Delhi's ambient PM2.5 concentrations data for 2006-2018

This dataset presents Delhi's ambient PM2.5 data in the raw format at 15-minute interval for the period of 2006 to 2018. The data is obtained from the online open repository operated and maintained by the Central Pollution Control Board (CPCB), India. https://app.cpcbccr.com/ccr/#/caaqm-dashboard-all/caaqm-landing (last accessed August 21st, 2020). Use the advance search option to download. The data request conditions vary by pollutant, time step, and total time period. The data was filtered for nulls, negatives, and unexplainable feeds for quality control. Cleaned composite concentrations file for all of Delhi includes hourly averages, monthly averages, annual averages, number of operating stations by year, and data availability as % of 15-minute data points in a year