Ongoing Studies and Air Quality Concerns in Cebu

Following the devastating flooding in Barangay Guadalupe during Typhoon Tino (Kalmaegi) in November 2025, the Mont Property Group claimed that their development, Monterrazas de Cebu, did not exacerbate the flooding, citing a study from the University of the Philippines Diliman Institute of Environmental Science & Meteorology (UPD IESM). However, Dr. Mayzonee Ligaray, head of the UP IESM’s Environmental Hydrology Laboratory, clarified that the study is not yet complete. While initial findings indicated that retention ponds at Monterrazas helped mitigate flooding, Ligaray emphasized that the assessment is preliminary and lacks comprehensive data on watershed dynamics.

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The UPD IESM's study, which utilized various hydrologic models and existing data, has not been funded and relies on available resources. Ligaray noted that the study is ongoing, with further assessments needed to fully understand the impact of the Monterrazas development on local watersheds. The laboratory's initial findings suggested that retention ponds reduced peak runoff significantly, but Ligaray acknowledged limitations due to the lack of on-site inspections and external data regarding the ponds' functionality.

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As of April 2026, Metro Cebu is grappling with hazardous air quality, exacerbated by stagnant weather conditions. The Department of Environment and Natural Resources-Environmental Management Bureau (DENR-EMB) reported that air pollutants have accumulated due to weak winds and high temperatures, resulting in a persistent haze over the metropolitan area. On April 19, the Air Quality Index (AQI) reached a "Very Unhealthy" level, prompting health warnings for sensitive groups, including children and those with respiratory conditions.

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DENR officials attributed the air quality issues primarily to vehicular emissions and construction activities. They have recommended measures such as banning the local practice of burning waste (daob) and promoting the use of electric vehicles to mitigate pollution. The local government has also taken steps to ensure public safety, including heightened alerts in hospitals for patients with respiratory illnesses.

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In response to the ongoing studies and air quality concerns, Mont Property Group stated that they provided site data for the UPD IESM study but emphasized that the study for the Guadalupe area is complete, while assessments for other areas continue. Meanwhile, the DENR has advised residents to stay indoors and wear protective masks when outdoors, highlighting the health risks associated with the current air quality.

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Critics, including actor Slater Young, have called for transparency and comprehensive answers regarding the flooding linked to Monterrazas de Cebu. Young emphasized the need for factual information rather than speculation, reflecting public concern over the environmental impacts of development in the area.

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There is a discrepancy regarding the completion status of the UPD IESM study, with Mont Property Group asserting that the assessment for the Guadalupe area is finished, while Dr. Ligaray maintains that it is still ongoing. Additionally, the effectiveness of the retention ponds remains under scrutiny, particularly following reports of structural failures during the typhoon.

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• “That tragedy was real and it deserves real answers. Not speculation, not misinformation,” — Slater Young, Actor

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• “It’s really about the management and the planning of the watershed itself.” — Dr. Mayzonee Ligaray, UPD IESM

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• “Always wear protective masks when going outdoors,” — Arthur Niño Calupig, DENR-EMB VII

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This ongoing situation in Cebu highlights the complexities of urban development and environmental management, necessitating continued research and public health vigilance.

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