The current work is based on year-long measurements (April 2015 – March 2016) of continuous BC mass concentrations via Aethalometer-42 taken at a rural site in the southern Delhi outskirts and focuses on analyzing the BC temporal evolution and evaluating the contributions from BCff and BCwb to the total BC mass on daily, monthly and seasonal basis. This is the first time that a BC source-apportionment study is attempted at the Delhi outskirts (~50 km away from the city center), and the results are compared with those performed over urban environments in India (Delhi, Ahmedabad, Gorakhpur).