Which Indian cities recorded the worst air quality in the last 24 hours?

Motihari in Bihar (AQI 428) recorded the worst air quality ('severe') in India over the last 24 hours. Eighteen cities reported 'very poor' air quality with AQIs between 300 and 400 in Darbhanga, Bahadurgarh, Bhiwadi, Charkhi Dadri, Delhi, Durgapur, Faridabad, Ghaziabad and Gurugram. Hisar, Jind, Manesar, Meerut, Munger, Muzaffarpur, Noida, Patna and Singrauli also had 'very poor' AQIs.