(Source: World Health Organization, WHO). WHO safe level It doubles the WHO safe level I doesn't comply the recomended by WHO Barely meets de level safe level It complies the WHO VANCOUVER µg/m 3 7 SYDNEY µg/m 3 8 SHANGAI µg/m 3 52 NEW YORK µg/m 3 9 NEW DELHI µg/m 3 122 MEXICO CITY µg/m 3 20 MADRID µg/m 3 10 STOCKHOLM µg/m 3 6 DAKAR µg/m 3 34 BARCELONA µg/m 3 15 3 Maximum of 10 µ g/m level: WHO-recomended particles in 2016 Annual average of PM2,5 in 10 Cities Pollution Air (Source: World Health Organization, WHO). WHO safe level It doubles the WHO safe level I doesn't comply the recomended by WHO Barely meets de level safe level It complies the WHO VANCOUVER µg/m 3 7 SYDNEY µg/m 3 8 SHANGAI µg/m 3 52 NEW YORK µg/m 3 9 NEW DELHI µg/m 3 122 MEXICO CITY µg/m 3 20 MADRID µg/m 3 10 STOCKHOLM µg/m 3 6 DAKAR µg/m 3 34 BARCELONA µg/m 3 15 WHO-recomended level:Maximum of 10 µ g/m3 Annual average ofPM2,5 particles in 2016 Air pollutionin 10 Cities