Cajamarca Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Cajamarca, Tolima, nestled within the central Colombian Andes at coordinates 4.4167, -75.5000, presents a unique geographic setting influencing its air quality. The city sits at an elevation of approximately 1,730 meters (5,676 feet), contributing to cooler temperatures and potential for temperature inversions. Cajamarca is cradled within a valley, surrounded by the rugged, forested slopes of the Cordillera Central. This mountainous terrain restricts air circulation, trapping pollutants emitted from local sources. The Magdalena River, Colombia’s principal river, flows relatively close, but doesn’t directly impact Cajamarca’s immediate microclimate. The surrounding landscape is predominantly agricultural, with coffee plantations and small-scale farming dominating the rural areas. This agricultural activity contributes to particulate matter through land preparation, harvesting, and the use of agricultural chemicals. The urban-rural gradient is relatively sharp; the city itself is compact, with a noticeable transition to agricultural lands immediately outside its boundaries. Limited heavy industry within Cajamarca itself means that the primary pollution sources are likely vehicular emissions, residential wood burning for cooking and heating, and dust from agricultural practices. The valley’s topography and limited wind exposure exacerbate the concentration of these pollutants, creating localised air quality challenges.

Cajamarca’s air quality follows a pattern dictated by Colombia’s bimodal rainfall regime, rather than traditional seasons. The drier periods, roughly from December to February and July to August, consistently exhibit poorer air quality. Reduced rainfall means less atmospheric cleansing, allowing pollutants to accumulate. During these months, agricultural burning increases as farmers prepare fields, contributing significantly to particulate matter. Temperature inversions, common in the valley during cooler, calmer nights, trap pollutants near ground level. The wetter seasons, from March to June and September to November, bring improved air quality. Increased rainfall effectively washes pollutants from the atmosphere, and higher humidity can suppress dust. However, even during the wet seasons, localised pollution from vehicular traffic and residential sources persists. Sensitive individuals – children, the elderly, and those with respiratory conditions – should be particularly cautious during the drier months, limiting strenuous outdoor activity. Fog, frequently occurring due to the elevation and humidity, can also exacerbate respiratory issues by trapping pollutants. Monitoring wind patterns is crucial; periods of calm wind will worsen air quality regardless of the season. Avoiding outdoor exercise near high-traffic areas during peak hours is advisable year-round.