Question: which city has the most air pollution in the world
Answer: 5 Year PM10 PM10 Year Iran Zabol 217 2012 527 2012 India Gwalior 176 2012 329 2012 India Allahabad 170 2012 317 2012 Saudi Arabia Riyadh 156 2014 368 2014 Saudi Arabia Al Jubail 152 2014 359 2014 6 India Patna 149 2013 167 2012 7 India Raipur 144 2012 268 2012 8 Cameroon Bamenda 132 2012 141 2012 9 China Xingtai 128 2014 193 2014 10 China Baoding 126 2014 190 2014 11 India Delhi 122 2013 229 2012 12 India Ludhiana 122 2012 228 2012 13 China Shijiazhuang 121 2014 305 2013 14 Saudi Arabia Dammam 121 2014 286 2014 15 India Kanpur 115 2012 215