According to the NBRO, one of the main causes of this problem is an influx of dust particles that are polluting Sri Lanka's air space due to strong winds coming from India.
On Thursday, Colombo's air quality was 249 according to the US Air Quality Index (AQI) (Dec. 08).
Kurunegala had an AQI value of 291, Jaffna of 280, Vavuniya of 251, and Kandy of 214. A warning has also been issued for Puttalam and Hambantota after it was determined that the air quality is deteriorating further.
According to the NBRO, numerous locations of Sri Lanka had air quality readings between 150 and 200, which is considered harmful.
A temporary ban on construction and demolition activities in Delhi was announced earlier on Sunday by the Commission for Air Quality Management (CAQM) of India, a Union Government panel that makes recommendations for measures to control air pollution in its national capital, New Delhi, according to NDTV.