"delhi-pollution"

On Sunday, a central government agency reported 1,230 farm fires in Delhi's neighbouring states -- the maximum in a day so far this season.

An AQI between 0 and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'.