Mumbai needs woollens: Temperature dips to season’s lowest, but pollution levels low
The weather bureau attributed the drop in temperatures to cool winds from the northmumbai Updated: Dec 14, 2017 13:30 IST
The city woke up to this season’s coldest morning so far on Wednesday as the minimum temperature dropped to 17.3 degrees Celsius. The dip in mercury, however, did not affect the pollution levels in the city as Air Quality Index (AQI), the pollutant measuring indicator, remained in the ‘satisfactory’ category.
Minimum temperatures in both the suburbs and in south Mumbai were below normal, with the Santacruz observatory recording 17.3 degrees Celsius and Colaba recording 19.5 degrees Celsius.
The weather bureau attributed the drop in temperatures to cool winds from the north. “It is a seasonal phenomenon and temperatures are expected to fall further over the coming days. As a result of snowfall over the northern parts of the country, cool northerly winds have brought down temperatures in Mumbai,” said Ajay Kumar, scientist, India Meteorological Department (IMD).
Meanwhile, AQI fell from 240 (poor) recorded on Sunday to 154 (moderate) on Monday and 98 (satisfactory) on Wednesday. AQI level between 0 and 50 is good; 51-100 is satisfactory; 101-200 is moderate; 201-300 is poor; and 301-400 is very poor.
The System of Air Quality Weather Forecasting and Research (SAFAR) estimated pollution levels to further decline on Thursday, as they predicted an AQI of 74 (satisfactory).
Of the 10 locations where AQI is monitored, Navi Mumbai was the most polluted on Wednesday with an AQI of 196 (moderate), followed by Bandra-Kurla Complex (172) and Mazagaon (123). Worli recorded the cleanest air with an AQI of 47 (good).
The weather bureau said rise in wind speed and drop in humidity allowed fast dispersion of pollutants from the city’s air and increased visibility levels to over 10,000 metres. Humidity levels were 61% in Colaba and 53% in Santacruz. A clear sky has been predicted for Thursday with day and night temperature expected at 28 degrees Celsius and 17 degrees Celsius.