Winds came to the rescue of Delhi’s air pollution woes, as the air quality improved to the ‘very poor’ category on Tuesday from the ‘severe’ category till Monday.
Pollution Watch brings you the measure of Air Quality Index (AQI) in major cities across the country.
The AQI is measured by taking into account the PM (particulate matter). The pollution of a place is measured either in PM10 or PM2.5, depending on which particle is more dominant in the air in that place.
PM10 is the particle which is 10 micrometers or less in diameter and PM2.5 is the finer particle with a diameter measuring 2.5 micrometers or less.
PM2.5 is considered more harmful since it is finer and can travel more deeply into the lungs and cause very harmful effects. These tiny particles in the air reduce visibility and cause the air to appear hazy when their levels are high.
*All levels are measured in PM2.5
Lodhi Road- 349
Shanti Niketan- 399
R.K. Puram- 341
Lower Parel- 14
BTM Layout- 138
The pollution level figures are as per the data taken on Tuesday between 11:00-12 noon IST unless mentioned otherwise. The NGT has formed a committee to look for ways to combat the growing hazards for air pollution in Delhi.