http://www.iaeme.com/IJMET/index.asp 1321 editor@iaeme.com International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 8, August 2018, pp. 1321–1328, Article ID: IJMET_09_08_141 Available online at http://www.iaeme.com/ijmet/issues.asp?JType=IJMET&VType=9&IType=8 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 © IAEME Publication Scopus Indexed FINE PARTICULATE MATTER-BASED AIR QUALITY INDEX: A CASE STUDY Winifred U. Anake Department of Chemistry, Covenant University, Km 10 Idiroko Road, Ota, Nigeria Kehinde D. Oyeyemi Department of Physics, Covenant University, Km 10 Idiroko Road, Ota, Nigeria Godson R. E. E. Ana Department of Environmental Health Sciences, University of Ibadan, Ibadan, Nigeria ABSTRACT The impact of air pollution on human health can be communicated through the application of air quality index (AQI). This has been underutilized in the developing countries due to inadequate technology. In this study, ambient fine particulate matter (PM 2.5 )-AQI in selected industrial areas in Ogun State, Nigeria was evaluated during weekends of wet season. PM 2.5 samples were collected on Teflon filters using Environtech gravimetric sampler. AQIs were further computed following the United States Environmental Protection Agency (US EPA) formulae. The result showed that for the major part of the wet season, the weekend air quality was categorized as “unhealthy” in all the industrial sites. An indication of possible adverse health concerns especially for the sensitive group. In addition, gradations of 0 to 50, representing the good AQI category was not observed. Therefore, synergy from Engineers, Scientist and Policy makers is required towards the availability of sensitive and low cost instruments. A permanent network of air quality monitoring stations and reporting system for on-time information on air pollutants should be established by the government. Also, a community project on greenbelts development programme is strongly recommended. Key words: Air quality index, Industrial area, Low cost instrument, Nigeria PM 2.5 pollution. Cite this Article: Winifred U. Anake, Kehinde D. Oyeyemi, Godson R.E.E. Ana, Fine Particulate Matter-Based Air Quality Index: A Case Study, International Journal of Mechanical Engineering and Technology 9(8), 2018, pp. 1321–1328. http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=9&IType=8 1. INTRODUCTION Unpolluted air is an important asset to living beings and the environment [1-2]. Air pollution occurs due to the introduction of chemicals, biological materials and particulate matter into