Manila, April 27 -- The Department of Environment and Natural Resources (DENR) is coordinating with the Office of the Solicitor General (OSG) for possible legal action against landfill operators as the agency intensifies efforts to control the Navotas landfill fire.

In an interview during the opening of the ASEAN Climate Week 2026 in Taguig City on Monday, Environment Secretary Juan Miguel Cuna said the DENR is mobilizing technical experts to address the ongoing fire that has also caused unhealthy air quality in parts of the National Capital Region (NCR) and nearby Bulacan province.

"As of yesterday, the air quality in NCR is mostly fair to good except for Valenzuela, a little above the National Guideline values of 35 micrograms per nor...