The air quality index explained: What air quality is bad?

With marginal improvement, Delhi air quality continues to be 'poor'

Delhi AQI Update: National Capital records 'severe' air quality; minimum temperature settles at 16.6 degrees Celsius

India: New Delhi's AQI stands at 445: Nov 13

SOLVED: 1.38 Air quality Daily air quality is measured by the air quality index (AQI) reported by the Environmental Protection Agency. This index reports the pollution level and what associated health effects might be a concern. The index is calculated for five major air pollutants regulated by the Clean Air Act and takes values from 0 to 300, where a higher value indicates lower air quality. AQI was reported for a sample of 91 days in 201 in Durham, NC. The relative frequency histogram below sh

Air pollution

Air Pollution Causes, Effects, and Solutions