The air quality index (AQI) crossed an alarming level of 200 in the twin cities of Rawalpindi and Islamabad on Friday. The ...
Residents in Delhi urged the administration to check on the alarming level of pollution in the national capital demanding ...
An AQI is considered 'poor' between ‘200 and 300’, 'very poor' at ‘301 and 400’, 'severe' at ‘401-450,' and 450 and above is ...
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