The heavy rains and hailstorm on Tuesday gave the National Capital Region the cleanest air of the year and the trend continued to Wednesday when the AQIs increased only marginally.
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- 193
Shantipath- 300
R.K. Puram- 209
Shanti Niketan- 300
Dwarka- 162
HARYANA
Gurugram- 165
Faridabad- 161
Rohtak- 58
MUMBAI
Vikhroli- 88
MPCB Bandra- 34
Bandra East- 126
Lower Parel- 54
BENGALURU
BTM Layout- 167
BWSSB- 61
Peenya- 78
Saneguravahalli- 63
The pollution level figures are as per the data taken on Wednesday at 11:00 IST unless mentioned otherwise.