Modeling Particulate Matter Dispersion in Metro Manila

More than ten years after the Clean Air Act (RA 8749), the level of air pollution in Metro Manila continues to affect the health of its over 10 million residents. The situation of Metro Manila is not unique. The majority of people living in Asian cities in developing countries are exposed to unhealthy levels of air pollution. A CAI-Asia survey of ambient air quality levels reported for 2009 from 234 cities in developing Asian countries, shows that only 1% of these cities meets the World Health Organization (WHO) PM10 guideline (20µg/m3) and 64% could not even meet the most lenient WHO air quality interim target 1 (70µg/m3). By comparison, of the 58 cities from developed Asian countries (Japan, Korea and Singapore), 5% comply with the WHO air quality guideline and 100% of the cities are within the WHO air quality interim target 1.

The objective of this project is to strengthen air quality management of Metro Manila by improving the scientific and technical understanding of air pollution pathways in Metro Manila and enhance the capacity of air quality stakeholders through collaborative air quality studies.
Specific Objectives

  • Improve the understanding of particulate matter (PM) pathway in Metro Manila through an updated dispersion map and improved emissions inventory for mobile, stationary and area sources, validated by monitoring and source apportionment data, and
  • Work with stakeholders including government agencies and universities to ensure their continued active engagement in air quality management in Metro Manila.

Funding Organization: Pilipinas Shell

Duration: September 2012 – August 2014


  • Kaibigan ng Kaunlaran at Kalikasan
  • Manila Observatory
  • De La Salle University
  • Ateneo de Manila University

Glynda Bathan,
Kaye Patdu,