The air quality trend of the national capital saw a plunge as the AQI turned to ‘very poor’ from Saturday’s ‘poor’. Gurugram, meanwhile showed improvement.
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 unless mentioned otherwise
DELHI
Mandir Marg- 260
Shantipath- 141
R.K. Puram- 295
Shanti Niketan- 141
Dwarka- 243
HARYANA
Gurugram- 144
Faridabad- 228
Rohtak- 195
MUMBAI
Pirojshanagar- 85
MPCB Bandra- 102
Bandra East- 159
Lower Parel- 52 O3
BENGALURU
BTM Layout- 149
BWSSB- 125
Peenya- 96
Saneguravahalli- 65
The pollution level figures are as per the data taken on Sunday at 09:00 IST unless mentioned otherwise. The NGT has formed a committee to look for ways to combat the growing hazards for air pollution in Delhi