Santa María Chiquimula Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

Santa María Chiquimula, nestled within the Totonicapán department of Guatemala, occupies a challenging geographical position in the western highlands. The city sits at an elevation of approximately 1,980 meters (6,496 feet), contributing to cooler temperatures and a complex atmospheric profile. Surrounded by steep, volcanic terrain characteristic of the Sierra Madre mountain range, Chiquimula’s valley location influences air circulation, often trapping pollutants during periods of atmospheric stability. The surrounding landscape is dominated by agricultural lands, primarily smallholder farms cultivating maize and coffee, alongside patches of pine and oak forests. While no major industrial belts are directly within the city limits, regional agricultural practices – including the burning of agricultural waste – contribute to particulate matter. The urban-rural gradient is relatively sharp; the city centre quickly transitions to rural farmland. Proximity to larger population centres like Totonicapán and Quetzaltenango also means the potential for regional pollutant transport. The terrain’s impact on wind patterns is significant, creating localized variations in air quality. The city’s position within a mountainous basin exacerbates the potential for temperature inversions, trapping pollutants near ground level and impacting respiratory health. Understanding these geographical factors is crucial for addressing air quality concerns in Santa María Chiquimula.

Santa María Chiquimula experiences a pronounced wet and dry season, dictating the annual air quality narrative. The dry season, typically from November to April, sees a significant increase in particulate matter. This is largely due to increased agricultural burning for land preparation, coupled with drier conditions that allow dust and soil erosion to contribute to PM10 levels. Wind speeds are generally lower during these months, reducing dispersion. February and March are often the months with the poorest air quality. The onset of the wet season (May-October) brings a temporary improvement. Rainfall effectively suppresses dust and washes pollutants from the atmosphere. However, increased cloud cover can also lead to temperature inversions, trapping moisture and pollutants. September and October, while wetter, can still experience localized pollution events due to continued agricultural activity. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during the dry season, particularly in February and March. During the wet season, monitoring for localized pollution events is still advisable. The cooler temperatures throughout the year generally reduce ozone formation, but particulate matter remains the primary concern.