The pollution level in Ghaziabad was found 2.5 times higher than Tuesday making it the third most polluted city in the country on Wednesday. Just in a day, the air quality index (AQI) rose from 95 to 245. Also, there was a substantial increase recorded in levels of PM 10 and PM 2.5.
The quality of air in the city was quite satisfactory after it received rains on Monday night followed by short spells of rain and cloudy weather on Tuesday. The pollution of the city was under the green zone.
The AQI of Indirapuram was recorded 46 on Tuesday which is very rare and falls into the "good" category of air quality, as per Central Pollution Control Board (CPCB) standards. Meanwhile, the air quality in Sanjay Nagar was 100 which is "satisfactory" as per the pollution board norms.
However, a day after, the air quality deteriorated by 2.5 times on Wednesday. The AQI in Indirapuram was 213, whereas, in Sanjay Nagar, it stood at 253 and 257 in Vasundhara, falling under the "poor" category as per CPCB.
An AQI reading between 0 and 50 is considered “good”, 51 and 100 “satisfactory”, 101 and 200 “moderate”, 201 and 300 “poor”, 301 and 400 “very poor”, and 401 and 500 “severe”.