MEASUREMENT OF PM2.5 AND SOME METEOROLOGICAL PARAMETERS IN OREDO LOCAL GOVERNMENT AREA, BENIN CITY.

ABSTRACT

Air Pollution (PM2.5) is identified as primary public health concern because of its harmful effects on human health and the environment. The study aimed to assess ambient air quality regarding PM2.5 and some meteorological parameters in Oredo Local Government Area, Benin City. Data collection spanned from November 2023 to February 2024, focusing on PM2.5 levels, temperature, and relative humidity. Purple Air sensors were deployed at EDOGIS and the Edo State Secretariat (Palm House) to collect air quality data. Analysis revealed significant variability in PM2.5 concentrations across locations and months, with Palm House exhibiting higher levels compared to EDOGIS, likely influenced by industrial activities and traffic congestion. Temperature remained relatively stable, while relative humidity showed variability, influencing PM2.5 levels through scavenging mechanisms. ANOVA results indicated temporal variability in PM2.5 concentrations, temperature, and humidity within locations. Comparisons with US EPA standards showed consistently elevated PM2.5 levels, emphasizing the need for intervention to mitigate emissions and safeguard public health. Recommendations included stricter emission controls, promoting sustainable transportation, increasing green spaces, enhancing monitoring networks, and public awareness initiatives. Additionally, planting trees in urban areas was suggested to reduce PM2.5 concentrations