UP expert: Metro Manila air quality remains good amid Taal ashfall

A University of the Philippines (UP) expert stated that Metro Manila's air quality remained from considerably low to moderate, despite ashfall from the Taal Volcano eruption spreading to various regions.

Dr. Gerry Bagtasa of UP's Institute of Environmental Studies and Meteorology reported that particulate matter reached a 'moderate' level of 60 micrograms per cubic meter on Sunday evening, improving to 'good' levels by Monday morning.

He clarified that much of the ash from the volcanic plumes did not descend to the surface in Metro Manila, with one equipment in Quezon City indicating ashfall stopped at 3 km.

The Manila Observatory reported that Metro Manila's air quality had returned to normal as of Monday, January 13, with integrated aerosol optical depth (AOD) back to its typical range.

While consumers may have unnecessarily panicked about needing N95 masks, Bagtasa advised that individuals with pre-existing respiratory conditions, children, and the elderly should still consider wearing masks due to usual daily pollution.

The Manila Observatory noted that AOD in Quezon City was 4 times higher than normal during the height of the ashfall on Sunday night, signifying extremely hazy conditions.

Satellite images show decreased emissions from Taal Volcano and prevailing winds are blowing any residual emissions northeast, away from Metro Manila.