Curated search · Environment

Countries With the Cleanest Air.

The WHO’s 2021 guideline tightened to PM2.5 annual mean of 5 µg/m³. Almost no country meets it. The threshold here is 10 µg/m³ — still cleaner than the WHO’s prior interim guideline, and a meaningful global filter.

44 matchesAir quality10

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44 countries match

Ranked by composite

Where in the world

44 countries

Europe16
Americas10
Asia1
Africa1
Oceania16

1
Greenland
100
Air quality 1.6 µg/m³
2
Northern Mariana Islands
98
Air quality 2.7 µg/m³
3
Guam
95
Air quality 3.5 µg/m³
4
Micronesia
93
Air quality 3.5 µg/m³
5
Kiribati
91
Air quality 3.9 µg/m³
6
Marshall Islands
89
Air quality 4.1 µg/m³
7
American Samoa
86
Air quality 4.3 µg/m³
8
Finland
84
Air quality 4.6 µg/m³
9
Samoa
82
Air quality 4.6 µg/m³
10
Bermuda
80
Air quality 4.6 µg/m³
11
Tonga
77
Air quality 4.7 µg/m³
12
Nauru
75
Air quality 4.8 µg/m³
13
Iceland
73
Air quality 4.9 µg/m³
14
Palau
70
Air quality 4.9 µg/m³
15
Tuvalu
68
Air quality 5.2 µg/m³
16
Sweden
66
Air quality 5.3 µg/m³
17
Bahamas
64
Air quality 5.3 µg/m³
18
Norway
61
Air quality 5.5 µg/m³
19
Estonia
59
Air quality 5.9 µg/m³
20
Australia
57
Air quality 6.4 µg/m³
21
Fiji
55
Air quality 6.4 µg/m³
22
Canada
52
Air quality 6.6 µg/m³
23
United States Virgin Islands
50
Air quality 6.8 µg/m³
24
New Zealand
48
Air quality 6.9 µg/m³
25
United States
45
Air quality 7.0 µg/m³
26
Vanuatu
43
Air quality 7.0 µg/m³
27
Luxembourg
41
Air quality 7.4 µg/m³
28
Denmark
39
Air quality 7.5 µg/m³
29
Ireland
36
Air quality 7.5 µg/m³
30
Brunei
34
Air quality 7.6 µg/m³
31
Puerto Rico
32
Air quality 7.8 µg/m³
32
France
30
Air quality 8.2 µg/m³
33
Switzerland
27
Air quality 8.3 µg/m³
34
Antigua and Barbuda
25
Air quality 8.4 µg/m³
35
Belgium
23
Air quality 8.4 µg/m³
36
Netherlands
20
Air quality 8.6 µg/m³
37
Portugal
18
Air quality 8.8 µg/m³
38
Germany
16
Air quality 8.8 µg/m³
39
Saint Kitts and Nevis
14
Air quality 8.9 µg/m³
40
Andorra
11
Air quality 8.9 µg/m³
41
Seychelles
9
Air quality 9.3 µg/m³
42
Cuba
7
Air quality 9.4 µg/m³
43
United Kingdom
5
Air quality 9.5 µg/m³
44
Solomon Islands
2
Air quality 9.8 µg/m³