The region of Sarajevo on Wednesday declared a state of alert, as the Bosnian capital once again ranked among the world's ...
A moderate level of air quality was reported in most cities across the country, according to the Sri Lanka Air Quality Index ...
Weather conditions are trapping smoke and other air pollutants near the ground where people breathe, officials said.
A moderate level of air quality was reported in most cities across the country, according to the Sri Lanka Air Quality Index (SL AQI). However, good air quality was observed in Kegalle ...