According to the report, the list of 50 cities includes seven cities in India. These include Delhi (102), Mumbai (43.4), Kolkata (52.1), Bengaluru (27.1), Chennai (34.3), Hyderabad (38.2) and Ahmedabad (56.7). Lahore was the worst situation in Asia. In Lahore, the annual average of PM2.5 was 12.5. It was 86.5 in Dhaka, Bangladesh. Studies suggest that monitoring can be improved by using low-cost sensors. This will help governments and researchers find a solution to pollution. The report looks at cities like New York and Chicago. The levels of PM2.5 were 8.2 and 10 respectively.
IIT Kanpur has prepared a report indicating an increase in Delhi’s pollution measurement sensors. The report was prepared by Sachidanand Tripathi, a member of the National Clean Air Program and Professor of Kanpur IIT, and Abhay Kardikar, Director of Kanpur IIT. He gave examples and said that incidents of hay burning were happening in Najafgarh area. There is a monitoring station within thirty kilometers. While there is heavy traffic in Dhaulkuan, there is a monitoring station at RK Puram at a distance of eight kilometers. He said that in a city like Delhi, there are 36 monitoring stations, while there should be 200-300 air quality sensors. Cities such as Beijing and London have hundreds of monitoring stations, making it possible to accurately measure air quality there.
Particle or particle pollution is a mixture of solid particles and liquid droplets present in the atmosphere. The tiny particles in the air are so small that you can’t even see with the naked eye. Some particles are so small that they can only be detected using an electron microscope. Particle pollution includes PM2.5 and PM10, which are very dangerous. Particles come in a variety of sizes and can be caused by both human and natural resources. Resources can be primary and secondary. Primary sources include automobile emissions, dust and cooking fumes. A secondary source of pollution can be a complex process of chemicals such as sulfur dioxide and nitrogen oxides. These particles mix with the air and pollute it. Apart from this there are forest fires, wood burning stoves, industrial fumes, dust from construction works, air pollution etc. and other sources. These particles get into your lungs, which can read cough and asthma attacks. There is a risk of many more serious diseases including hypertension, heart attack, stroke.