Monsoon brings Delhi cleanest air in a year

The Air Quality Index (AQI) value for the capital was a 'satisfactory' 76 at 4 pm on June 28. It touched the 'satisfactory' level on Wednesday following heavy pre-monsoon showers. The last time Delhiites breathed air so clean was nine months ago. Depending on AQI values, air quality is classified as good, satisfactory, moderate, poor, very poor and severe