State of air in Delhi NCR – pollution and solution
TERI and Automotive Research Association of India have conducted an exhaustive scientific study of source apportionment of PM2.5 and PM10 concentrations in Delhi NCR to derive sectoral contributions. The modelling was based on comprehensive air quality monitoring which was carried out at twenty representative locations for 10 days at each location for two seasons (in 2016-17) in Delhi and NCR. Both PM10 and PM2.5 average concentrations were found to be more than the prescribed National Ambient Air Quality Standards by CPCB [Central Pollution Control Board]. The daily permissible limits of PM2.5 and PM10 are 60 g/m3 and 100 g/m3 respectively, as per the National Ambient Air Quality Standards.
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The study also projects future sectoral emissions and air quality, and it tests several interventions which can reduce pollution in the region by 58% in PM2.5 and 61% in PM10 by 2030. This will enable development and testing of appropriate strategies for control of air pollution in Delhi-NCR.
The average concentrations that were monitored were:
| Average Concentration [across all sites in Delhi-NCR] |
PM10 | PM2.5 |
| Winter | 314 ± 77 μg/m3 | 168 ± 45 μg/m3 |
| Summer | 188 ± 37 μg/m3 | 90 ± 17 μg/m3 |