Impact of Meteorological Factors on the Interaction between Green Vegetation, Urban Features and Air Quality Over Time in Kampala-Uganda
No Thumbnail Available
Date
2025-03-18
Journal Title
Journal ISSN
Volume Title
Publisher
East African Journal of Environment and Natural Resources
Abstract
The study aimed to analyze the influence of meteorological factors on the
interaction between green vegetated areas, urban features, and air quality over time
within Kampala city. Six (6) streets were sampled: - Nasser Lane, 6th Street,
Namirembe Road, Owino Kafumbe- Mukasa, Makindu Close, and Nakasero Lane.
From each street, samples were taken 3 times a day (Morning, Midday and
Afternoon) for 7 days. The sampling frequency of every spot was thus 21 times.
Makindu Close and Nakasero Lane are known for green vegetation, 6th Street is
known for buildings and industrial zones, while Namirembe Road and Owino
Kafumbe- Mukasa are known for car parks. A negative coefficient for humidity
indicated that higher humidity levels are associated with low PM2.5 concentrations.
The relationship between temperature and PM2.5 in the morning showed a slight
positive trend, suggesting that PM2.5 levels may increase slightly as temperatures
rise. Significant negative impact for several sites indicated that compared to the
reference site (6th Street Industrial Area), other sites had lower PM2.5 levels. Both
PM2.5 and PM10 levels had broader distributions in the morning and evening,
indicating more significant variability in particulate matter concentrations during
these times. CO levels were variable in the evening, with several sites showing
higher concentrations. NO2 levels showed variability across different times, with
the highest spread in the evening, indicating increased variability of nitrogen
dioxide concentrations during that period. Makindu Close Kololo showed relatively
stable levels across the day compared to other sites justifying the importance of
green vegetated areas in improving air quality by absorbing pollutants.
Description
Keywords
Biogenic Volatile Organic Compounds, Volatile Organic Compounds, Urban Heat Island Effects, Photochemical Reaction, Impervious Surfaces
Citation
Ddumba, J., Anahita, A., Katyal, S. & Shaban, K. S. (2025). Impact of Meteorological Factors on the Interaction between Green Vegetation, Urban Features and Air Quality Over Time in Kampala-Uganda. East African Journal of Environment and Natural Resources, 8(1), 121-133. https://doi.org/10.37284/eajenr.8.1.2783.