India, Jan. 9 -- Mumbai saw a cooler morning on Thursday, as air quality stayed in the "moderate" range, with regulators stepping up action against construction-linked pollution sources across the metropolitan region.

According to the India Meteorological Department (IMD), minimum temperatures dipped to 16.9degC on Thursday, after hovering around 19degC on Wednesday.

At the Colaba observatory, the maximum temperature was recorded at 31.2degC, about 0.6degC above normal, while the minimum stood at 20.5degC, 0.9degC above normal. In Santacruz, the maximum temperature touched 32.1degC, 0.8degC above normal, while the minimum dropped to 16.4degC, 0.6degC below normal.

IMD officials said the temperature pattern is likely to remain steady ov...