One of the most critical threats to the air quality of Metro Manila is particulate pollution emitted by mobile and stationery sources in the city. Constant inhalation of particulate matter inevitably impairs the lung function of children and old people,iving rise to cardio-pulmonary diseases and heightened morbidity rates. Ambient air measurements were conducted at various points in the metropolis on a weekly basis for an entire year. These observed values are the basis for a modeling study.
