Live charts of Earth's key climate indicators, built from official NOAA, NASA and NSIDC records. Each one shows the latest value and the long-term trend — updated from public data, free, no sign-up.
The charts are built from official, public records: atmospheric CO₂ and methane from NOAA's Global Monitoring Laboratory, global temperature from the HadCRUT record, sea level and Arctic sea ice via Our World in Data (NASA/NSIDC sources). Each indicator page names its exact source and lets you download the underlying data.
How current is it?
Each chart shows a "data through" date. The figures are snapshots taken from the source datasets when the page was last built, so they lag the very latest month or two — climate indicators are slow-moving, so this makes little difference to the trend.
Why do these indicators matter?
Together they are the "vital signs" of the climate system: how much heat-trapping gas is in the air (CO₂, methane), how much the surface has warmed (temperature), and two of the clearest consequences (rising seas, shrinking Arctic ice). Watching them together shows how tightly they are linked.