India, Oct. 16 -- Delhi's minimum temperature dropped to 17.7 degrees Celsius at the Ridge weather station on Friday morning, following rainfall across the capital a day earlier, while the city's air quality improved to the satisfactory category.

According to India Meteorological Department (IMD) data, the minimum temperature at Safdarjung, Delhi's base weather station, was recorded at 19.4 degrees Celsius at 8.30 am on Friday, 3.9 degrees Celsius lower than the previous day. The minimum temperature at Palam stood at 18 degrees Celsius, while Lodhi Road recorded 18.8 degrees Celsius and Ayanagar 18.5 degrees Celsius.

The Ridge station recorded the lowest minimum temperature among the five stations, at 17.7 degrees Celsius, a drop of 4.6...