Smog returns to choke Delhi-NCR, air quality back in 'severe' category

On Thursday, a CPCB-led task force asked all agencies in Delhi-NCR to remain on high alert and to take stringent measures to control air pollution

Delhi’s air quality was “severe” on Friday—a pollution level that’s dangerous for people with respiratory ailment and hurts healthy individuals too.
 

The detoriation in air quality is being atributed to slow wind speed and falling temperatures. Delhi registering the season's lowest minimum temperature at 7.6 degrees Celsius on Thursday.

The overall air quality index (AQI) in the national capital read 411 at 6 am, while in Ghaziabad and Noida, it was 420 and 425, respectively.

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'. An AQI above 500 falls in