The Department of Environment and Natural Resources–Environmental Management Bureau 11 (DENR-EMB 11) continues to monitor air quality across Davao Region following elevated levels of fine particulate matter (PM2.5) recorded in some areas amid haze affecting parts of the country.
The haze has been linked to forest and peatland fires in Indonesia’s Kalimantan region, with smoke being carried toward the Philippines by winds associated with the southwest monsoon, or habagat.
Smoke from the fires crossed the equator and reached parts of Luzon, the Visayas, and Mindanao, resulting in deteriorating air quality in several areas.
According to DENR-EMB 11, air quality monitoring conducted from August 26 to September 1 showed generally acceptable conditions in Malita, Digos, and Calinan, although some stations recorded elevated PM2.5 levels.
PM2.5 refers to fine particles measuring 2.5 micrometers or smaller in diameter. These particles can penetrate deep into the respiratory system and may pose health risks when present at elevated concentrations, particularly among vulnerable groups.
The Malita monitoring station consistently recorded Good air quality, with PM10 and PM2.5 concentrations remaining within prescribed air-quality standards.
Digos and Calinan, meanwhile, recorded Fair air quality, with occasional readings reaching the Unhealthy for Sensitive Groups category due largely to elevated PM2.5 concentrations.
DENR-EMB 11 said the elevated readings were associated with episodes of transboundary haze believed to have originated from neighboring countries.
“While most monitoring stations report air quality within acceptable ranges, the presence of haze has led to localized increases in PM2.5. We urge sensitive groups to exercise caution and encourage the public to stay informed through official advisories,” DENR-EMB 11 Regional Director Alnulfo Alvarez said.
The bureau said residents may continue normal outdoor activities when air quality is classified as Good or Fair. However, children, older adults, and individuals with respiratory conditions are advised to limit prolonged outdoor exposure when air quality reaches the Unhealthy for Sensitive Groups level.
DENR-EMB 11 urged residents to remain vigilant as haze conditions may continue to cause fluctuations in air quality, particularly in areas recording elevated PM2.5 levels.
The bureau said it will continue monitoring air quality through its stations across the region and will issue updates should conditions change.
