Air Quality
Excellent
No health implications.
11
PM2.5
22
PM10
61
O3
0.1
CO
3
SO2
4
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 May
50
Excellent
Wed
20 May
50
Excellent
Thu
21 May
50
Excellent
Fri
22 May
50
Excellent
Real-time AQI (Monitoring Station in Hualien)
花莲
3211
PM2.5
22
PM10
61
O3
0.1
CO
3
SO2
4
NO2
Air quality in the last 12 months (Hualien)
|
2026/04
|
34
|
39
|
41
|
33
|
38
|
31
|
37
|
44
|
47
|
41
|
32
|
27
|
42
|
31
|
28
|
33
|
38
|
35
|
37
|
38
|
41
|
44
|
34
|
28
|
37
|
42
|
40
|
44
|
31
|
29
|
|
|
2026/03
|
34
|
41
|
28
|
36
|
31
|
41
|
47
|
35
|
38
|
43
|
39
|
45
|
62
|
47
|
48
|
35
|
40
|
50
|
29
|
40
|
37
|
39
|
31
|
31
|
41
|
34
|
43
|
39
|
53
|
40
|
41
|
|
2026/02
|
21
|
40
|
49
|
30
|
32
|
41
|
28
|
46
|
43
|
38
|
48
|
58
|
48
|
49
|
31
|
38
|
37
|
50
|
54
|
70
|
54
|
62
|
100
|
68
|
31
|
51
|
51
|
31
|
|||
|
2026/01
|
22
|
28
|
39
|
30
|
46
|
39
|
44
|
50
|
58
|
57
|
62
|
57
|
59
|
49
|
44
|
50
|
47
|
22
|
35
|
31
|
46
|
52
|
43
|
46
|
44
|
32
|
23
|
29
|
34
|
38
|
17
|
|
2025/12
|
42
|
43
|
47
|
36
|
30
|
30
|
32
|
42
|
38
|
28
|
35
|
47
|
49
|
41
|
53
|
42
|
50
|
53
|
47
|
47
|
65
|
27
|
33
|
48
|
23
|
33
|
24
|
27
|
30
|
41
|
34
|
|
2025/11
|
32
|
54
|
42
|
18
|
21
|
24
|
38
|
37
|
35
|
43
|
22
|
10
|
13
|
36
|
42
|
31
|
34
|
27
|
32
|
45
|
49
|
53
|
44
|
41
|
54
|
75
|
60
|
105
|
83
|
54
|
|
|
2025/10
|
20
|
16
|
17
|
20
|
24
|
29
|
22
|
25
|
22
|
23
|
22
|
19
|
17
|
32
|
16
|
29
|
32
|
35
|
29
|
31
|
23
|
27
|
31
|
31
|
36
|
48
|
43
|
24
|
26
|
32
|
36
|
|
2025/09
|
22
|
34
|
31
|
32
|
24
|
24
|
20
|
23
|
22
|
29
|
25
|
26
|
37
|
28
|
22
|
24
|
22
|
23
|
20
|
23
|
25
|
27
|
33
|
32
|
23
|
19
|
18
|
19
|
25
|
22
|
|
|
2025/08
|
34
|
32
|
37
|
20
|
20
|
32
|
43
|
47
|
31
|
21
|
24
|
25
|
31
|
29
|
20
|
22
|
24
|
16
|
20
|
32
|
34
|
31
|
23
|
21
|
17
|
14
|
14
|
16
|
17
|
18
|
16
|
|
2025/07
|
18
|
22
|
24
|
25
|
17
|
19
|
27
|
41
|
31
|
16
|
13
|
28
|
39
|
42
|
34
|
37
|
32
|
22
|
32
|
34
|
22
|
20
|
22
|
24
|
21
|
32
|
31
|
29
|
21
|
37
|
46
|
|
2025/06
|
45
|
39
|
17
|
27
|
28
|
22
|
18
|
25
|
22
|
20
|
19
|
24
|
29
|
30
|
33
|
28
|
27
|
28
|
24
|
20
|
22
|
26
|
29
|
32
|
21
|
19
|
18
|
23
|
17
|
13
|
|
|
2025/05
|
48
|
50
|
46
|
33
|
42
|
40
|
47
|
54
|
54
|
33
|
30
|
36
|
30
|
26
|
22
|
21
|
24
|
16
|
25
|
31
|
22
|
37
|
42
|
21
|
50
|
39
|
23
|
21
|
15
|
37
|
44
|
|
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