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Tempoal de Sánchez, nestled in the state of Veracruz, Mexico, occupies a geographically significant position within the Huasteca Potosina region. Located at approximately 21.5167° latitude and -98.3833° longitude, the town sits at an elevation of roughly 350 meters above sea level, contributing to a moderate climate. The surrounding landscape is characterized by a blend of rolling hills, dense tropical forests, and agricultural lands, typical of the Gulf Coastal Plain. Tempoal’s proximity to the Pantepec mountain range to the west influences local weather patterns, often creating localized microclimates. The town is situated near the Río Antigua, a tributary of the Pánuco River basin, providing a vital water source and influencing humidity levels. The urban character is primarily rural, with a small, concentrated town center and a gradual transition to agricultural fields and forested areas. The region is a mix of small-scale agriculture, including maize, beans, and fruit cultivation, and some limited livestock farming. While not directly within a major industrial belt, Tempoal’s location within Veracruz places it within reach of industrial activity concentrated further along the coast, potentially impacting air quality through long-range transport of pollutants. The urban-rural gradient is relatively sharp, with the town acting as a service hub for the surrounding agricultural communities. Topography plays a role; valleys can trap pollutants, while higher elevations experience better dispersion. The prevailing winds, generally from the northeast, can carry pollutants from distant sources, impacting local air quality.

Tempoal de Sánchez experiences a tropical savanna climate, exhibiting distinct wet and dry seasons rather than the four traditional seasons. The dry season, typically from March to May, often sees a slight improvement in air quality due to increased wind speeds and reduced humidity. However, agricultural burning, a common practice for land clearing and crop residue disposal, can significantly elevate particulate matter concentrations during this period, particularly in April and May. The wet season, from June to October, brings frequent rainfall, which naturally helps to cleanse the atmosphere by removing airborne pollutants. However, periods of prolonged rainfall can lead to stagnant air and increased humidity, potentially trapping pollutants close to the ground. November to February represents a transitional period, with variable weather patterns. Fog, common during these months, can exacerbate air quality issues by trapping pollutants and reducing visibility. Temperature inversions, where cooler air is trapped beneath warmer air, are also more likely during this time, preventing vertical mixing and concentrating pollutants at ground level. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during agricultural burning periods and when fog or temperature inversions are present. Limiting outdoor exertion and monitoring for respiratory symptoms are advisable. The increased humidity during the wet season can also trigger mold growth, impacting indoor air quality and potentially exacerbating allergies. Overall, understanding these seasonal patterns is crucial for managing potential air quality risks and protecting public health.