Global & Disaster Medicine

Air Pollution: The top 20 worst cities

Guardian

20 worst cities overall
PM2.5 annual mean, micrograms per cubic metre
Zabol Iran 217
Gwalior India 176
Allahabad India 170
Riyadh Saudi Arabia 156
Al Jubail Saudi Arabia 152
Patna India 149
Raipur India 144
Bamenda Cameroon 132
Xingtai China 128
Baoding China 126
Delhi India 122
Ludhiana India 122
Dammam Saudi Arabia 121
Shijiazhuang China 121
Kanpur India 115
Khanna India 114
Firozabad India 113
Lucknow India 113
Handan China 112
Peshawar Pakistan 111

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