The Delhi-NCR region continued to be covered by a layer of dust for the third day running, with pollution levels worse than severe on the air quality index.
An AQI between 0-50 is considered "Good", 51-100 "Satisfactory", 101-200 "Moderate", 201-300 "Poor", 301-400 "Very Poor", and 401-500 "Severe".
According to the CPCB, the air quality index - a measurement of the concentration of toxic particulate matter in the air - at several places in Delhi remained beyond the 500-mark, with east Delhi's Anand Vihar area recording a PM10 level of 929 and PM2.5 level of 301 this morning.
The dust currently hovering over the capital is being blamed on dust storms originating in Rajasthan. The dust makes the summer heat worse in Delhi because it stops warm air from escaping.