Institute of Geoscience and Space Technology Rivers State University Port Harcourt Nigeria;
Institute of Geoscience and Space Technology Rivers State University Port Harcourt Nigeria;
Department of Geography and Environmental Management Rivers State University Port Harcourt Nigeria;
Department of Geography and Environmental Management Rivers State University Port Harcourt Nigeria;
Air Quality Index; Air Pollution; COVID-19 Pandemic; Lockdown; Port Harcourt;