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Climate Change

Monthly Atmospheric Carbon Dioxide December 2026

Monthly Atmospheric Carbon Dioxide December 2026 · December 2026 · Trading open

$1.1K vol.

About this market

Traders price Above 427 at 90%, ahead of Above 428 at 84%.

The market has $1.1K in volume across 278 trades; the most recent was on Oct 20, 2026.

Trading closes on Jan 5, 2027. The result is confirmed by National Oceanic and Atmospheric Administration (NOAA).

Global average atmospheric carbon dioxide for a given month.

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 427Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 427 ppm in December 2026.
  • Above 428Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 428 ppm in December 2026.
  • Above 429Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 429 ppm in December 2026.
  • Above 430Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 430 ppm in December 2026.
  • Above 431Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 431 ppm in December 2026.
  • Above 426Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 426 ppm in December 2026.
Show rules for all 8 outcomes
  • Above 432Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 432 ppm in December 2026.
  • Above 433Resolves Yes if Monthly Average Atmospheric Carbon Dioxide is greater than 433 ppm in December 2026.

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

Trading opened
Oct 30, 2025
Trading closes
Jan 5, 2027
Expected result
Jan 5, 2027
Expected payout
Jan 5, 2027

More Monthly 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.