World's most polluted countries 2019 (PM2.5)
The most polluted countries according to data aggregated from over 60,000 data points.
2019
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World air quality report
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2019 Report - English
PM2.5 Legend
Unit: µg/m³
WHO target Good Moderate Unhealthy for sensitive groups Unhealthy Very unhealthy Hazardous
| Rank | Country/Region | 2019 AVG | 2018 AVG | Population |
|---|---|---|---|---|
| 1 |  Bangladesh | 83.30 | 97.10 | 166,368,149 |
| 2 |  Pakistan | 65.81 | 74.27 | 200,813,818 |
| 3 |  Mongolia | 62.00 | 58.50 | 3,121,772 |
| 4 |  Afghanistan | 58.80 | 61.80 | 36,373,176 |
| 5 |  India | 58.08 | 72.54 | 1,354,051,854 |
| 6 |  Indonesia | 51.71 | 42.01 | 266,794,980 |
| 7 |  Bahrain | 46.80 | 59.80 | 1,566,993 |
| 8 |  Nepal | 44.46 | 54.15 | 29,624,035 |
| 9 |  Uzbekistan | 41.20 | 34.30 | 32,364,996 |
| 10 |  Iraq | 39.60 | - | 39,127,900 |
| 11 |  China | 39.12 | 41.17 | 1,415,045,928 |
| 12 |  United Arab Emirates | 38.94 | 49.93 | 9,541,615 |
| 13 |  Kuwait | 38.30 | 56.00 | 4,197,128 |
| 14 |  Bosnia Herzegovina | 34.58 | 39.97 | 3,503,554 |
| 15 |  Vietnam | 34.06 | 32.91 | 96,491,146 |
| 16 |  Kyrgyzstan | 33.20 | - | 6,389,500 |
| 17 |  North Macedonia | 32.40 | 35.47 | 2,085,051 |
| 18 |  Syria | 32.20 | - | 17,070,135 |
| 19 |  Democratic Republic of the Congo | 32.10 | - | 5,380,508 |
| 20 |  Myanmar | 31.00 | - | 54,339,766 |
| 21 |  Ghana | 30.30 | - | 30,280,800 |
| 22 |  Uganda | 29.10 | 40.80 | 44,270,563 |
| 23 |  Armenia | 25.51 | - | 2,957,500 |
| 24 |  Bulgaria | 25.49 | 25.82 | 7,036,848 |
| 25 |  Sri Lanka | 25.20 | 32.00 | 20,950,041 |
| 26 |  South Korea | 24.78 | 24.01 | 51,164,435 |
| 27 |  Iran | 24.27 | 24.97 | 82,011,735 |
| 28 |  Thailand | 24.25 | 26.44 | 69,183,173 |
| 29 |  Kazakhstan | 23.60 | 29.80 | 18,403,860 |
| 30 |  Macao SAR | 23.50 | 21.20 | 632,000 |
| 31 |  Kosovo | 23.50 | 30.40 | 1,831,000 |
| 32 |  Serbia | 23.30 | 23.90 | 8,762,027 |
| 33 |  Peru | 23.28 | 28.00 | 32,551,815 |
| 34 |  Laos | 23.10 | - | 7,123,205 |
| 35 |  Chile | 22.63 | 24.94 | 18,197,209 |
| 36 |  Greece | 22.50 | - | 10,724,599 |
| 37 |  Saudi Arabia | 22.50 | - | 33,413,660 |
| 38 |  South Africa | 21.56 | - | 58,775,022 |
| 39 |  Nigeria | 21.40 | 44.84 | 195,875,237 |
| 40 |  Algeria | 21.20 | - | 34,080,030 |
| 41 |  Cambodia | 21.10 | 20.10 | 16,245,729 |
| 42 |  Israel | 20.83 | 18.60 | 8,452,841 |
| 43 |  Turkey | 20.62 | 21.90 | 81,916,871 |
| 44 |  Hong Kong SAR | 20.30 | 20.20 | 7,428,887 |
| 45 |  Guatemala | 20.20 | - | 14,901,286 |
| 46 |  Ethiopia | 20.10 | 27.10 | 107,534,882 |
| 47 |  Georgia | 20.10 | - | 3,723,464 |
| 48 |  Mexico | 20.02 | 20.29 | 130,759,074 |
| 49 |  Cyprus | 19.72 | 17.58 | 1,189,085 |
| 50 |  Malaysia | 19.36 | - | 32,700,760 |
| 51 |  Croatia | 19.09 | 22.18 | 4,164,783 |
| 52 |  Singapore | 19.00 | 14.80 | 5,930,000 |
| 53 |  Poland | 18.67 | 22.39 | 38,104,832 |
| 54 |  Romania | 18.32 | 18.65 | 19,580,634 |
| 55 |  Jordan | 18.30 | - | 10,622,608 |
| 56 |  Egypt | 18.00 | - | 97,147,368 |
| 57 |  Philippines | 17.63 | 14.62 | 106,512,074 |
| 58 |  Taiwan | 17.16 | 18.54 | 23,694,089 |
| 59 |  Italy | 17.09 | 14.95 | 59,290,969 |
| 60 |  Ukraine | 16.60 | 14.00 | 44,009,214 |
| 61 |  Slovakia | 16.10 | 18.50 | 5,449,816 |
| 62 |  Angola | 15.90 | - | 31,127,674 |
| 63 |  Brazil | 15.77 | 16.29 | 210,867,954 |
| 64 |  Colombia | 14.61 | 13.90 | 49,464,683 |
| 65 |  Argentina | 14.60 | - | 44,938,700 |
| 66 |  Hungary | 14.57 | 16.81 | 9,688,847 |
| 67 |  Lithuania | 14.49 | 17.48 | 2,876,475 |
| 68 |  Czech Republic | 14.45 | 20.18 | 10,625,250 |
| 69 |  Latvia | 13.30 | - | 1,906,800 |
| 70 |  Belgium | 12.52 | 13.52 | 11,498,519 |
| 71 |  France | 12.34 | 13.16 | 65,233,271 |
| 72 |  Austria | 12.17 | 15.01 | 8,751,820 |
| 73 |  Japan | 11.36 | 12.00 | 127,185,332 |
| 74 |  Germany | 11.01 | 13.01 | 82,293,457 |
| 75 |  Netherlands | 10.91 | 11.72 | 17,084,459 |
| 76 |  Switzerland | 10.89 | 11.63 | 8,544,034 |
| 77 |  Ireland | 10.60 | 9.50 | 4,803,748 |
| 78 |  United Kingdom | 10.53 | 10.83 | 66,573,504 |
| 79 |  Costa Rica | 10.40 | - | 5,058,007 |
| 80 |  Puerto Rico | 10.21 | 13.73 | 3,659,007 |
| 81 |  Russia | 9.85 | 11.42 | 143,964,709 |
| 82 |  Spain | 9.74 | 10.34 | 46,397,452 |
| 83 |  Luxembourg | 9.60 | 11.15 | 590,321 |
| 84 |  Denmark | 9.60 | - | 5,822,763 |
| 85 |  Malta | 9.40 | 11.00 | 432,089 |
| 86 |  Portugal | 9.26 | 9.37 | 10,291,196 |
| 87 |  USA | 9.04 | 9.05 | 326,766,748 |
| 88 |  Ecuador | 8.60 | - | 17,431,712 |
| 89 |  Australia | 8.00 | 6.82 | 24,772,247 |
| 90 |  Canada | 7.72 | 7.91 | 36,953,765 |
| 91 |  New Zealand | 7.52 | 7.72 | 4,749,598 |
| 92 |  Norway | 6.88 | 7.61 | 5,353,363 |
| 93 |  Sweden | 6.63 | 7.37 | 9,982,709 |
| 94 |  Estonia | 6.15 | 7.20 | 1,306,788 |
| 95 |  Finland | 5.63 | 6.57 | 5,542,517 |
| 96 |  Iceland | 5.55 | 5.05 | 337,780 |
| 97 |  U.S. Virgin Islands | 3.53 | - | 104,578 |
| 98 |  Bahamas | 3.30 | - | 385,340 |
2019 World air quality report
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