September 13 , 2023
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	- The survey was conducted by the Central Pollution Control Board.
 
	- In cities with over one million population, Indore secured the first rank followed by Agra and Thane. 
 
	- Madurai, Howrah and Jamshedpur ranked in bottom 46, 45 and 44, respectively. 
 
	- Bhopal stood fifth while Delhi took the ninth spot.
 
	- In the second category, with a population between 300,000 to one million, Amravati secured the first rank followed by Moradabad and Guntur.
 
	- Jammu, Guwahati and Jalandhar ranked 38, 37 and 36, respectively.
 
	- For the third category, with a population of less than 300,000, Parwanoo in Himachal Pradesh secured the first rank followed by Kala Amb and Angul.
 
	- Kohima was ranked last – 39.
 

                                 
                            
                                
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