Air quality monitoring around Metro Manila in (1) National Printing Office along EDSA, (2) Philippine General Hospital along Taft Avenue, and (3) Metro Manila Development Authority Tapayan Pumping Station in Taytay, Rizal began in December 2012, as part of the 1 year monitoring plan to validate dispersion modeling results.
New Year monitoring around Metro Manila is on its 13th year. More than half of all the samples collected from nine sites in eleven years were “Hazardous to Health”. Measurements from regular air sampling shows that annual Total Suspended Particulate, Particulate Matter less than 10 microns (PM10), and PM2.5 levels in Manila Observatory have been below the National Ambient Air Quality Guideline Values (NAAQGV) of the Philippine National Clean Air Act. The PM2.5 guideline value will be lowered in 2016, more than half of total suspended particulates collected are in the fine fraction that is detrimental to health.based on the USEPA Air Quality Index for PM2.5.