Mauna Loa CO2

April 2017

 

NOAA-ESRL

SCRIPPS UCSD

April 2017

409.01

408.95 ppm

April 2016

407.42

407.57 ppm

April 2015

403.28

403.45 ppm

Last Update: May 5, 2017
May 6, 2017
View Data: NOAA  |  CO2.Earth Scripps

Mauna Loa Observatory (MLO)  |  Atmospheric CO2
monthly mean concentrations  |  ppm = parts per million

 

Two independent records of CO2 changes are maintained in parallel at Mauna Loa.   A graph showing the two records together is available at the bottom of the Scripps CO2 Program website

Use the tabs below to view the latest monthly CO2 data, charts and related links.

 

CO2 Past.  CO2 Present.  CO2 Future.