Background: Previous studies have reported adverse effects of fine particulate on lung function. However, there has not been much research conducted in the construction industry area. Objective: The study was to determine the relationship between exposure of ambient PM2.5 concentrations to lung function disorders in the ready-mix industry area. Material & Method: The research used a cross-sectional study on sample size of 100 respondents. It was divided into two regions which were determined based on the dominant wind direction. Ambient PM2.5 concentration was measured using gravimetric method, and pulmonary function used a portable spirometry. Results: PM2.5 concentration was obtained above the average of NAAQS provision (0.041 mg/m3). There was no significant association between lung function disorder and the average PM2.5 concentration both site A (p=0.583) and B (p=0.321), but from smoking behavior, there was a significant association with lung function disorder. This study found no evidence to suggest that living in the area of ready-mix industry is a major determinant of lung function disorder. Further research is needed to see early indications of health effect using other chemical methods and parameters. © 2018, Indian Journal of Public Health Research and Development. All rights reserved.