Spatial - Temporal Mapping of Ambient Air Pollutants (PM2.5, PM10 and CH4) in Minna Town, Niger State, Nigeria

The study analyses and mapped the spatio-temporal variation of ambient air pollution in Minna town. The spatio- temporal pattern of ambient air pollution level and identify air quality index in Minna town. Primary and secondary data were used. Portable handheld Aeroqual’s Series 500 was used to take readings in parts per million (ppm) for gaseous air pollutants (PM2.5, PM10 and CH4) across selected sampled locations. Geographical information system (GIS) was used to analyzed the data. The total variance explained pollution causal parameter was 63.1% and the key index identified was Green House Gases (GHGs). Concentration levels of PM10um particulate matter were recorded around Dutsin- Kura junction and Kure market (> 0.0078ppm), followed by Kasuwa gwari market. The least concentration was of PM10 NNPC Mega station, City gate. The PM2.5 concentration was observed to be higher in Kasuwan Gwari Market, Dutsinkura junction, City Gate Shango and Gbeganu Junction Bida road while the lowest concentration of PM2.5 was observed around College of Education locations like Kasuwan Gwari market, Dutsin kura junction, and Kure market recorded very high level (1084.61, 1086.72, and 1099.82 ppm) of CH4 respectively during dry seasons. The study conclude that. pollutants concentration varies over space and time in Minna town. The findings recommend clean energy for the inhabitants in order to reduce release of pollutants into the environment from their means of livelihood.