Even after mild spells of rain on Saturday evening and Sunday morning, there is no respite for Delhiites from the air pollution that has turned the national capital into a gas chamber. The AQIs in Gurugram improved marginally, yet stayed in ‘severe’ on Saturday.
Pollution Watch brings you the measure of Air Quality Index (AQI) in major cities across the country.
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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.
| 0-30 | Good | |
| 31- 60 | Satisfactory | |
| 61- 90 | Moderate | |
| 91- 120 | Poor | |
| 121- 250 | Very Poor | |
| Beyond 250 | Severe |
*All levels are measured in PM2.5
DELHI
Mandir Marg- 400
Shanti Niketan- 619
R.K. Puram- 600
Jahangirpuri- 400
Dwarka- 491
HARYANA
Gurugram- 464
Faridabad- 484
Rohtak- 490
MUMBAI
Pirojshanagar- 57
Powai- 26
Bandra West- 36
Lower Parel- 22
Worli- 25
BENGALURU
BTM Layout- 36
BWSSB Kadabesanahalli- 47
Jayanagar- 66
Peenya- 36
The pollution level figures are as per the data taken on Sunday 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.