Besides Delhi, 30 other cities which showed an increase in PM10 level.
Delhi is among the 31 cities under the National Clean Air Programme (NCAP) which have shown an increase in the level of PM10 pollutant concentration in 2020-21, the government told Parliament on Thursday.
Responding to a query on the number of cities that have reported an improvement or deterioration in air quality index (AQI) in the last two years under NCAP, Minister of State for Environment Ashwini Choubey said 96 cities indicated a decrease in PM10 concentration and 31 cities showed an increase in the pollutant level.
"The ambient air quality data of Particulate Matter 10 or PM10 (size less than 10 micrometres) of 132 non-attainment/ metropolitan cities indicated a decrease in PM10 concentration in 96 cities, increase in PM10 concentration in 31 cities and no change in concentration in four cities in 2020-2021 as compared to 2019-2020," Mr Choubey said in a written response.
The data is of the 132 non-attainment cities that have fallen short of the national ambient air quality standards for over five years under the NCAP.
Data of Faridabad was not available for comparison, he said.
Under the NCAP, launched in 2019 as a national-level strategy to reduce air pollution, Rs 423.21 crore has been sanctioned for non-attainment cities to initiate actions such as the expansion of monitoring network, construction and demolition waste management facilities, non-motorised transport infrastructure, green buffers zone, use of mechanical street sweepers and composting units, the minister said.
According to the data, Delhi's PM10 level increased from 192 micrograms per cubic metre (ug/m3) of air in 2019-20 to 193 ug/m3 in 2020-21.
Besides the national capital, the other 30 cities which showed an increase in PM10 level include Ahmedabad, Amritsar, Ludhiana, Agra, Visakhapatnam, Guwahati, Jammu, Srinagar, Indore, Thane and Hyderabad.
The 96 cities which showed improvement in air quality or decrease in PM10 concentration in 2020-21, include Noida, Meerut, Lucknow, Kanpur, Dehradun, Rishikesh, Varanasi, Patna, Chandigarh, Jaipur, Jodhpur, Raipur, Surat, Ranchi, Kolkata, Howrah, Bengaluru, Aurangabad, and Navi Mumbai.
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