Which has higher exposure to outdoor air pollution, Iraq or Nigeria?

Nigeria, at 50 µg/m³ against 48.8 µg/m³ in Iraq as of 2024.

What is the difference in exposure to outdoor air pollution between Iraq and Nigeria?

1.2 µg/m³, with Nigeria ahead.

How many years of comparable data are there for Iraq and Nigeria?

27 years are reported by both, from 1998 to 2024.

Where does this data come from?

SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data, published as Exposure to outdoor air pollution. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Iraq vs Nigeria: Exposure to outdoor air pollution

Iraq

48.8 µg/m³

in 2024

Nigeria

50 µg/m³

in 2024

Iraq rank

9th

Nigeria rank

8th

Exposure to outdoor air pollution over time

Iraq
Nigeria

How they compare

Nigeria currently reports 50 µg/m³ against 48.8 µg/m³ in Iraq, a difference of 1.2 µg/m³.

The two have swapped places 8 times across 27 shared years of data; in 1998 it was Nigeria ahead.

Iraq ranks 9th and Nigeria ranks 8th of 241 countries.

Nigeria has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Iraq	Nigeria	Difference	Ahead
1990s	38.2 µg/m³	47.4 µg/m³	9.2 µg/m³	Nigeria
2000s	46.34 µg/m³	53.05 µg/m³	6.71 µg/m³	Nigeria
2010s	48.98 µg/m³	51.67 µg/m³	2.69 µg/m³	Nigeria
2020s	49.1 µg/m³	52.04 µg/m³	2.94 µg/m³	Nigeria

Averages of every year both report within each decade.

Frequently asked questions

Which has higher exposure to outdoor air pollution, Iraq or Nigeria?: Nigeria, at 50 µg/m³ against 48.8 µg/m³ in Iraq as of 2024.
What is the difference in exposure to outdoor air pollution between Iraq and Nigeria?: 1.2 µg/m³, with Nigeria ahead.
How many years of comparable data are there for Iraq and Nigeria?: 27 years are reported by both, from 1998 to 2024.
How do Iraq and Nigeria rank globally for exposure to outdoor air pollution?: Iraq ranks 9th and Nigeria ranks 8th of 241 countries.
Where does this data come from?: SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data, published as Exposure to outdoor air pollution. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iraq vs Nigeria: Exposure to outdoor air pollution. Statizoid, drawing on SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data. Retrieved 22 September 2026, from https://environment.statizoid.com/compare/outdoor-air-pollution-exposure/iraq/nigeria/

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About this data

Indicator: Exposure to outdoor air pollution
Unit: µg/m³
Source: SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 241 places, 6,507 data points, 1998–2024
Last refreshed: 18 September 2026

Annual population-weighted average concentration of fine particulate matter (PM2.5) in the air, measured in micrograms per cubic meter (µg/m³). Fine particulate matter (PM2.5) are particles with a diameter of 2.5 micrometers or less, which can pose significant health risks.