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
16 Feb
Tue
17 Feb
Wed
18 Feb
Thu
19 Feb
Real-time AQI (Monitoring Station in Yilan)
宜兰
1811
PM2.5
14
PM10
43
O3
0.2
CO
3
SO2
2
NO2
冬山
1911
PM2.5
15
PM10
19
O3
0.2
CO
2
SO2
4
NO2
Air quality in the last 12 months (Yilan)
|
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
|
|
2025/07
|
18
|
22
|
24
|
24
|
16
|
17
|
23
|
38
|
27
|
16
|
13
|
26
|
37
|
40
|
34
|
38
|
32
|
20
|
31
|
33
|
20
|
19
|
21
|
23
|
20
|
29
|
28
|
29
|
20
|
34
|
47
|
|
2025/06
|
44
|
41
|
16
|
27
|
28
|
24
|
19
|
27
|
23
|
20
|
17
|
24
|
27
|
29
|
32
|
26
|
29
|
28
|
24
|
20
|
24
|
28
|
30
|
33
|
22
|
20
|
19
|
23
|
16
|
13
|
|
|
2025/05
|
46
|
48
|
48
|
31
|
42
|
41
|
47
|
54
|
53
|
32
|
29
|
35
|
28
|
25
|
21
|
22
|
27
|
18
|
25
|
32
|
23
|
37
|
44
|
22
|
51
|
39
|
23
|
22
|
15
|
37
|
43
|
|
2025/04
|
27
|
40
|
43
|
38
|
43
|
44
|
51
|
54
|
47
|
42
|
35
|
21
|
106
|
96
|
75
|
65
|
65
|
48
|
46
|
28
|
42
|
43
|
32
|
26
|
23
|
32
|
35
|
42
|
29
|
33
|
|
|
2025/03
|
55
|
37
|
27
|
21
|
13
|
15
|
36
|
44
|
28
|
27
|
43
|
34
|
29
|
31
|
31
|
30
|
49
|
49
|
44
|
48
|
47
|
45
|
57
|
69
|
63
|
42
|
56
|
51
|
56
|
24
|
20
|
|
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
|
|||
|
1
|
2
|
3
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4
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5
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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