Hyderabad: Satellite images taken by Sentinel hub India show that Nitrogen Oxide levels have decreased in Delhi and other nearby states given the lockdown.

Satellite image shared by Scientist Ashim K. Mitra, Delhi show surrounding areas in blue which means nitrogen oxide levels are very less in the atmosphere.

Nitrogen oxide usually enters the atmosphere due to the burning of fossil fuel and biomass. Since industries are shut, the nitrogen oxide levels have dropped.

Not only Delhi, Hyderabad has also seen a considerable drop in pollution, said the Telangana Pollution Control Board (PCB) Officials.

“The air quality index has considerably improved. During evenings (6pm -8pm) the air quality used to be 100-120pm. For the last few days, it has dropped to 60 pm. This means there is almost 50% drop in the pollution levels,” said PCB officer D Prasad.

Another officer R Venkanna stated that pollution levels have decreased because fewer vehicles are plying in the city due to the lockdown and almost all industries are shut.

Considerable decrease in Pollution levels in other metropolitan cities

System of Air Quality and Weather Forecasting And Research (SAFAR) said the air quality index in other metropolitan cities has also improved.

“The SAFAR model suggests AQI likely to marginally deteriorate but in the satisfactory category on 31st March. Satisfactory to moderate AQI is expected on 1st April. This forecast now considers estimated reduction in local emissions due to lockdown,” SAFAR said.

According to its forecast, the air quality index in Delhi, Mumbai, Ahmadabad, and Pune are at a satisfactory level with an average AQI of 70.

Aiswarya Sriram

Aiswarya Sriram is a budding multimedia journalist and is currently working for NewsMeter as a "Factcheck Freelancer". A graduate from Indian Institute of Journalism and New Media (IIJNM) Bangalore, Aiswarya has earlier worked with The Logical Indian and has interned with Republic TV. Aiswarya, a Tamilian who was born and brought up in Mumbai, loves to do rural reporting. She has visited Byadgi Taluk of Karnataka, to write about the issues faced by chilli factory workers there, earlier in 2019. A craft enthusiast, Aiswarya also does quilling, painting and glass work. On her off-days, she loves to read crime-thrillers and watch anime. She primarily reports on civic issues, GHMC, human-interesting features, and fact-checking video stories.

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