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Climate Change

Atmospheric Carbon Dioxide December 2027

Atmospheric Carbon Dioxide December 2027 · December 2027 · Trading open

$832 vol.

About this market

Traders price Above 430 at 99%, ahead of Above 431 at 99%.

The market has $832 in volume across 121 trades; the most recent was on Sep 3, 2026.

Trading closes on Jan 5, 2028. The result is confirmed by National Oceanic and Atmospheric Administration (NOAA).

The Global Monitoring Laboratory has measured carbon dioxide and other greenhouse gases for several decades at a globally distributed network of air sampling sites. Data are reported as a dry air mole fraction defined as the number of molecules of carbon dioxide divided by the number of all molecules in air, including CO2 itself, after water vapor has been removed. The mole fraction is expressed as parts per million (ppm).

Rules and timeline

Each outcome is its own contract. A Yes contract pays $1 if its outcome happens and $0 if not; a No contract pays the reverse. Because the contracts trade separately, their chances don't have to add up to 100%.

  • Above 430Resolves Yes if Atmospheric Carbon Dioxide is greater than 430ppm in 2027.
  • Above 431Resolves Yes if Atmospheric Carbon Dioxide is greater than 431ppm in 2027.
  • Above 432Resolves Yes if Atmospheric Carbon Dioxide is greater than 432ppm in 2027.
  • Above 433Resolves Yes if Atmospheric Carbon Dioxide is greater than 433ppm in 2027.
  • Above 435Resolves Yes if Atmospheric Carbon Dioxide is greater than 435ppm in 2027.
  • Above 434Resolves Yes if Atmospheric Carbon Dioxide is greater than 434ppm in 2027.
Show rules for all 8 outcomes
  • Above 436Resolves Yes if Atmospheric Carbon Dioxide is greater than 436ppm in 2027.
  • Above 437Resolves Yes if Atmospheric Carbon Dioxide is greater than 437ppm in 2027.

Result confirmed by National Oceanic and Atmospheric Administration (NOAA).

Trading opened
Jan 8, 2025
Trading closes
Jan 5, 2028
Expected result
Jan 5, 2028
Expected payout
Jan 5, 2028

More Atmospheric Carbon Dioxide markets

Other dates in this series

Prices are the last trades on the ForecastEx exchange and can be delayed by about ten minutes. A chance is the price of a Yes contract, not a forecast by Aries. Event contracts involve risk, including the loss of the full amount paid. Information on this page is for informational purposes only and is not investment advice.