Climate Trends
i
Image: U.S. National Park Service · Public domainGlobal temperature and CO₂ today
Last updated:
Latest monthly anomaly+1.40 °CAugust 2026
Warmest year on record2024+1.29 °C
Latest monthly CO₂427.55 ppmAugust 2026
CO₂ change in 12 months+2.07 ppm
Global temperature anomaly by year
Global temperature anomaly by year
Temperature anomalies are in °C relative to the 1951–1980 average.
Annual mean CO₂ at Mauna Loa
The 10 warmest years
| # | Year | Anomaly |
|---|---|---|
| 1 | 2024 | +1.29 °C |
| 2 | 2025 | +1.19 °C |
| 3 | 2023 | +1.17 °C |
| 4 | 2016 | +1.01 °C |
| 5 | 2020 | +1.01 °C |
| 6 | 2019 | +0.98 °C |
| 7 | 2017 | +0.92 °C |
| 8 | 2015 | +0.90 °C |
| 9 | 2022 | +0.89 °C |
| 10 | 2018 | +0.85 °C |
Year pages
- 2025
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2002
- 2001
- 2000
- 1999
- 1998
- 1997
- 1996
Method
Temperature: GISTEMP v4 Land-Ocean Temperature Index (global means), anomalies relative to 1951–1980 in °C; the annual value is NASA’s January–December mean. CO₂: NOAA GML monthly mean mole fraction at Mauna Loa in ppm; annual values are averages of the available months (only complete years are ranked). Recent values may be revised by the data providers.
About this page
How much warmer is the planet than in the mid-20th century, and how fast is carbon dioxide rising? Figures below come directly from NASA’s GISTEMP analysis and NOAA’s Mauna Loa record.