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
27 Jul
Tue
28 Jul
Wed
29 Jul
Thu
30 Jul
Real-time AQI (Monitoring Station in Chiayi)
新港
316
PM2.5
9
PM10
45
O3
0.2
CO
4
SO2
13
NO2
朴子
242
PM2.5
8
PM10
30
O3
0.2
CO
1
SO2
15
NO2
Air quality in the last 12 months (Chiayi)
|
2026/06
|
37
|
42
|
38
|
29
|
34
|
43
|
28
|
29
|
32
|
35
|
38
|
35
|
35
|
24
|
21
|
23
|
21
|
17
|
20
|
25
|
36
|
32
|
32
|
37
|
26
|
25
|
31
|
32
|
30
|
19
|
|
|
2026/05
|
41
|
45
|
39
|
33
|
34
|
34
|
33
|
39
|
35
|
32
|
35
|
35
|
28
|
25
|
28
|
33
|
36
|
32
|
35
|
35
|
36
|
47
|
39
|
37
|
38
|
38
|
39
|
31
|
45
|
51
|
46
|
|
2026/04
|
32
|
39
|
38
|
33
|
36
|
31
|
39
|
46
|
48
|
34
|
29
|
25
|
34
|
25
|
27
|
33
|
39
|
37
|
37
|
39
|
41
|
42
|
35
|
26
|
38
|
43
|
42
|
45
|
30
|
28
|
|
|
2026/03
|
33
|
46
|
27
|
34
|
30
|
41
|
48
|
36
|
39
|
43
|
41
|
45
|
59
|
45
|
47
|
34
|
39
|
47
|
30
|
40
|
38
|
37
|
32
|
30
|
39
|
35
|
41
|
37
|
50
|
41
|
40
|
|
2026/02
|
21
|
39
|
50
|
34
|
36
|
44
|
28
|
47
|
42
|
38
|
45
|
56
|
48
|
51
|
34
|
39
|
34
|
48
|
51
|
70
|
58
|
67
|
94
|
72
|
33
|
47
|
54
|
26
|
|||
|
2026/01
|
24
|
30
|
40
|
30
|
51
|
36
|
42
|
47
|
55
|
56
|
63
|
58
|
59
|
46
|
45
|
49
|
51
|
20
|
33
|
32
|
46
|
52
|
43
|
43
|
36
|
31
|
23
|
29
|
35
|
38
|
16
|
|
2025/12
|
43
|
41
|
47
|
37
|
31
|
31
|
33
|
43
|
41
|
30
|
37
|
49
|
50
|
41
|
51
|
43
|
49
|
54
|
50
|
48
|
67
|
28
|
33
|
48
|
24
|
34
|
25
|
29
|
32
|
42
|
36
|
|
2025/11
|
30
|
52
|
45
|
19
|
21
|
25
|
36
|
35
|
37
|
42
|
22
|
10
|
13
|
34
|
43
|
33
|
35
|
30
|
30
|
43
|
46
|
50
|
44
|
43
|
51
|
76
|
58
|
101
|
83
|
55
|
|
|
2025/10
|
22
|
16
|
19
|
23
|
27
|
31
|
24
|
26
|
24
|
24
|
23
|
21
|
19
|
34
|
18
|
29
|
32
|
35
|
30
|
32
|
22
|
25
|
31
|
33
|
37
|
48
|
45
|
26
|
27
|
34
|
40
|
|
2025/09
|
26
|
37
|
33
|
33
|
24
|
23
|
19
|
22
|
21
|
29
|
25
|
26
|
34
|
27
|
24
|
25
|
22
|
23
|
20
|
22
|
26
|
26
|
32
|
32
|
24
|
19
|
20
|
21
|
26
|
26
|
|
|
2025/08
|
34
|
31
|
34
|
17
|
20
|
31
|
41
|
46
|
27
|
18
|
22
|
24
|
31
|
28
|
21
|
23
|
24
|
18
|
21
|
31
|
33
|
32
|
25
|
23
|
21
|
17
|
16
|
18
|
18
|
18
|
17
|
|
2025/07
|
19
|
22
|
26
|
27
|
17
|
20
|
30
|
44
|
35
|
15
|
12
|
29
|
41
|
43
|
35
|
37
|
34
|
25
|
33
|
34
|
23
|
20
|
21
|
25
|
23
|
36
|
36
|
30
|
21
|
41
|
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
*: primary pollution