As global air pollution levels rise, Nigeria appears to be the country most affected by the phenomenon.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nigerias-onitsha-city-worst-air-quality-globally
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/africa-news
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nigeria
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/saudi-arabia
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa