Real-Time Climate Data & Historical Trends Since 1920
The latest measurements showing the state of our planet's climate system
Carbon dioxide levels have increased by over 50% since pre-industrial times, rising faster than at any point in the last 800,000 years
In May 2025, atmospheric CO₂ reached 430.5 ppm, the highest concentration in over 2 million years. The 2024 annual increase of 3.75 ppm was the largest one-year jump in the 67-year measurement record. CO₂ levels were stable at ~280 ppm for 10,000 years before the Industrial Revolution.
Temperature changes relative to the 1880-1920 pre-industrial baseline show accelerating warming
Cumulative ice mass loss from Greenland and Antarctica is accelerating, contributing to rising sea levels
Since the 1990s, ice loss from Greenland and Antarctica has quadrupled, reaching approximately 400 billion tons per year. Greenland lost 177 Gt in 2023, while Antarctic ice sheet melting set a record on January 2, 2025. Scientists warn that current warming of +1.2°C may trigger irreversible collapse, with +1.5°C being "too high" to save the ice sheets.
Critical observations from the latest climate science research
CO₂ growth rate reached 2.66 ppm/year in mid-2025, up from less than 1 ppm/year in 1960-1970. The current rate is 100× faster than natural increases at the end of the last ice age.
2024 was 1.28°C warmer than the 1951-1980 baseline. The year saw 15 consecutive months (June 2023-Aug 2024) of record temperatures—an unprecedented heat streak.
Antarctica could contribute 28 cm to sea level by 2100, potentially more if warming exceeds critical thresholds. West Antarctic Ice Sheet appears to be in irreversible retreat.
Forests and oceans are absorbing less CO₂ due to record heat and wildfires, creating a dangerous feedback loop that accelerates warming.
March 2025 saw the lowest Arctic sea ice extent in the 47-year satellite record, beating the previous low from 2017 by 150,000 square kilometers.
2024 extreme weather killed thousands globally, with record-breaking heatwaves, droughts, wildfires, storms and floods reaching unprecedented levels.