Air quality levels in Colombo down from 150 to 60

COLOMBO (News 1st):- The National Building Research Organization (NBRO) said that the air quality level in and around Colombo has decreased once again. Senior Scientist Sarath Premasiri states that the air quality index has has come down from 150 to 60.

Air quality levels in Colombo down from 150 to 60

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