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
18 Jul
Sat
19 Jul
Sun
20 Jul
Mon
21 Jul
Tue
22 Jul
Real-time AQI (Monitoring Station in Yilan)
宜兰
110
PM2.5
1
PM10
29
O3
0.0
CO
1
SO2
2
NO2
冬山
123
PM2.5
4
PM10
29
O3
0.2
CO
3
SO2
8
NO2
Air quality in the last 12 months (Yilan)
|
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
|
|||
|
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
|
|
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