Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration
(in micrograms per cubic meter)
Characteristic
PM2.5 concentration in μg/m³
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This chart shows the average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration, measured in micrograms per cubic meter. The least polluted cities were often located in the United States, Australia, or New Zealand.
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IQAir. (April 24, 2025). Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration (in micrograms per cubic meter) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/1638672/world-s-least-polluted-cities/
IQAir. "Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration (in micrograms per cubic meter)." Chart. April 24, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/1638672/world-s-least-polluted-cities/
IQAir. (2025). Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration (in micrograms per cubic meter). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/1638672/world-s-least-polluted-cities/
IQAir. "Average Annual Concentration of Fine Particulate Matter Pm2.5 Worldwide in 2024, in Cities with The Lowest Particle Concentration (in Micrograms per Cubic Meter)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 24 Apr 2025, /statistics/1638672/world-s-least-polluted-cities/
IQAir, Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration (in micrograms per cubic meter) ÌÇÐÄÆƽâ°æ, /statistics/1638672/world-s-least-polluted-cities/ (last visited July 25, 2026)
Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in cities with the lowest particle concentration (in micrograms per cubic meter) [Graph], IQAir, April 24, 2025. [Online]. Available: /statistics/1638672/world-s-least-polluted-cities/
