Foreword

Assessment of air quality is an essential pre-requisite for taking necessary measures for controlling the menace of air pollution.

This report is the outcome of a survey of ambient air quality at major traffic intersections of Delhi. The report makes an attempt to provide information on selected primary and secondary air pollutants present in the atmosphere of Delhi.

We hope, the information contained in this report will be useful to those engaged in controlling the problem of air pollution in the country at large and Delhi in particular .

Assessment of air quality is an essential pre-requisite for taking necessary measures for controlling the menace of air pollution.