The air quality for Gurugram was said to be the cleanest on Monday since 3rd October this year, but it saw a plunge on Tuesday. The southern states saw a surprising rise in the AQI as well.
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- 395
Shantipath- 300
R.K. Puram- 408
Shanti Niketan- 300
Dwarka- 370
HARYANA
Gurugram- 258
Faridabad- 447
Rohtak- 136
MUMBAI
Pirojshanagar- 75
MPCB Bandra- 112
Bandra East- 74
Lower Parel- 93
BENGALURU
BTM Layout- 275
BWSSB- 131
Peenya- 77
Saneguravahalli- 55 PM10
The pollution level figures are as per the data taken on Tuesday between 09:00 and 11:00 IST unless mentioned otherwise.