The air quality in the national capital and the adjoining regions returned to ‘very poor’ and ‘severe’ in many places after a temporary respite over the weekend due to string winds.
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As per Skymet, the reduced flow of air is likely to lead to an increase in the accumulation of pollutants in the region and on November 21 and 22 when the situation could worsen even further.
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.
| 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- 345
Rohini- 411
RK Puram- 324
ITO- 375
Dwarka- 370
HARYANA
Gurugram- 281
Faridabad- 352
Rohtak- 311
MUMBAI
Lower Parel- 148
Powai- 190
Bandra- 121
Pirojshanagar- 175
Worli- 230
BENGALURU
BTM Layout- 53
BWSSB Kadabesanahalli- 42
Hebbal- 41
Peenya- 40
The pollution level figures are as per the data taken on Thursday between 08:00 – 09:00 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.