Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Aug
Wed
26 Aug
Thu
27 Aug
Fri
28 Aug
Real-time AQI (Monitoring Station in Yilan)
宜兰
206
PM2.5
7
PM10
54
O3
0.1
CO
3
SO2
6
NO2
冬山
174
PM2.5
14
PM10
47
O3
0.3
CO
3
SO2
19
NO2
Air quality in the last 12 months (Yilan)
|
2026/07
|
28
|
33
|
27
|
29
|
27
|
26
|
21
|
30
|
30
|
27
|
30
|
33
|
21
|
22
|
23
|
26
|
33
|
35
|
40
|
33
|
41
|
47
|
47
|
32
|
23
|
31
|
18
|
16
|
18
|
23
|
33
|
|
2026/06
|
33
|
40
|
43
|
33
|
35
|
41
|
29
|
30
|
32
|
32
|
39
|
34
|
35
|
26
|
23
|
24
|
22
|
18
|
21
|
26
|
37
|
33
|
33
|
35
|
26
|
26
|
33
|
36
|
33
|
21
|
|
|
2026/05
|
42
|
46
|
39
|
33
|
32
|
33
|
30
|
36
|
33
|
30
|
33
|
30
|
26
|
28
|
28
|
32
|
34
|
30
|
33
|
38
|
43
|
47
|
41
|
39
|
46
|
44
|
43
|
31
|
45
|
47
|
43
|
|
2026/04
|
35
|
39
|
43
|
32
|
39
|
32
|
36
|
43
|
48
|
45
|
34
|
29
|
48
|
36
|
29
|
32
|
38
|
34
|
37
|
39
|
39
|
43
|
33
|
29
|
37
|
41
|
40
|
43
|
31
|
29
|
|
|
2026/03
|
33
|
38
|
27
|
35
|
29
|
40
|
47
|
34
|
36
|
42
|
38
|
44
|
60
|
45
|
44
|
34
|
41
|
51
|
29
|
41
|
36
|
39
|
31
|
31
|
41
|
33
|
43
|
40
|
53
|
40
|
42
|
|
2026/02
|
20
|
39
|
49
|
29
|
32
|
40
|
26
|
45
|
41
|
37
|
48
|
59
|
47
|
48
|
29
|
36
|
37
|
49
|
55
|
69
|
52
|
60
|
103
|
65
|
29
|
49
|
47
|
31
|
|||
|
2026/01
|
21
|
27
|
39
|
32
|
44
|
40
|
45
|
52
|
60
|
57
|
62
|
58
|
59
|
52
|
46
|
52
|
47
|
21
|
34
|
28
|
42
|
51
|
42
|
47
|
48
|
33
|
21
|
29
|
33
|
37
|
18
|
|
2025/12
|
44
|
45
|
49
|
36
|
30
|
29
|
32
|
43
|
36
|
28
|
35
|
46
|
48
|
40
|
54
|
42
|
50
|
55
|
47
|
47
|
65
|
27
|
34
|
50
|
23
|
33
|
23
|
27
|
29
|
42
|
32
|
|
2025/11
|
33
|
55
|
40
|
16
|
20
|
23
|
38
|
38
|
33
|
43
|
22
|
9
|
13
|
37
|
41
|
30
|
32
|
25
|
32
|
44
|
50
|
54
|
44
|
41
|
56
|
75
|
62
|
107
|
82
|
53
|
|
|
2025/10
|
18
|
15
|
16
|
17
|
23
|
28
|
20
|
24
|
21
|
22
|
22
|
19
|
16
|
30
|
15
|
28
|
30
|
33
|
26
|
28
|
21
|
26
|
30
|
30
|
35
|
46
|
41
|
23
|
23
|
30
|
32
|
|
2025/09
|
21
|
31
|
28
|
30
|
22
|
23
|
19
|
22
|
21
|
28
|
24
|
26
|
37
|
29
|
22
|
22
|
21
|
22
|
18
|
22
|
23
|
25
|
31
|
31
|
21
|
18
|
17
|
18
|
22
|
20
|
|
|
2025/08
|
34
|
32
|
37
|
21
|
18
|
32
|
44
|
48
|
34
|
24
|
27
|
24
|
30
|
28
|
20
|
20
|
22
|
16
|
20
|
32
|
33
|
30
|
22
|
19
|
15
|
14
|
12
|
16
|
17
|
16
|
15
|
|
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