Interpretation of data of Air Quality Index in different cities in India
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Answer:
Under the National Ambient Air Quality (NAQM) Monitoring program, air quality in the city of
Cochin is being regularly monitored by Central Pollution Control Board. Air quality management
programme requires reliable information of air quality collected, evaluated and analysed regularly.
This is of paramount importance in protecting man and his environment from damaging exposure to
air pollution. The data for SPM, SO2 and NOx were collected at three sites representing residential,
commercial and industrial activity zones at all the sites. Based on this data, the Air Quality Index (AQI)
was calculated using Oak Ridge Air Quality Index (ORAQI). This is an indication of the total effect of
all the pollutants together. Calculations of AQI for different seasons and different activity zones are
done to examine the pollution level. In the present article an attempt is also made to study the change
in pollution status during the last decade using the monthly meanm