Completed · Geospatial
Air quality across Nigeria, mapped.
A national atlas of methane, nitrogen dioxide and fine particulate matter, mapped below state level and paired across years so change is visible at a glance.
A national atlas of methane, nitrogen dioxide and fine particulate matter, mapped below state level and paired across years so change is visible at a glance.
A national atlas of atmospheric pollutants (methane, nitrogen dioxide and fine particulate matter) resolved below state level and paired across years so change is visible at a glance.
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Baseline national methane surface. Concentrations climb out of the humid south (the Niger Delta and the south-west hold the lowest readings) into a broad elevated band across the middle belt and north-east, peaking through Nassarawa, Benue, Taraba, Gombe and Borno.
1,783 – 1,959 ppbThe same surface five years on. Every class break shifts upward: the national ceiling rises from 1,959 to 2,007 ppb and the mid-range band moves roughly 30 ppb higher, with the elevated zone thickening across Niger, Kogi, Nassarawa and Kaduna.
1,756 – 2,007 ppbTropospheric nitrogen dioxide traces combustion directly, so this reads as a map of economic activity: sharp maxima over the Lagos–Ogun conurbation, Abuja, Kano and the Port Harcourt oil corridor, set against a near-clean Sahel background.
7.49 – 63.87 ppbBy 2025 the hotspots hold position but the moderate band spreads: the 16–21 ppb class now covers most of the middle belt and south-east rather than isolated corridors, and the national maximum climbs to 67 ppb.
7.64 – 67.02 ppbFine particulate matter follows the harmattan dust regime rather than the cities: a pronounced maximum across Katsina, Kano, Jigawa, Bauchi and northern Kaduna, falling steadily southward to the cleanest air along the coast and in the south-east.
2.57 – 10.09 µg/m³Two years later the northern maximum is both higher and wider: the top class rises from 10.09 to 11.78 µg/m³ and covers a contiguous block from Katsina through Kano and Jigawa into Bauchi, while the low-concentration southern zone pushes further north.
1.56 – 11.78 µg/m³We'll share relevant experience and outline how we'd approach your work.
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