Reference documents, standards, and tools for India's National Air Quality Index (AQI) and Continuous Ambient Air Quality Monitoring (CAAQMS) network.
Understanding AQI
PDF
About the National Air Quality Index
Overview of India’s AQI, its categories, and its public purpose.
PDF
How is AQI Calculated?
Methodology, sub-index formula, and pollutant breakpoint reference.
XLS
AQI Calculator
Spreadsheet tool to calculate AQI from manually entered pollutant concentrations.
PDF
Report on National Air Quality Index (2014)
Technical report on the National Air Quality Index framework and methodology.
Standards & Protocols
PDF
Protocol for Data Transmission from CAAQM Stations
Data format, parameter naming, connectivity, and station metadata protocol.
Monitoring Network
Action Plans & Bulletins
PDF
Graded Response Action Plan (GRAP)
Category-wise emergency action framework for Delhi-NCR pollution episodes.