The IQAir portal has consistently graded Sarajevo's air quality as "very unhealthy" or "hazardous" over the week, making the Bosnian capital the most polluted city in Europe.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
