“…In the last two decades, with worsening air quality in Ulaanbaatar, interest in addressing air pollution has been increased. A number of research works has been performed on the assessment of the ambient air quality by evaluating criteria (Luvsan et al, 2012;Huang et al, 2013) and trace (Byambaa et al, 2019;Nirmalkar et al, 2020) pollutants in Mongolia, chemical (Jung et al, 2010;Davy et al, 2011;Nishikawa et al, 2011;Batmunkh et al, 2013;Amgalan et al, 2016) and physical characteristics (Jung et al, 2011;Oyungerel et al, 2012;Hasenkopf et al, 2016) of atmospheric particulate matter, source apportionment of certain atmospheric pollutants (Davy et al, 2011;Nishikawa et al, 2011;Amgalan et al, 2016) and other climatic and socioeconomic factors impacting urban air quality (Luvsan et al, 2012;Ganbat et al, 2013;Huang et al, 2013;Ganbat and Baik, 2016). To date, there have been no systematic reviews of published studies on air pollution in Mongolia.…”