From: Airtoday.ph, a public service of Rotary Club of Makati air monitoring team
January 1, 2019
Real-Time NYE air pollution levels at an all-time low but lingered longer
For the fourth straight year, the public service website www.airtoday.ph of the Rotary Club of Makati provided real-time air pollution warning on the levels of inhalable and respirable air due to the effects of fireworks in Metro Manila. The website is measuring both PM10 and PM2.5 in two locations this NYE: Ayala Avenue in Makati City and Lung Center of the Philippines (LCP) in Quezon City, both adjacent to designated community fireworks display sites (Ayala triangle and Quezon Memorial Circle, respectively).
As soon as the clock strikes midnight, both stations recorded “Very Poor” air pollution; with Ayala Avenue Makati Station recorded the highest PM concentration around 1:00 am January 1, 2019 with 114 micrograms per cubic meter of air (ug/m3) for PM10 and 113 ug/m3 for PM2.5, which was well above WHO’s 25 ug/m3 safe standard, but significantly lower (about 24% and 14%) compared to last years’ readings of 149 ug/m3 for PM10 and 131 ug/m3 for PM2.5 for the same station.
Warnings at Ayala Avenue, Makati station (Figure 1) recorded “Poor” air quality between December 31, 2018, 7:00 to 9:00 pm, and 11:00 pm, and then again from January 1, 2019, 4:00 am to 6:00 am.” Very Poor” air quality were recorded right after midnight from January 1, 2019, 12:00 am to 3:00 am.
Around the same time, the LCP station recorded a PM concentration of 99 ug/m3 for PM10 and 98 ug/m3 for PM2.5. Warnings at LCP (Figure 2) recorded “Poor” air quality from December 31, 2018, 5:00 pm to 7:00 pm, and 11:00 pm, and then again from January 1, 2019, 2:00 to 3:00 am. “Very Poor” air quality were recorded from December 31, 2018, 8:00 to 10:00 pm, and then again from January 1, 2019, 12:00 to 1:00 am.
PM concentrations at both stations were well above WHO safe standard but significantly decreased at around 4:00 am (January 1, 2019), albeit at the Ayala Avenue, Makati Station still maintaining a “Poor” air quality reading (same as last years’) which change to “Moderate” at around 7 am.
Air particulate matter (PM) are tiny dust that can be inhaled or respired, depending on the size of the pollutant. According to Dr. Mylene G. Cayetano, faculty at the Institute of Environmental Science and Meteorology, UP Diliman and technical expert of www.airtoday.ph, Tropical Depression Usman affected this NYE’s air quality in both positive and negative ways. The rain clouds brought about by Tropical Depression Usman washes away the particles emitted by fireworks and firecrackers. These same rain clouds (combined with colder temperature) prevents polluted air from dissipating farther upward, hence, trapping the particulates from the fireworks on the ground for more extended periods to be ingested into the respiratory system of people in Metro Manila.
Air PM levels for both airtoday.ph stations started to increase as early as 4:00-5:00 pm on December 31, 2018; with air quality index ranging from “Moderate” to “Very Poor”, earlier than previous 2 years which started at 11:00 pm for December 31, 2016 and 8:00 pm for December 31, 2017.
The www.airtoday.ph is a public service initiative by the Rotary Club of Makati since 2016. It aims to synergize actions from the stakeholders, both government and non-government, on mitigating the impacts of air pollution.
For more information on Airtoday.ph, Contact: Mr. Ron Dotaro, Chief of staff, Rotary Club of Makati.
telephone no:899-7863 to 65
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