Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
PM2.5
PM10
O3
CO
SO2
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
25 Apr
Sat
26 Apr
Sun
27 Apr
Mon
28 Apr
Real-time AQI (Monitoring Station in Yilan)
宜兰
800
PM2.5
4
PM10
128 *
O3
0.3
CO
1
SO2
10
NO2
冬山
816
PM2.5
11
PM10
122 *
O3
0.3
CO
2
SO2
23
NO2
Air quality in the last 12 months (Yilan)
|
2025/02
|
32
|
16
|
27
|
70
|
56
|
37
|
30
|
47
|
32
|
31
|
38
|
57
|
71
|
49
|
42
|
69
|
70
|
33
|
40
|
24
|
21
|
35
|
19
|
72
|
63
|
59
|
65
|
67
|
|||
|
2025/01
|
48
|
30
|
32
|
28
|
32
|
50
|
65
|
46
|
51
|
38
|
34
|
48
|
47
|
43
|
76
|
49
|
56
|
44
|
46
|
59
|
89
|
48
|
37
|
20
|
34
|
33
|
22
|
41
|
50
|
32
|
35
|
|
2024/12
|
38
|
42
|
31
|
33
|
26
|
29
|
28
|
62
|
23
|
18
|
24
|
19
|
20
|
70
|
74
|
50
|
40
|
46
|
41
|
20
|
42
|
53
|
19
|
19
|
16
|
49
|
70
|
68
|
37
|
38
|
50
|
|
2024/11
|
17
|
17
|
38
|
38
|
46
|
33
|
32
|
30
|
23
|
21
|
19
|
23
|
28
|
22
|
19
|
11
|
20
|
29
|
18
|
15
|
21
|
28
|
30
|
21
|
30
|
19
|
40
|
34
|
42
|
39
|
|
|
2024/10
|
17
|
14
|
19
|
15
|
15
|
18
|
16
|
18
|
36
|
43
|
42
|
29
|
23
|
26
|
23
|
25
|
34
|
33
|
28
|
21
|
29
|
36
|
41
|
33
|
21
|
20
|
22
|
22
|
36
|
34
|
22
|
|
2024/09
|
28
|
24
|
23
|
24
|
21
|
18
|
18
|
12
|
23
|
39
|
47
|
31
|
16
|
21
|
27
|
21
|
28
|
26
|
20
|
21
|
23
|
12
|
13
|
14
|
20
|
14
|
21
|
25
|
25
|
20
|
|
|
2024/08
|
28
|
46
|
44
|
37
|
33
|
20
|
29
|
35
|
40
|
45
|
48
|
52
|
47
|
33
|
29
|
15
|
21
|
19
|
15
|
12
|
22
|
27
|
35
|
40
|
28
|
31
|
45
|
38
|
37
|
30
|
31
|
|
2024/07
|
22
|
21
|
23
|
22
|
27
|
21
|
19
|
20
|
18
|
21
|
30
|
32
|
28
|
26
|
19
|
16
|
20
|
21
|
26
|
22
|
20
|
17
|
23
|
19
|
21
|
20
|
22
|
26
|
21
|
16
|
16
|
|
2024/06
|
11
|
9
|
18
|
33
|
30
|
17
|
18
|
16
|
20
|
13
|
15
|
27
|
27
|
28
|
21
|
17
|
18
|
15
|
19
|
24
|
32
|
35
|
31
|
19
|
18
|
22
|
34
|
19
|
20
|
20
|
|
|
2024/05
|
19
|
23
|
27
|
36
|
48
|
48
|
34
|
40
|
25
|
32
|
31
|
34
|
32
|
29
|
41
|
38
|
32
|
35
|
24
|
23
|
14
|
17
|
27
|
28
|
20
|
24
|
18
|
21
|
23
|
25
|
34
|
|
2024/04
|
38
|
56
|
42
|
29
|
29
|
38
|
21
|
38
|
28
|
50
|
48
|
39
|
26
|
28
|
53
|
34
|
36
|
38
|
93
|
77
|
42
|
28
|
30
|
29
|
43
|
49
|
39
|
23
|
39
|
21
|
|
|
2024/03
|
20
|
44
|
50
|
52
|
51
|
20
|
46
|
62
|
60
|
42
|
44
|
41
|
56
|
58
|
43
|
44
|
64
|
48
|
49
|
68
|
61
|
65
|
59
|
40
|
30
|
40
|
27
|
53
|
48
|
60
|
46
|
|
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
*: primary pollution