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Tatalon, a barangay nestled within Quezon City, Philippines, occupies a strategically important position within the sprawling Manila Metropolitan Region. Located at approximately 14.6242° N, 121.0153° E, its geography is characterized by a gently undulating terrain, transitioning from relatively flat residential areas to slightly elevated slopes towards the eastern periphery. The barangay sits within a predominantly urban landscape, bordered by densely populated residential zones and commercial districts, reflecting Quezon City’s overall urban character. While not directly adjacent to major bodies of water, Tatalon benefits from proximity to the Marikina River basin, influencing local microclimates and drainage patterns. The surrounding landscape is largely urban, with limited pockets of green space, primarily consisting of parks and smaller community gardens. The urban–rural gradient is sharp; Tatalon is firmly embedded within the continuous urban fabric of Metro Manila, with agricultural activity virtually absent within its immediate vicinity. Further afield, however, the gradual transition to agricultural lands in the eastern fringes of Rizal province can be observed. This urban density, coupled with the region's reliance on vehicular transport and industrial activity in surrounding areas like Caloocan and Valenzuela, significantly impacts air quality. The prevailing winds, often influenced by regional weather systems, play a crucial role in dispersing or concentrating pollutants within Tatalon and the wider Quezon City area. Topographically, the slight elevation changes can create localized areas of stagnant air, particularly during periods of low wind speed, exacerbating pollution episodes.

Tatalon’s air quality experiences a distinct seasonal pattern dictated by the Philippines’ tropical climate, characterized by wet and dry seasons rather than the four traditional seasons. The dry season, typically spanning from November to May, often witnesses a gradual increase in air pollution. Reduced rainfall during this period means fewer opportunities for atmospheric cleansing, allowing pollutants to accumulate. Temperature inversions, common during the cooler months (December-February), trap pollutants near the ground, leading to periods of poorer air quality. March and April, with rising temperatures and increased construction activity, frequently see elevated particulate matter levels. The onset of the wet season (June-October) brings a welcome respite. Frequent rainfall effectively washes pollutants from the atmosphere, significantly improving air quality. Monsoon rains, particularly during July and August, are especially effective at reducing airborne particles. However, heavy rainfall can also lead to localized flooding, which can temporarily release pollutants from inundated areas. Fog, while less frequent, can also trap pollutants, creating localized pockets of poor air quality. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of temperature inversions or increased construction. Limiting outdoor exertion during these times and utilizing air purifiers indoors can provide some relief. The transition months (May and November) often present unpredictable air quality conditions, requiring vigilance and awareness of local weather patterns.