Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration
(in micrograms per cubic meter)
Characteristic
PM2.5 concentration in micrograms per cubic meter
Chad
91.8
Bangladesh
78
Pakistan
73.7
Democratic Republic of the Congo
58.2
India
50.6
Tajikistan
46.3
Nepal
42.8
Uganda
41
Rwanda
40.8
Burundi
40.3
Nigeria
40.1
Egypt
39.8
Iraq
38.4
Ghana
35.8
Indonesia
35.5
Gambia
35.2
United Arab Emirates
33.7
Bahrain
31.8
Uzbekistan
31.4
Qatar
31.3
China
31
Kuwait
30.2
Vietnam
28.7
Cameroon
27.6
Laos
27.5
Turkmenistan
26.5
Togo
26
Mongolia
25.6
Bosnia and Herzegovina
25.3
Burma
25.2
Saudi Arabia
25.1
Zimbabwe
24.8
Ivory Coast
24.6
Armenia
24.4
North Macedonia
23.3
Libya
22.3
Senegal
22.3
Ethiopia
22.2
Zambia
22
Cambodia
21.9
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This statistic presents the average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in the countries with the highest particle concentration, measured in micrograms per cubic meter. In terms of air pollution from fine particles with a diameter of less than 2.5 micrometers, Chad was the most polluted country in the world in 2024.
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IQAir. (April 24, 2025). Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration (in micrograms per cubic meter) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/
IQAir. "Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration (in micrograms per cubic meter)." Chart. April 24, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/
IQAir. (2025). Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration (in micrograms per cubic meter). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/
IQAir. "Average Annual Concentration of Fine Particulate Matter Pm2.5 Worldwide in 2024, in Countries with The Highest Particle Concentration (in Micrograms per Cubic Meter)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 24 Apr 2025, /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/
IQAir, Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration (in micrograms per cubic meter) ÌÇÐÄÆƽâ°æ, /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/ (last visited July 25, 2026)
Average annual concentration of fine particulate matter PM2.5 worldwide in 2024, in countries with the highest particle concentration (in micrograms per cubic meter) [Graph], IQAir, April 24, 2025. [Online]. Available: /statistics/1637961/exposition-population-particulate-matter-fine-by-country-oecd/
