What is the difference in exposure to outdoor air pollution in urban areas between Andorra and San Marino?

0.04 micrograms per cubic meter, with Andorra ahead.

How many years of comparable data are there for Andorra and San Marino?

14 years are reported by both, from 2010 to 2023.

Where does this data come from?

World Health Organization – processed by Our World in Data, published as Exposure to outdoor air pollution in urban areas. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Andorra vs San Marino: Exposure to outdoor air pollution in urban areas

Andorra

8.66 micrograms per cubic meter

in 2023

San Marino

8.62 micrograms per cubic meter

in 2023

Andorra rank

168th

San Marino rank

170th

Exposure to outdoor air pollution in urban areas over time

Andorra
San Marino

How they compare

Andorra currently reports 8.66 micrograms per cubic meter against 8.62 micrograms per cubic meter in San Marino, a difference of 0.04 micrograms per cubic meter.

Across all 14 years both countries report, Andorra has been ahead every year.

Andorra ranks 168th and San Marino ranks 170th of 226 countries.

Andorra has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Andorra	San Marino	Difference	Ahead
2010s	11.74 micrograms per cubic meter	11.23 micrograms per cubic meter	0.507 micrograms per cubic meter	Andorra
2020s	10.09 micrograms per cubic meter	8.94 micrograms per cubic meter	1.16 micrograms per cubic meter	Andorra

Averages of every year both report within each decade.

Frequently asked questions

Which has higher exposure to outdoor air pollution in urban areas, Andorra or San Marino?: Andorra, at 8.66 micrograms per cubic meter against 8.62 micrograms per cubic meter in San Marino as of 2023.
What is the difference in exposure to outdoor air pollution in urban areas between Andorra and San Marino?: 0.04 micrograms per cubic meter, with Andorra ahead.
How many years of comparable data are there for Andorra and San Marino?: 14 years are reported by both, from 2010 to 2023.
How do Andorra and San Marino rank globally for exposure to outdoor air pollution in urban areas?: Andorra ranks 168th and San Marino ranks 170th of 226 countries.
Where does this data come from?: World Health Organization – processed by Our World in Data, published as Exposure to outdoor air pollution in urban areas. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Andorra vs San Marino: Exposure to outdoor air pollution in urban areas. Statizoid, drawing on World Health Organization – processed by Our World in Data. Retrieved 10 September 2026, from https://environment.statizoid.com/compare/exposure-to-outdoor-air-pollution-in-urban-areas/andorra/san-marino/

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<a href="https://environment.statizoid.com/compare/exposure-to-outdoor-air-pollution-in-urban-areas/andorra/san-marino/">Andorra vs San Marino: Exposure to outdoor air pollution in urban areas</a> — Statizoid

About this data

Indicator: Exposure to outdoor air pollution in urban areas
Unit: micrograms per cubic meter
Source: World Health Organization – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 226 places, 3,156 data points, 2010–2023
Last refreshed: 28 August 2026

Annual mean levels of fine particulate matter (population-weighted), by location (micrograms per cubic meter).