Daily Aver­age Mauna Loa CO2:

Times Standard (Eureka) - - FRONT PAGE -

Week be­gin­ning on April 5, 2020: 416.45 ppm Weekly value from 1 year ago: 412.67 ppm Weekly value from 10 years ago: 391.12 ppm Last up­dated: April 17, 2020

Source: Na­tional Oceanic and At­mo­spheric Ad­min­is­tra­tion; Mauna Loa Ob­ser­va­tory has been mon­i­tor­ing C02 lev­els since 1958

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