CO2 Peak WatchCOP31 opens today, 9 Nov 2026, Antalya

159 countries are past their CO2 peak. Together they emit what they did in 1990.

World emissions still set a record in 2024. The reason is the other 56 countries: they went from 4.0 to 19.6 billion tonnes. Change the definition of "past peak" below and watch the story hold or crack.

1. Two groups, one total

Every country is placed in a group by its own record: has its emissions already hit their highest year? Annual fossil CO2 and cement, 1950 to 2024.

Past peak means

Tap or drag across the chart to read any year. Countries without records in early years count as zero before they begin. Country totals exclude international aviation and shipping, so they add up to less than the world figure of 38.6 billion tonnes.

2. Guess the peak

Pick a country, drag the marker to the year you think its emissions were highest, then reveal the real line.

3. The peak board: 41 countries above 100 Mt

These 41 emit 93% of the country total. Sort by any column, tap a row to load it into the guessing game above.

All 215 countries and territories (table)

Why today

The 31st UN climate conference (COP31) opens today in Antalya, Turkey, and runs 9 to 20 November 2026. NOS reported the start on 9 November 2026 (Dutch source, translated). The dates and venue are from Wikipedia (secondary source) because unfccc.int blocked automated access. This page needs none of that to stand: it asks who has actually bent their curve, and how much of the world that covers.

Sources

  1. Our World in Data CO2 and greenhouse gas emissions dataset, file owid-co2-data.csv (GitHub repository owid/co2-data, last updated 2 June 2026, data to 2024). Variables co2 (annual CO2 excluding land-use change, million tonnes), population, co2_per_capita, cumulative_co2. Underlying source: Global Carbon Budget 2025, Global Carbon Project (globalcarbonbudget.org). Fetched 9 Nov 2026, 215 countries with a 2024 value.
  2. NOS, "Wekdienst 9/11: Wegenwacht staakt, VN-klimaattop van start", 9 Nov 2026 (nos.nl). Dutch, translated.
  3. Secondary: Wikipedia, "2026 United Nations Climate Change Conference" (en.wikipedia.org), read 9 Nov 2026, for dates and venue.