Climate TrendsSulfur hexafluoride (SF₆): global average concentration
Latest month12.70 pptMay 2026
vs 12 months earlier+0.51 ppt
vs 1998×2.911998→2025
Largest yearly rise2025+0.44 ppt
Yearly increase
+0.19 ppt
+0.20 ppt
+0.25 ppt
+0.23 ppt
+0.21 ppt
+0.24 ppt
+0.27 ppt
+0.29 ppt
+0.29 ppt
+0.29 ppt
+0.26 ppt
+0.30 ppt
+0.31 ppt
+0.33 ppt
+0.33 ppt
+0.33 ppt
+0.35 ppt
+0.35 ppt
+0.34 ppt
+0.32 ppt
+0.37 ppt
+0.38 ppt
+0.39 ppt
+0.40 ppt
+0.44 ppt
Annual means
| Year | Annual mean | Change |
|---|---|---|
| 2025 | 12.24 ppt | +0.44 |
| 2024 | 11.81 ppt | +0.40 |
| 2023 | 11.41 ppt | +0.39 |
| 2022 | 11.02 ppt | +0.38 |
| 2021 | 10.63 ppt | +0.37 |
| 2020 | 10.27 ppt | +0.32 |
| 2019 | 9.94 ppt | +0.34 |
| 2018 | 9.60 ppt | +0.35 |
| 2017 | 9.26 ppt | +0.35 |
| 2016 | 8.91 ppt | +0.33 |
| 2015 | 8.58 ppt | +0.33 |
| 2014 | 8.25 ppt | +0.33 |
| 2013 | 7.92 ppt | +0.31 |
| 2012 | 7.60 ppt | +0.30 |
| 2011 | 7.30 ppt | +0.26 |
| 2010 | 7.04 ppt | +0.29 |
| 2009 | 6.76 ppt | +0.29 |
| 2008 | 6.47 ppt | +0.29 |
| 2007 | 6.18 ppt | +0.27 |
| 2006 | 5.91 ppt | +0.24 |
| 2005 | 5.67 ppt | +0.21 |
| 2004 | 5.46 ppt | +0.23 |
| 2003 | 5.23 ppt | +0.25 |
| 2002 | 4.98 ppt | +0.20 |
| 2001 | 4.78 ppt | +0.19 |
| 2000 | 4.58 ppt | +0.20 |
| 1999 | 4.39 ppt | +0.18 |
| 1998 | 4.21 ppt | – |
NOAA GML global mean from the marine surface network (monthly). Recent values are preliminary.