Introduction: In 2007 high levels of particulate matter of less than 10µm (PM10) were found in Bogotá (Colombia), creating the necessity of study health effects related with exposure to air pollutants; studies were extended to the entire city, resulting in a surveillance system since 2012, with the aim of continuous monitoring respiratory health effects associated with air pollution. The purpose of this study was to show the results of the surveillance system for the period 2012-2014 Methodology: Annual surveys adapted from the questionnaire of International Study of Asthma and Allergies in Childhood (ISAAC), with 4 components: demographic factors, medical history, occurrence respiratory symptoms, and household outdoor and indoor characteristics, were applied to families of children under 5 years of Bogotá during the period 2012-2014, according to different exposure areas to particulate matter in the city. There were performed binary logistic regressions for each year, with wheezing during the past year as dependent variable, and environmental, socioeconomic and demographic variables as independent variables. Results: nearly 5000 children per year participated. The prevalence ratios (and lC95%) of the independent variables included in the models for the outcome "wheezing during the past year" were: In 2012: Age 1.03 (1.02-1.04), low birth weight 1.96 (1.40-2.75), secondhand tobacco smoke 1.82 (1.32-1.89), house moisture 1.32 (1.01-1.74), and in-house factory 1.41 (1.02-1.96). 2013: secondhand tobacco smoke 1.78 (1.28-2.49) and proximity to heavy traffic 1.44 (1.03-2.00). 2014: exposure to PM10 1.39 (1.14-1.70), Age 1.03 (1.02-1.04) and house moisture 1.36 (1.08-1.70). Conclusions: the most important predictors for wheezing in children were age and in-house conditions (moisture and secondhand tobacco smoke), it shows the need for a policy of indoor air pollution in Bogotá. We continue with the surveillance system as support for public health decisions in the city.