The air quality index (AQI) crossed an alarming level of 200 in the twin cities of Rawalpindi and Islamabad on Friday. The ...

An AQI is considered 'poor' between ‘200 and 300’, 'very poor' at ‘301 and 400’, 'severe' at ‘401-450,' and 450 and above is ...

Among the 258 cities for which AQI numbers were available, over 20 percent grappled with AQI levels of 200 or 'poor' air ...

Delhi's air quality remains in the "severe" zone with an AQI of 409, prompting Grap-III restrictions, including a ban on ...