Air Pollution : To know degree of air pollution we should know what is Air Quality Index .
Air quality index will indicate degree of pollution higher the number
Higher is the pollution intensity.
0-50 Good
51-100 moderate
101-150. Unhealthy for sensitivity
151-200. Unhealthy
201-300. Very unhealthy
301-500 .Hazardous
The above number indicates different grades of pollution
You can load Air Quality Index App and no air pollution index
Of different cities of the world daily readings are available
This is just introduction of air pollution
Next articles you will know what harm is produced by air pollution
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