Air Quality
Excellent
No health implications.
26
PM2.5
47
PM10
94
O3
0.3
CO
3
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Mar
75
Good
Fri
20 Mar
61
Good
Sat
21 Mar
84
Good
Sun
22 Mar
79
Good
Mon
23 Mar
64
Good
Tue
24 Mar
83
Good
Wed
25 Mar
18
Excellent
Yilan Air quality rank
Air quality in the last 12 months (Yilan)
|
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
|
|
2025/07
|
17
|
16
|
14
|
18
|
18
|
15
|
14
|
17
|
15
|
13
|
19
|
19
|
16
|
14
|
13
|
12
|
15
|
17
|
17
|
11
|
11
|
21
|
19
|
20
|
14
|
12
|
16
|
12
|
18
|
9
|
13
|
|
2025/06
|
37
|
25
|
21
|
15
|
17
|
16
|
16
|
23
|
24
|
19
|
15
|
18
|
24
|
28
|
21
|
21
|
13
|
16
|
16
|
20
|
10
|
13
|
25
|
32
|
40
|
37
|
33
|
32
|
22
|
22
|
|
|
2025/05
|
38
|
37
|
24
|
24
|
22
|
28
|
31
|
26
|
26
|
24
|
43
|
66
|
69
|
47
|
30
|
26
|
25
|
21
|
24
|
25
|
29
|
19
|
19
|
23
|
16
|
21
|
29
|
35
|
44
|
45
|
47
|
|
2025/04
|
61
|
55
|
56
|
56
|
55
|
40
|
37
|
52
|
57
|
83
|
98
|
83
|
44
|
24
|
22
|
35
|
83
|
69
|
26
|
47
|
69
|
33
|
30
|
33
|
32
|
20
|
30
|
34
|
42
|
45
|
|
|
2025/03
|
25
|
35
|
32
|
42
|
47
|
54
|
51
|
46
|
61
|
79
|
63
|
49
|
27
|
26
|
28
|
27
|
30
|
35
|
41
|
70
|
54
|
18
|
32
|
43
|
40
|
52
|
29
|
20
|
20
|
28
|
41
|
|
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