According to the Indian National Ambient Air Quality Standards, an Air Quality Index (AQI) value of 200 indicates the quality of air as

On the Indian air quality scale an index value of 200 falls at the top of the Moderate band that spans 101 to 200.

The Very Poor category covers the higher range of 301 to 400 with pronounced respiratory discomfort.

The Poor category runs from 201 to 300 and lies just above the value in question.

The Satisfactory category covers 51 to 100 with only minor breathing effects on sensitive people.

A Moderate reading may trouble people with asthma or lung and heart conditions.

The full scale climbs from Good through Satisfactory, Moderate, Poor, Very Poor to Severe.