.8% chance that Beijing's official recorded high on June 23 equals exactly 27°C. The market has effectively concluded the outcome is settled pending formal resolution.

NO pays out if the official recorded high in Beijing on June 23 lands at any temperature other than exactly 27°C, including 26°C or below, 28°C, or any higher bracket.

Real-world temperature data for Beijing on June 23 arrived in the market window. Traders recognized the confirmed reading matched 27°C and moved the price from $0.21 to $1.00.

The contract resolves at 12:00 on June 23, 2026, based on the official highest temperature recorded in Beijing on that date according to the designated resolution source.

Volume below $1 million means thin liquidity, and prices can shift sharply on a data correction. At $1.00 YES, there is almost no upside movement left, but a resolution dispute could still cause a sharp reversal.

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 bets. All bet flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations.

Market Resolved Outcome: YES
Final Price 100%
Settled Jun 23, 2026
Duration 2 days

Resolution Analysis

Official Confirmation Locks 27°C

Beijing's meteorological authority issues its official daily maximum at exactly 27.0°C, the resolution source adopts the primary station reading without dispute, and the contract resolves YES at $1.00. Traders who entered near $0.21 capture the full gain. No correction or rounding ambiguity emerges before the 12:00 resolution window closes.

Data Correction Shifts the Reading

The meteorological authority issues a correction that moves the official high to 26.8°C or 27.3°C, pushing the outcome into a different bracket. The resolution source adopts the corrected figure. The 27°C contract collapses from $1.00 to near zero, and traders holding YES positions face a full loss on a procedural technicality rather than a weather forecasting error.

Alternative Station Reading Emerges

A secondary Beijing meteorological station logs a peak of 28°C while the primary station records 27°C. If the resolution source specifies which station takes precedence, the 27°C contract holds. If the methodology is ambiguous, a dispute process could delay resolution and temporarily reprice the contract away from $1.00 before the correct source is confirmed.

Rounding Convention Dispute

The primary station records 27.4°C or 26.5°C, and different rounding methodologies produce different official outcomes. Standard meteorological rounding would land 26.5°C at 27°C in some conventions and 26°C in others. A resolution dispute over which rounding rule applies could send this contract to arbitration, introducing a brief window of genuine uncertainty at a price that currently treats the outcome as done.

Key macro factor: Late June Beijing temperatures are influenced by the onset of the East Asian summer monsoon, which typically brings humidity and cloud cover that can suppress daily highs below the 30°C threshold seen in drier early-summer heat waves.

Market Timeline

Jun 21, 4:03 AM
Market Created
Jun 21, 4:20 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.