Delhi Air Pollution: How is AQI measured? Check here

Air Quality Index (AQI) is a number used to convey the quality of air by the government to the general public. Image Source : X

Indian AQI range is from 0-500: 0 being good and 500 being severe. Image Source : pti

The major pollutants include particulate matter (PM 10 and PM 2,5), sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, lead and ammonia. Image Source : pti

To calculate AQI, data for a minimum of three pollutants must be present, of which one should be either PM10 or PM2.5. Image Source : PTI

AQI's impact on health: 0-50 is considered good air quality, with minimal to no health impact. 51-100 -- Satisfactory, can cause breathing difficulty in sensitive groups. Image Source : PTI

101-200: Moderate, can cause breathing difficulty in children, elderly people and people suffering from heart disorders. Image Source : PTI

201-300: Poor air quality. It shows the health impact over long-term exposure. Image Source : PTI

301-400: Very poor air quality. Long-term exposure may cause respiratory illness. Image Source : PTI

401-500: Severely poor air quality. It can impact the health of normal as well as people with illness. Image Source : PTI

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