After a short-lived relief, Delhi’s air pollution levels inched towards the ‘severe’ zone due to calm winds, low temperatures and high humidity.
Experts said the situation is likely to worsen in the next 24 hours, with some relief expected on Saturday.
The AQI for Rohini (414), Anand Vihar (422), Nehru Nagar (410), Dwarka Sector 8 (404) and Bawana (407) entered the ‘severe’ zone. Neighbouring Ghaziabad (415), Greater Noida (402), Noida (402) also recorded ‘severe’ pollution levels, while the AQI in Faridabad (391) bordered the ‘severe’ zone.
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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- 346
Rohini- 414
RK Puram- 340
ITO- 361
Dwarka- 387
HARYANA
Gurugram- 276
Faridabad- 352
Rohtak- 309
MUMBAI
Lower Parel- 143
Powai- 169
Bandra- 305
Pirojshanagar- 166
Worli- 143
BENGALURU
BTM Layout- 59
BWSSB Kadabesanahalli- 66
Hebbal- 66
Peenya- 50
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.