Dr. Azhar Siddique has more than 20  years’  experience in the field of evaluation of environmental stressors affecting receptor ecology through contaminant exposure in urban areas of developing countries. Additionally, he has comprehensive experience in supervising and conducting ambient air quality monitoring, managing projects, setting goals, and interpreting  data for regulation/abetment purposes. 

In the early stages of his career, he  dealt mostly with biophysical interactions in aquatic systems. Later, his work shifted towards the current air quality studies of fine particulate matter (PM2.5) and associated health risks in urban areas of the Middle East region. His work has been associated with similar studies in Pakistan and the USA, partners with the US National Academy of Sciences. 

Additionally, he had conducted studies on non-methane hydrocarbons (VOCs) profiling during the holy pilgrimage in western Saudi Arabia with the University of California, Irvine.

Over the years, his training as a laboratory-based chemistry graduate shifted more towards field-based environmental studies involving an interdisciplinary perspective of health and well-being. This was drawn from a variety of academic areas, including epidemiology, hazard identification, risk assessment, management and communication, which are critical subfields of public health.