Air Quality
Excellent
No health implications.
8
PM2.5
14
PM10
35
O3
0.5
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Aug
50
Excellent
Mon
24 Aug
48
Excellent
Tue
25 Aug
53
Good
Wed
26 Aug
51
Good
Thu
27 Aug
55
Good
Fri
28 Aug
52
Good
Sat
29 Aug
23
Excellent
Air quality in the last 12 months (Yilan)
|
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
|
|
|
2025/08
|
16
|
17
|
16
|
14
|
13
|
13
|
13
|
12
|
14
|
15
|
12
|
24
|
25
|
13
|
16
|
13
|
14
|
17
|
16
|
17
|
16
|
14
|
18
|
16
|
14
|
12
|
17
|
20
|
15
|
16
|
27
|
|
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