The numbers that matter
Six indicators that define the crisis and the transition — each linked to the primary scientific source, updated as the science updates.
424 ppm
Atmospheric CO₂
Highest in at least 3 million years — up from 280 ppm pre-industrial.
NOAA Global Monitoring Laboratory ↗
+1.3 °C
Warming vs pre-industrial
Global mean surface temperature anomaly, decade average.
NASA GISS ↗
~4 mm/yr
Sea level rise
Current rate of global mean sea level rise — and accelerating.
NASA Sea Level ↗
30%+
Electricity from renewables
Renewables passed 30% of global electricity generation, led by solar and wind.
Ember Global Electricity Review ↗
−12.4%
Arctic sea ice per decade
September minimum extent decline relative to the 1981–2010 average.
NSIDC ↗
~59 Gt
Annual GHG emissions
Total greenhouse gas emissions in CO₂-equivalent per year.
UNEP Emissions Gap Report ↗
Want the analysis behind the numbers? Our reporting turns these datasets into stories you can act on.