As major cities in North India, including Delhi and Lucknow, continued to choke due to worsening air pollution levels, Aizawl, Gangtok and Shillong breathed the country's cleanest air as their Air Quality Index was the lowest, according to data from the Central Pollution Control Board. The AQI in Aizawl today stood at 26, under the "good" category, offering residents a …
