Air Quality
Excellent
No health implications.
4
PM2.5
12
PM10
34
O3
0.3
CO
2
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Sep
48
Excellent
Tue
15 Sep
51
Good
Wed
16 Sep
52
Good
Thu
17 Sep
49
Excellent
Fri
18 Sep
49
Excellent
Sat
19 Sep
38
Excellent
Sun
20 Sep
23
Excellent
Air quality in the last 12 months (Yilan)
|
2026/08
|
18
|
19
|
23
|
27
|
29
|
27
|
19
|
23
|
26
|
28
|
33
|
24
|
22
|
23
|
25
|
28
|
29
|
24
|
19
|
27
|
35
|
27
|
19
|
18
|
27
|
23
|
24
|
29
|
25
|
20
|
20
|
|
2026/07
|
33
|
29
|
28
|
25
|
28
|
27
|
22
|
16
|
22
|
24
|
24
|
20
|
26
|
29
|
31
|
21
|
27
|
39
|
31
|
31
|
28
|
34
|
40
|
28
|
23
|
23
|
16
|
27
|
25
|
22
|
19
|
|
2026/06
|
46
|
25
|
23
|
16
|
15
|
18
|
18
|
16
|
19
|
23
|
26
|
27
|
23
|
21
|
26
|
24
|
23
|
27
|
34
|
27
|
23
|
26
|
28
|
36
|
33
|
28
|
25
|
24
|
27
|
34
|
|
|
2026/05
|
33
|
34
|
29
|
34
|
57
|
31
|
26
|
25
|
30
|
40
|
41
|
48
|
110
|
42
|
37
|
33
|
31
|
25
|
44
|
35
|
39
|
35
|
34
|
31
|
34
|
25
|
23
|
22
|
25
|
22
|
33
|
|
2026/04
|
83
|
179
|
99
|
45
|
44
|
36
|
25
|
48
|
58
|
31
|
30
|
32
|
26
|
37
|
48
|
53
|
54
|
33
|
35
|
56
|
43
|
26
|
33
|
38
|
30
|
28
|
34
|
35
|
34
|
45
|
|
|
2026/03
|
38
|
40
|
39
|
47
|
50
|
50
|
44
|
39
|
46
|
38
|
52
|
47
|
48
|
48
|
50
|
54
|
80
|
77
|
64
|
52
|
131
|
122
|
76
|
104
|
158
|
135
|
121
|
141
|
96
|
38
|
76
|
|
2026/02
|
61
|
65
|
58
|
74
|
42
|
31
|
37
|
39
|
60
|
85
|
74
|
57
|
82
|
58
|
35
|
51
|
82
|
30
|
50
|
51
|
77
|
71
|
61
|
46
|
49
|
55
|
42
|
37
|
|||
|
2026/01
|
34
|
42
|
63
|
53
|
46
|
59
|
49
|
38
|
62
|
67
|
59
|
66
|
67
|
48
|
64
|
56
|
62
|
67
|
76
|
48
|
41
|
40
|
50
|
51
|
40
|
45
|
56
|
70
|
49
|
43
|
45
|
|
2025/12
|
55
|
48
|
43
|
42
|
44
|
50
|
68
|
66
|
55
|
47
|
38
|
42
|
68
|
94
|
87
|
48
|
51
|
78
|
63
|
48
|
45
|
71
|
57
|
62
|
62
|
44
|
60
|
64
|
51
|
46
|
41
|
|
2025/11
|
90
|
52
|
43
|
50
|
99
|
93
|
58
|
82
|
62
|
31
|
57
|
62
|
48
|
61
|
68
|
75
|
52
|
49
|
85
|
93
|
55
|
129
|
156
|
105
|
67
|
97
|
88
|
72
|
60
|
50
|
|
|
2025/10
|
27
|
26
|
37
|
30
|
25
|
21
|
32
|
29
|
31
|
39
|
58
|
33
|
35
|
39
|
45
|
29
|
45
|
26
|
26
|
26
|
31
|
38
|
46
|
47
|
141
|
194
|
82
|
49
|
101
|
87
|
62
|
|
2025/09
|
24
|
19
|
18
|
31
|
28
|
17
|
16
|
16
|
16
|
18
|
22
|
27
|
32
|
30
|
19
|
20
|
16
|
16
|
19
|
24
|
21
|
20
|
24
|
29
|
21
|
19
|
27
|
26
|
29
|
39
|
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution