Compound Environmental Risks: The Thermodynamic and Meteorological Drivers of Air Quality Variability in Sierra Leone - A Spatiotemporal and Mechanistic Study

This dataset contains a harmonized, area-weighted panel of monthly environmental and air quality parameters across all 16 districts of Sierra Leone. It was generated to investigate the thermodynamic and meteorological drivers of air-quality variability, focusing on the distinct “Dust-Combustion” (Harmattan) and “Wet-Photochemical” (Monsoon) regimes. The dataset covers November 2019 through November 2025 (83 months), yielding a balanced panel of 1,328 observations (16 districts × 83 months).