Raipur: While India ranks second among 252 countries in terms of pollution, Chhattisgarh has also been included in the five most polluted states of the country. According to the Air Quality Index report, Chhattisgarh ranks second after Delhi, UP, Bihar, Haryana. At the same time, the air quality in many districts of the state has reached dangerous levels. The situation of Durg and Raipur districts is the worst. In the state, the AQI of Durg is 63.52, AQI of Raipur is 63.45, AQI of Bemetara is 61.41 respectively. The AQI of Bilaspur is 50.46, AQI of Korba is 41.59.