Measurement of Particulate Matter Concentration and its Correlation with Meteorological Parameters in Kaduna Industrial Area

Background: Industrial emissions in Kaduna, North West Nigeria, are a primary source of airborne particulate matter that poses significant respiratory health risks. Understanding the relationship between particulate concentrations and meteorological conditions informs pollution management strategies. Aim: This study measured PM2.5 and PM10 concentrations in the Kaduna industrial area and correlated results with concurrent meteorological parameters. Methods: A DustTrak DRX aerosol monitor was used to measure PM2.5 and PM10 at 15 sites over a six-month period. Wind speed, wind direction, temperature, and relative humidity were recorded simultaneously. Pearson correlation and multiple linear regression were applied. Results: Mean PM2.5 and PM10 values were 54.2 and 112.8 micrograms per cubic metre respectively, both exceeding WHO ambient air quality guidelines. PM concentration was negatively correlated with wind speed (r = -0.68) and positively correlated with temperature (r = 0.54). Dry season values were significantly higher than wet season measurements. Conclusion: Industrial particulate pollution in Kaduna exceeds safe thresholds, particularly during the dry season. Regulatory enforcement of industrial emission standards, worker health surveillance, and continuous air quality monitoring are recommended. Keywords: particulate matter, PM2.5, air quality, Kaduna, industrial emissions.