PM2.5の年間平均濃度は、直径2.5ミクロン未満の微小粒子状物質の濃度を示し、大気汚染の指標として重要です。この指標は、都市部の人口加重平均で計算され、大気汚染の影響を評価するために使用されます。PM2.5は呼吸器や心血管疾患、肺がんなどの健康リスクを高める要因であり、数値の減少は大気汚染削減の進展を意味します。
濃度の測定は、首都圏内の固定モニターで行われ、高品質なデータを基に平均値を算出します。地域および世界の推定値は、国ごとのデータを人口で加重した値から導かれます。ただし、監視装置が不足する地域もあり、データの精度向上が課題です。WHOはデータ収集と検証を行い、国際的な協議を通じて情報を提供しています。
この指標は持続可能な開発目標(SDGs)11.6.2に関連し、都市部の環境改善と健康リスク軽減の進捗を測定する役割を担っています。
| 順位 | 国名 | 濃度 |
|---|---|---|
| 1 |
|
75.18µg/m3 |
| 2 |
|
67.22µg/m3 |
| 3 |
|
64.1µg/m3 |
| 4 |
|
61.63µg/m3 |
| 5 |
|
60.72µg/m3 |
| 6 |
|
59.96µg/m3 |
| 7 |
|
56.79µg/m3 |
| 8 |
|
55.52µg/m3 |
| 9 |
|
55.33µg/m3 |
| 10 |
|
54µg/m3 |
| 11 |
|
53.02µg/m3 |
| 12 |
|
51.84µg/m3 |
| 13 |
|
51.58µg/m3 |
| 14 |
|
51.28µg/m3 |
| 15 |
|
50.61µg/m3 |
| 16 |
|
50.41µg/m3 |
| 17 |
|
46.84µg/m3 |
| 18 |
|
46.57µg/m3 |
| 19 |
|
46.03µg/m3 |
| 20 |
|
45.05µg/m3 |
| 21 |
|
44.54µg/m3 |
| 22 |
|
43.92µg/m3 |
| 23 |
|
43.32µg/m3 |
| 24 |
|
43.03µg/m3 |
| 25 |
|
42.95µg/m3 |
| 26 |
|
42.37µg/m3 |
| 27 |
|
42.18µg/m3 |
| 28 |
|
41.39µg/m3 |
| 29 |
|
40.52µg/m3 |
| 30 |
|
40.16µg/m3 |
| 31 |
|
40.06µg/m3 |
| 32 |
|
39.64µg/m3 |
| 33 |
|
39.03µg/m3 |
| 34 |
|
37.88µg/m3 |
| 35 |
|
37.81µg/m3 |
| 36 |
|
37.44µg/m3 |
| 37 |
|
36.92µg/m3 |
| 38 |
|
36.23µg/m3 |
| 39 |
|
36.23µg/m3 |
| 40 |
|
35.75µg/m3 |
| 41 |
|
35.71µg/m3 |
| 42 |
|
35.43µg/m3 |
| 43 |
|
34.1µg/m3 |
| 44 |
|
32.86µg/m3 |
| 45 |
|
32.62µg/m3 |
| 46 |
|
32.32µg/m3 |
| 47 |
|
32.28µg/m3 |
| 48 |
|
32.17µg/m3 |
| 49 |
|
31.77µg/m3 |
| 50 |
|
31.74µg/m3 |
| 51 |
|
31.34µg/m3 |
| 52 |
|
29.67µg/m3 |
| 53 |
|
28.67µg/m3 |
| 54 |
|
28.37µg/m3 |
| 55 |
|
28.25µg/m3 |
| 56 |
|
27.75µg/m3 |
| 57 |
|
27.38µg/m3 |
| 58 |
|
27.06µg/m3 |
| 59 |
|
26.88µg/m3 |
| 60 |
|
26.42µg/m3 |
| 61 |
|
26.18µg/m3 |
| 62 |
|
25.76µg/m3 |
| 63 |
|
25.48µg/m3 |
| 64 |
|
25.31µg/m3 |
| 65 |
|
24.78µg/m3 |
| 66 |
|
24.37µg/m3 |
| 67 |
|
24.35µg/m3 |
| 68 |
|
24.2µg/m3 |
| 69 |
|
24.18µg/m3 |
| 70 |
|
24.03µg/m3 |
| 71 |
|
23.74µg/m3 |
| 72 |
|
23.46µg/m3 |
| 73 |
|
23.28µg/m3 |
| 74 |
|
22.93µg/m3 |
| 75 |
|
22.85µg/m3 |
| 76 |
|
22.75µg/m3 |
| 77 |
|
22.32µg/m3 |
| 78 |
|
22.15µg/m3 |
| 79 |
|
22.11µg/m3 |
| 80 |
|
21.78µg/m3 |
| 81 |
|
21.77µg/m3 |
| 82 |
|
21.69µg/m3 |
| 83 |
|
21.35µg/m3 |
| 84 |
|
20.85µg/m3 |
| 85 |
|
20.72µg/m3 |
| 86 |
|
20.18µg/m3 |
| 87 |
|
19.93µg/m3 |
| 88 |
|
19.89µg/m3 |
| 89 |
|
19.64µg/m3 |
| 90 |
|
19.41µg/m3 |
| 91 |
|
18.84µg/m3 |
| 92 |
|
18.55µg/m3 |
| 93 |
|
18.54µg/m3 |
| 94 |
|
18.42µg/m3 |
| 95 |
|
18.42µg/m3 |
| 96 |
|
18.34µg/m3 |
| 97 |
|
17.93µg/m3 |
| 98 |
|
17.51µg/m3 |
| 99 |
|
17.43µg/m3 |
| 100 |
|
17.18µg/m3 |
| 101 |
|
16.91µg/m3 |
| 102 |
|
16.9µg/m3 |
| 103 |
|
16.73µg/m3 |
| 104 |
|
16.57µg/m3 |
| 105 |
|
16.54µg/m3 |
| 106 |
|
16.26µg/m3 |
| 107 |
|
16.11µg/m3 |
| 108 |
|
15.94µg/m3 |
| 109 |
|
15.86µg/m3 |
| 110 |
|
15.78µg/m3 |
| 111 |
|
15.57µg/m3 |
| 112 |
|
15.48µg/m3 |
| 113 |
|
15.46µg/m3 |
| 114 |
|
15.08µg/m3 |
| 115 |
|
15.06µg/m3 |
| 116 |
|
14.89µg/m3 |
| 117 |
|
14.82µg/m3 |
| 118 |
|
14.72µg/m3 |
| 119 |
|
14.6µg/m3 |
| 120 |
|
14.51µg/m3 |
| 121 |
|
14.48µg/m3 |
| 122 |
|
14.47µg/m3 |
| 123 |
|
14.42µg/m3 |
| 124 |
|
14.41µg/m3 |
| 125 |
|
14.13µg/m3 |
| 126 |
|
14.1µg/m3 |
| 127 |
|
13.72µg/m3 |
| 128 |
|
13.33µg/m3 |
| 129 |
|
13.23µg/m3 |
| 130 |
|
13.13µg/m3 |
| 131 |
|
13.03µg/m3 |
| 132 |
|
12.93µg/m3 |
| 133 |
|
12.73µg/m3 |
| 134 |
|
12.69µg/m3 |
| 135 |
|
12.41µg/m3 |
| 136 |
|
12.33µg/m3 |
| 137 |
|
11.89µg/m3 |
| 138 |
|
11.7µg/m3 |
| 139 |
|
11.66µg/m3 |
| 140 |
|
11.56µg/m3 |
| 141 |
|
11.33µg/m3 |
| 142 |
|
11.25µg/m3 |
| 143 |
|
11.23µg/m3 |
| 144 |
|
11.15µg/m3 |
| 145 |
|
11.09µg/m3 |
| 146 |
|
10.88µg/m3 |
| 147 |
|
10.47µg/m3 |
| 148 |
|
10.44µg/m3 |
| 149 |
|
10.39µg/m3 |
| 150 |
|
10.22µg/m3 |
| 151 |
|
10.11µg/m3 |
| 152 |
|
9.85µg/m3 |
| 153 |
|
9.84µg/m3 |
| 154 |
|
9.83µg/m3 |
| 155 |
|
9.78µg/m3 |
| 156 |
|
9.77µg/m3 |
| 157 |
|
9.71µg/m3 |
| 158 |
|
9.5µg/m3 |
| 159 |
|
9.5µg/m3 |
| 160 |
|
9.24µg/m3 |
| 161 |
|
9.21µg/m3 |
| 162 |
|
9.11µg/m3 |
| 163 |
|
9.1µg/m3 |
| 164 |
|
9.08µg/m3 |
| 165 |
|
8.93µg/m3 |
| 166 |
|
8.88µg/m3 |
| 167 |
|
8.69µg/m3 |
| 168 |
|
8.69µg/m3 |
| 169 |
|
8.67µg/m3 |
| 170 |
|
8.5µg/m3 |
| 171 |
|
8.42µg/m3 |
| 172 |
|
8.38µg/m3 |
| 173 |
|
8.14µg/m3 |
| 174 |
|
8.12µg/m3 |
| 175 |
|
8.07µg/m3 |
| 176 |
|
7.98µg/m3 |
| 177 |
|
7.91µg/m3 |
| 178 |
|
7.86µg/m3 |
| 179 |
|
7.76µg/m3 |
| 180 |
|
7.74µg/m3 |
| 181 |
|
7.62µg/m3 |
| 182 |
|
7.62µg/m3 |
| 183 |
|
7.54µg/m3 |
| 184 |
|
7.41µg/m3 |
| 185 |
|
7.4µg/m3 |
| 186 |
|
7.19µg/m3 |
| 187 |
|
6.76µg/m3 |
| 188 |
|
6.7µg/m3 |
| 189 |
|
6.61µg/m3 |
| 190 |
|
6.39µg/m3 |
| 191 |
|
6.2µg/m3 |
| 192 |
|
6.2µg/m3 |
| 193 |
|
5.19µg/m3 |