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Abasolo, nestled within the state of Guanajuato, Mexico, occupies a geographically significant position within the Bajío region, a fertile and historically vital agricultural heartland. Located at approximately 20.45° N, 101.52° W and an elevation of around 1,850 meters (6,070 feet) above sea level, the city experiences a high-altitude plateau climate. The surrounding landscape is characterized by rolling hills and expansive agricultural fields, primarily dedicated to maize, wheat, and agave cultivation – a key ingredient in tequila production, a significant regional industry. This proximity to agricultural zones introduces potential sources of particulate matter, particularly during planting and harvesting seasons, as well as from the use of fertilizers and pesticides. To the west, the Sierra Madre Oriental mountain range provides a partial barrier, influencing prevailing wind patterns and potentially trapping pollutants under certain meteorological conditions. The urban fabric of Abasolo is relatively compact, exhibiting a gradual urban-rural gradient as one moves outwards. While the city itself is primarily residential and commercial, the surrounding areas are overwhelmingly rural, with small farming communities and extensive agricultural land. The lack of major rivers or lakes within immediate proximity limits natural air purification processes. The Bajío region's rapid industrial growth, concentrated in nearby cities like León and Celaya, also contributes to regional air pollution, with some of these emissions potentially impacting Abasolo’s air quality, especially during periods of stagnant air.

Abasolo’s air quality follows a distinct seasonal pattern dictated by its climate and regional activities. The dry season, typically spanning from November to April, often presents the greatest air quality challenges. Reduced rainfall and lower humidity contribute to the formation of temperature inversions, where a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing. Agricultural burning, a common practice for land clearing and crop residue disposal, intensifies during this period, releasing significant amounts of particulate matter and other pollutants. February and March are often the months with the most noticeable impact. Conversely, the wet season, from May to October, brings increased rainfall and higher humidity, which naturally cleanse the atmosphere and facilitate pollutant dispersion. However, periods of intense rainfall can also lead to flooding and the release of mold spores, impacting indoor air quality. The summer months (June-August) can experience periods of intense heat, which can exacerbate respiratory issues. Wind patterns, often influenced by the Sierra Madre Oriental, play a crucial role; consistent winds generally improve air quality, while stagnant air conditions worsen it. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, limiting outdoor activities during peak pollution episodes and ensuring adequate ventilation indoors. During the wet season, focus should be on managing indoor mold and maintaining good hygiene.