HQCasanova Weekly CO2 API

HQCasanova Weekly CO2
The Weekly CO2 API is a RESTful service providing the latest weekly atmospheric CO2 average as measured at NOAA's Mauna Loa Observatory in Hawaii. The data is sourced from MLO's RSS feed. The averages recorded for the same week 1 and 10 years ago can also be retrieved. Responses are formatted in plain text.