Given the lockdown this year, Lucknow observed a major drop in the air pollution levels but as the relaxations have come into action, the city's AQI has again been labelled as 'very polluted' as of Wednesday evening. The air pollution level in Lucknow has crossed the 300-mark on the Air Quality Index, making it the third most polluted city in the country. A drop in average temperatures and occurrences of crop burning has additionally been contributing to this tally in the state. AQI in the non-attainment cities continues to remain in the 'poor', 'very poor' or severe categories for October. On Friday afternoon, the air quality has slightly improved and PM 2.5 level was at 119.