Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
39
PM2.5
74
*
PM10
16
O3
0.4
CO
5
SO2
26
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
15 Oct
61
Good
Thu
16 Oct
60
Good
Fri
17 Oct
63
Good
Sat
18 Oct
60
Good
Sun
19 Oct
60
Good
Mon
20 Oct
27
Excellent
Tue
21 Oct
45
Excellent
Yilan Air quality rank
Air quality in the last 12 months (Yilan)
|
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
|
|
2025/02
|
73
|
96
|
105
|
75
|
49
|
47
|
44
|
43
|
48
|
65
|
73
|
78
|
53
|
49
|
57
|
40
|
39
|
30
|
35
|
49
|
48
|
42
|
42
|
41
|
48
|
38
|
54
|
68
|
|||
|
2025/01
|
91
|
98
|
98
|
109
|
111
|
99
|
85
|
67
|
47
|
70
|
94
|
106
|
115
|
121
|
74
|
55
|
75
|
98
|
128
|
136
|
139
|
143
|
128
|
114
|
117
|
126
|
59
|
53
|
74
|
55
|
59
|
|
2024/12
|
60
|
42
|
35
|
30
|
36
|
37
|
46
|
51
|
65
|
70
|
51
|
55
|
59
|
58
|
46
|
46
|
54
|
51
|
66
|
94
|
80
|
75
|
66
|
60
|
69
|
38
|
50
|
63
|
64
|
72
|
70
|
|
2024/11
|
72
|
50
|
52
|
39
|
56
|
41
|
50
|
59
|
77
|
59
|
79
|
75
|
90
|
122
|
96
|
55
|
30
|
33
|
62
|
89
|
88
|
45
|
46
|
54
|
62
|
42
|
34
|
44
|
44
|
39
|
|
|
2024/10
|
18
|
27
|
21
|
30
|
44
|
36
|
35
|
50
|
49
|
44
|
22
|
33
|
41
|
48
|
23
|
26
|
42
|
41
|
28
|
41
|
31
|
33
|
38
|
46
|
59
|
60
|
52
|
58
|
67
|
60
|
61
|
|
2024/09
|
18
|
19
|
24
|
24
|
16
|
17
|
18
|
26
|
24
|
19
|
21
|
33
|
22
|
26
|
20
|
31
|
32
|
29
|
23
|
23
|
25
|
23
|
25
|
28
|
31
|
21
|
27
|
38
|
35
|
25
|
|
|
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