Quezon Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Quezon, Isabela, nestled in the heart of the Cagayan Valley region of the Philippines, occupies a geographically significant position within a predominantly agricultural landscape. Located at approximately 17.31°N, 121.60°E, the city sits at a modest elevation of around 175 meters above sea level, contributing to a relatively mild climate. The surrounding terrain is characterized by fertile alluvial plains, a direct result of the Magat River’s influence, which flows nearby and provides crucial irrigation for the extensive rice paddies and cornfields that dominate the regional economy. This proximity to intensive agricultural zones is a key factor influencing local air quality, with seasonal burning practices for land clearing potentially contributing to particulate matter. Quezon’s urban character is that of a rapidly developing municipality, transitioning from a rural agricultural hub to a regional commercial center. The urban–rural gradient is gradual, with agricultural land seamlessly blending into residential and commercial areas. The city’s location, far removed from major industrial belts, mitigates some pollution risks, but the increasing vehicular traffic and small-scale industries within Quezon itself are emerging concerns. The prevailing winds, generally easterly, play a role in dispersing pollutants, though localized topography can sometimes trap them. The presence of the Magat River also influences humidity levels, which can affect the dispersion of certain pollutants and contribute to fog formation under specific meteorological conditions.

Quezon’s tropical climate dictates a distinct wet and dry season, profoundly impacting its air quality profile. The dry season, typically spanning from November to May, often sees a slight increase in particulate matter concentrations. This is largely attributable to agricultural practices; farmers frequently employ controlled burning to clear fields for the next planting season, releasing smoke and soot into the atmosphere. While regulations exist, enforcement can be challenging, and these practices contribute to localized air quality degradation. The wet season, from June to October, brings monsoon rains and significantly higher humidity. These conditions generally lead to improved air quality as rainfall effectively washes away particulate matter and dilutes gaseous pollutants. However, periods of prolonged rainfall can also lead to stagnant air and localized fog, which can trap pollutants near the ground, particularly in low-lying areas. Temperature inversions, though less frequent than in temperate climates, can occasionally occur during the cooler months (December-February), trapping pollutants closer to the surface. During the transition months (May and November), wind patterns are often variable, leading to unpredictable air quality fluctuations. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of agricultural burning. Limiting outdoor activities during these times and wearing masks can help mitigate exposure. The increased humidity during the wet season can exacerbate respiratory issues for some, so maintaining indoor air quality is also important.