Villahermosa Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

Villahermosa, the capital of Tabasco state in southeastern Mexico, occupies a strategic position in the humid tropical lowlands of the Gulf of Mexico coastal plain. Situated at just 10 meters above sea level, the city lies along the banks of the Grijalva River, which flows through its urban core before joining the Usumacinta River to form an extensive delta system that empties into the Gulf of Mexico approximately 80 kilometers to the north. This riverine geography creates a landscape of wetlands, lagoons, and seasonal floodplains that surround the city, most notably the Pantanos de Centla biosphere reserve to the northeast. The urban area itself sits on relatively flat terrain with minimal topographic relief, which significantly influences air quality by limiting natural ventilation and pollutant dispersion. Villahermosa functions as the commercial and administrative hub for Mexico's primary oil-producing region, with petroleum extraction and processing facilities concentrated in nearby municipalities like Paraíso and Cárdenas, creating an industrial belt that contributes to regional air pollution. The city exhibits a distinct urban-rural gradient, with dense commercial districts giving way to suburban neighborhoods that gradually transition into agricultural zones dominated by cattle ranching, tropical fruit cultivation, and increasingly, oil palm plantations. This geographic context creates a complex air quality dynamic where local urban emissions from transportation and construction interact with regional industrial pollutants and agricultural burning, all trapped by the area's low elevation and frequent atmospheric stability.

Villahermosa's air quality follows a distinct seasonal pattern shaped by its tropical monsoon climate, with pollution concentrations fluctuating according to rainfall intensity, wind patterns, and atmospheric stability. During the dry season from February through May, reduced precipitation allows pollutants to accumulate, particularly in March and April when temperatures peak around 35°C and light winds from the northeast prevail. These conditions frequently create temperature inversions that trap emissions from vehicles, construction, and occasional agricultural burning at ground level, making these months the least favorable for outdoor activities, especially for sensitive groups like children, elderly residents, and those with respiratory conditions. The rainy season from June through October brings dramatic improvement as daily afternoon thunderstorms and stronger southeasterly winds from the Caribbean effectively scrub the atmosphere, with September typically experiencing the cleanest air despite being the wettest month. However, high humidity during this period can combine with pollutants to create hazy conditions that may irritate airways. The transitional months of November through January see variable air quality as the dry season establishes itself, with cooler temperatures and moderate winds providing generally good dispersion except during occasional calm periods when fog forms overnight and traps morning emissions. Health guidance emphasizes monitoring local air quality reports year-round, with particular caution during late dry season when ozone and particulate matter typically peak, and adjusting outdoor exercise to early mornings when pollution levels are generally lowest.