The air quality in Delhi and the National Capital region (NCR) improved to ‘poor’ category on Wednesday with the overall Air Quality Index (AQI) showing 276 at 8:30 am, according to the System of Air Quality and Weather Forecasting And Research (SAFAR).
Major pollutants PM 2.5 was recorded at 238 and PM 10 at 141 in Lodhi road area at 8:32 am. The air quality around India gate area also remained in ‘Unhealthy’ category this morning.
However, the air quality at certain places remained in ‘severe’ or ‘very poor’ category. At Chandni Chowk, the SAFAR data showed the PM 2.5 at 399 and PM 10 at 449 which comes under ‘very poor’ and ‘severe’ categories, respectively. While, at IIT, PM 2.5 was at 302 and PM 10 at 150. In Delhi University area, PM 2.5 was at 302 and PM 10 at 173.
Data from the Noida observatory at 8.32 am showed the PM 2.5 level at 308(very poor) while PM 10(Moderate) was at 199, according to SAFAR.
According to the Central Pollution Control Board (CPCB), the prominent pollutants PM 2.5 was at 191 and PM 10 at 138 at Lodhi road around 8 am. While, at ITO, PM 2.5 was 210 and PM 10 was 126.
The air quality remained in poor category in other cities like Kolkata, Chennai and Bengaluru as well. The overall AQI in Kolkata was 267 with major pollutants PM 2.5 and PM 10 at 218 and 350 respectively. In Howrah, the overall AQI was 297 with PM 2.5 and PM 10 at 248 and 392, respectively.
On Tuesday, the air quality index in the national capital dropped from 365 at 9.45 am to 309 at 9 pm, according to the CPCB. A senior CPCB official said the apex anti-pollution body has been keeping a close watch on the farm fires in Punjab. The number of active fires in the fields of Punjab and Haryana hit the season’s high, with official records suggesting over 6,600 such incidents in a single day. This is more than twice the number of farm fires on Sunday, when the two states recorded roughly 2,900 farm fires.
According to Central pollution monitoring body SAFAR, even as the number of active fires climbed, the share of external biomass in Delhi’s PM2.5 levels, which was 25% on November 3, came down to 14% on November 4 and 12% on November 5.