Singapore’s air quality worsened, reaching the higher end of the "unhealthy" range as wind carried smoke haze from forest fires in neighboring Indonesia.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/singapores-air-quality-worsens-amid-forest-fires-sumatra
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/bloomberg
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/singapore
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forest-fires
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indonesia