Source: AQI numbers from Environmental Protection Agency. Air Pollution Index is based on the incidence of airborne lead, NO2, particulate matter, carbon monoxide and ozone depletion.

Colombo, January 24 (Daily Mirror) - Air quality levels across most cities in Sri Lanka were reported to be good on yesterday Thursday, with moderate levels observed in Colombo, Jaffna ...

Issues with air quality are one thing we all have to deal ... In order to maximize the benefits they provide, one of the best places to put air purifiers is considered the bedroom.