Swachh Vayu Sarvekshan 2023: Madhya Pradesh's Indore tops clean air survey, Agra and Thane follow
India | Sep 07, 2023, 09:43 PM ISTSwachh Vayu Sarvekshan 2023: For their outstanding performance, the top three cities in each category are rewarded with cash prizes, trophies, and certificates every September 7.