Dagohoy, Bohol, nestled in the central Philippines, occupies a geographically significant position within the island’s rugged interior. Located at approximately 9.92° N, 124.28° E, the municipality sits at an elevation that varies considerably, rising from coastal plains to the foothills of the island’s central mountain range. This terrain, characterized by undulating hills and valleys, influences local air circulation patterns. The surrounding landscape is predominantly rural, a patchwork of rice paddies, coconut plantations, and small-scale farms, typical of Bohol’s agricultural economy. Dagohoy’s proximity to the Bohol Sea, while providing a coastal breeze, also means it can be susceptible to maritime influences, including salt spray and occasional haze from distant shipping activity. The urban character of Dagohoy is distinctly rural; it’s a small municipality with limited industrial activity, primarily focused on agriculture and small-scale commerce. There are no major industrial belts nearby, though the wider Bohol province sees some limestone quarrying and small-scale processing of agricultural products. The urban-rural gradient is sharp, with the municipality transitioning rapidly into agricultural land. The prevailing winds, generally easterly, are modified by the island’s topography, creating localized variations in air flow. This complex interplay of elevation, surrounding agricultural land, and coastal proximity contributes to a unique microclimate that can impact air quality, particularly concerning particulate matter from agricultural burning and dust from unpaved roads. The lack of significant industry, however, generally mitigates against severe industrial pollution.

Dagohoy’s tropical climate dictates a wet and dry season, rather than the four seasons experienced in temperate regions. The dry season, typically spanning from March to May, often sees a noticeable increase in particulate matter. This is largely attributable to agricultural practices; farmers clearing land for planting frequently employ slash-and-burn techniques, releasing significant amounts of smoke and ash into the atmosphere. The drier conditions also exacerbate dust from unpaved roads, further contributing to elevated particulate levels. During the wet season (June to November), monsoon rains flush the atmosphere, significantly reducing air pollution. Frequent rainfall acts as a natural scrubber, removing particulate matter and gaseous pollutants. However, periods of prolonged rainfall can lead to localized flooding, which can stir up sediment and temporarily degrade air quality. Fog, particularly during the transitional months (November/December and March/April), can trap pollutants near the ground, creating stagnant air conditions. Temperature inversions, though less frequent than in cooler climates, can occasionally occur, trapping pollutants in the lower atmosphere. The months of April and May are generally the least favourable for outdoor activities, particularly for individuals with respiratory sensitivities. During these months, it’s advisable to limit strenuous outdoor exercise and consider wearing a mask, especially during periods of agricultural burning. The wet season offers a respite, with improved air quality and reduced health risks. Sensitive groups, including children, the elderly, and those with pre-existing respiratory conditions, should monitor local conditions and take precautions during the dry season’s peak pollution periods.