Mongolia's air quality becomes 5 times worse than Beijing's
Mongolia's air quality has become five times worse than that of Beijing, which recently faced its worst smog of the year. Mongolia's air had almost 80 times the recommended fine particulate matter (PM 2.5) limit set by the WHO. According to government data, PM 2.5 levels peaked at 1,985 micrograms per cubic meter in Mongolia's Bayankhoshuu district on December 16.