A thick haze enveloped the city on Tuesday despite a high temperature in the day. As Mumbai’s air quality worsens, hazy conditions will dominate the city over the next couple of weeks, IMD officials said. The air quality index (AQI) of Mumbai rose from 225 on Monday to 272 on Tuesday. While Malad was the most-polluted locality on Monday, Andheri recorded to be worst on Tuesday.
AQI is recorded by System of Air Quality and Weather Forecasting and Research (SAFAR), which is run by the Indian Institute of Tropical Meteorology with the support of Indian Meteorological Department.
According to the SAFAR, in Andheri, the AQI worsened on Tuesday — rising to 311 from 246. Mazagoan, which also recorded “very poor” air recorded a sharp spike from 214 on Monday to 306 on Tuesday.
SAFAR officials claimed that low wind speed to have compounded the air quality levels in the city, especially the smaller particulate matters that are trapped in the city due to the weather conditions.
Meteorologists pointed out that the maximum temperature in the day has not dropped but the temperature at night which was falling last week have now begun to rise.
According to temperature recorded by the India Meteorological Department, at Santacruz, a maximum of 35.7 degree Celsius was recorded and the minimum was 19.2 degrees. Temperature recorded at Colaba showed the maximum at 34.8 degrees and the minimum at 22 degrees.
An IMD official said the minimum temperature recorded on Monday was 17 degrees. Relative humidity fluctuated between 81 per cent and 89 per cent. An IMD expert said high relative humidity was adding moisture to the air and aiding to the hazy conditions.
“In the morning, the calm winds and the low temperature make it a conducive condition, and the haze stays for a long time in the day,” said IMD’s Deputy Director K S Hosalikar. Till around 11 am on Tuesday, most of Mumbai’s skyline and the Bandra-Worli Sea Link were blanketed by a thick haze.
Hosalikar said the city has only been experiencing east-to-west winds and not winds from the north-east direction that could influence the temperature drastically. “Dust has triggered the hazy conditions, especially during sunrise and sunset. However, the visibility is not an issue for transport,” Hosalikar added.