In 2022, La Puebla de Alfindén was Spain's most polluted city based on PM2.5 emissions, with a concentration that stood at 15.6 micrograms per cubic meter of air (μg/m³). Murcia followed in second, with a PM2.5 concentration amounting to 15.2 μg/m³. These levels exceeded WHO guidelines by roughly three times.
Average PM2.5 concentration in the most polluted cities in Spain in 2022
(in micrograms per cubic meter of air)
Characteristic
PM2.5 concentration in µg/m³
Puebla de Alfindén
15.6
Murcia
15.2
Bailén
14.8
Mollet del Vallès
14.5
Arona
14.4
Cartagena
14.3
Palma
14.3
Las Rosas
14.2
Barreda
14.1
Alcantarilla
13.8
Natahoyo
13.7
Elche
13.7
Puertollano
13.6
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IQAir. (March 22, 2023). Average PM2.5 concentration in the most polluted cities in Spain in 2022 (in micrograms per cubic meter of air) [Graph]. In Statista. Retrieved May 07, 2025, from https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/
IQAir. "Average PM2.5 concentration in the most polluted cities in Spain in 2022 (in micrograms per cubic meter of air)." Chart. March 22, 2023. Statista. Accessed May 07, 2025. https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/
IQAir. (2023). Average PM2.5 concentration in the most polluted cities in Spain in 2022 (in micrograms per cubic meter of air). Statista. Statista Inc.. Accessed: May 07, 2025. https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/
IQAir. "Average Pm2.5 Concentration in The Most Polluted Cities in Spain in 2022 (in Micrograms per Cubic Meter of Air)." Statista, Statista Inc., 22 Mar 2023, https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/
IQAir, Average PM2.5 concentration in the most polluted cities in Spain in 2022 (in micrograms per cubic meter of air) Statista, https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/ (last visited May 07, 2025)
Average PM2.5 concentration in the most polluted cities in Spain in 2022 (in micrograms per cubic meter of air) [Graph], IQAir, March 22, 2023. [Online]. Available: https://www.statista.com/statistics/1322312/most-polluted-cities-based-on-pm25-concentration-spain/
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