Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
PM2.5
PM10
O3
CO
SO2
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
22 Sep
Wed
23 Sep
Thu
24 Sep
Real-time AQI (Monitoring Station in Changhua)
彰化
3310
PM2.5
25
PM10
30
O3
0.3
CO
5
SO2
38
NO2
线西
3213
PM2.5
22
PM10
57
O3
0.2
CO
4
SO2
21
NO2
二林
6224 *
PM2.5
65
PM10
22
O3
0.6
CO
6
SO2
29
NO2
大城
6422 *
PM2.5
41
PM10
55
O3
0.2
CO
7
SO2
14
NO2
Air quality in the last 12 months (Changhua)
|
2026/08
|
31
|
36
|
39
|
24
|
25
|
25
|
36
|
34
|
21
|
28
|
49
|
46
|
38
|
28
|
25
|
26
|
28
|
25
|
21
|
16
|
22
|
26
|
20
|
19
|
20
|
24
|
33
|
36
|
32
|
23
|
21
|
|
2026/07
|
27
|
30
|
25
|
29
|
23
|
22
|
20
|
27
|
32
|
27
|
31
|
33
|
19
|
21
|
21
|
23
|
28
|
33
|
37
|
32
|
42
|
46
|
49
|
36
|
24
|
30
|
18
|
18
|
22
|
26
|
35
|
|
2026/06
|
36
|
42
|
40
|
30
|
35
|
43
|
29
|
29
|
32
|
34
|
39
|
35
|
35
|
24
|
21
|
22
|
21
|
17
|
20
|
25
|
38
|
33
|
33
|
37
|
26
|
25
|
31
|
33
|
32
|
20
|
|
|
2026/05
|
42
|
45
|
38
|
33
|
33
|
34
|
32
|
38
|
34
|
31
|
35
|
34
|
27
|
25
|
28
|
33
|
35
|
31
|
34
|
36
|
37
|
45
|
40
|
39
|
40
|
39
|
40
|
31
|
45
|
50
|
45
|
|
2026/04
|
33
|
38
|
38
|
32
|
37
|
32
|
39
|
45
|
47
|
37
|
30
|
26
|
38
|
27
|
27
|
33
|
40
|
36
|
36
|
39
|
40
|
42
|
35
|
27
|
38
|
43
|
43
|
46
|
30
|
28
|
|
|
2026/03
|
35
|
46
|
27
|
34
|
28
|
41
|
48
|
35
|
39
|
43
|
40
|
44
|
56
|
43
|
44
|
33
|
39
|
48
|
29
|
40
|
37
|
38
|
32
|
30
|
39
|
35
|
40
|
37
|
51
|
42
|
41
|
|
2026/02
|
20
|
38
|
51
|
33
|
37
|
43
|
26
|
45
|
40
|
37
|
44
|
56
|
48
|
52
|
33
|
38
|
33
|
47
|
51
|
71
|
58
|
67
|
98
|
72
|
31
|
45
|
54
|
26
|
|||
|
2026/01
|
23
|
29
|
40
|
31
|
50
|
35
|
42
|
48
|
56
|
56
|
63
|
58
|
59
|
48
|
46
|
50
|
51
|
20
|
33
|
30
|
43
|
51
|
43
|
43
|
39
|
32
|
24
|
28
|
36
|
37
|
16
|
|
2025/12
|
44
|
42
|
49
|
37
|
31
|
30
|
33
|
43
|
40
|
29
|
37
|
49
|
50
|
40
|
51
|
42
|
49
|
56
|
50
|
48
|
68
|
27
|
33
|
50
|
23
|
35
|
24
|
28
|
31
|
43
|
35
|
|
2025/11
|
30
|
53
|
44
|
17
|
20
|
22
|
37
|
35
|
34
|
42
|
22
|
9
|
12
|
34
|
43
|
32
|
34
|
27
|
29
|
42
|
45
|
50
|
43
|
41
|
51
|
76
|
58
|
103
|
82
|
55
|
|
|
2025/10
|
23
|
16
|
19
|
22
|
27
|
31
|
24
|
26
|
23
|
24
|
24
|
21
|
20
|
34
|
18
|
29
|
31
|
34
|
28
|
30
|
20
|
24
|
30
|
32
|
36
|
48
|
44
|
25
|
26
|
34
|
38
|
|
2025/09
|
26
|
36
|
32
|
34
|
24
|
21
|
18
|
20
|
20
|
29
|
25
|
27
|
36
|
29
|
24
|
25
|
22
|
23
|
18
|
22
|
25
|
25
|
31
|
31
|
23
|
19
|
20
|
20
|
25
|
25
|
|
|
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