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 Dec
Sun
28 Dec
Mon
29 Dec
Tue
30 Dec
Real-time AQI (Monitoring Station in Changhua)
彰化
186
PM2.5
21
PM10
68
O3
0.2
CO
2
SO2
14
NO2
线西
257
PM2.5
19
PM10
74
O3
0.3
CO
8
SO2
10
NO2
二林
259
PM2.5
25
PM10
80
O3
0.1
CO
5
SO2
4
NO2
大城
268
PM2.5
21
PM10
84
O3
0.0
CO
3
SO2
2
NO2
Air quality in the last 12 months (Changhua)
|
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
|
|
|
2025/08
|
34
|
31
|
33
|
18
|
19
|
30
|
41
|
46
|
29
|
20
|
23
|
24
|
30
|
28
|
20
|
22
|
24
|
17
|
22
|
32
|
33
|
32
|
26
|
23
|
20
|
16
|
15
|
17
|
17
|
17
|
17
|
|
2025/07
|
19
|
21
|
26
|
27
|
17
|
20
|
28
|
44
|
34
|
15
|
12
|
27
|
40
|
42
|
36
|
38
|
34
|
24
|
32
|
33
|
21
|
19
|
21
|
24
|
22
|
34
|
35
|
31
|
20
|
40
|
46
|
|
2025/06
|
46
|
37
|
17
|
26
|
29
|
23
|
19
|
24
|
22
|
23
|
20
|
24
|
27
|
28
|
32
|
29
|
26
|
28
|
23
|
20
|
20
|
25
|
30
|
30
|
21
|
17
|
17
|
23
|
17
|
15
|
|
|
2025/05
|
52
|
54
|
48
|
35
|
42
|
40
|
46
|
52
|
46
|
31
|
29
|
38
|
31
|
30
|
25
|
22
|
21
|
17
|
25
|
32
|
23
|
37
|
43
|
20
|
51
|
40
|
26
|
20
|
13
|
36
|
44
|
|
2025/04
|
22
|
36
|
43
|
42
|
49
|
47
|
53
|
56
|
50
|
44
|
37
|
19
|
112
|
101
|
82
|
69
|
65
|
51
|
47
|
31
|
41
|
41
|
33
|
24
|
20
|
27
|
31
|
44
|
32
|
36
|
|
|
2025/03
|
62
|
34
|
25
|
21
|
13
|
16
|
36
|
43
|
28
|
29
|
43
|
36
|
30
|
28
|
34
|
26
|
50
|
47
|
46
|
47
|
47
|
47
|
62
|
70
|
55
|
35
|
47
|
52
|
52
|
19
|
15
|
|
2025/02
|
37
|
16
|
23
|
68
|
55
|
34
|
26
|
49
|
33
|
31
|
40
|
66
|
73
|
51
|
42
|
62
|
68
|
38
|
37
|
22
|
20
|
33
|
18
|
65
|
60
|
54
|
63
|
78
|
|||
|
2025/01
|
50
|
36
|
34
|
31
|
36
|
49
|
65
|
45
|
51
|
42
|
34
|
46
|
44
|
42
|
79
|
53
|
54
|
41
|
44
|
51
|
81
|
49
|
44
|
19
|
33
|
35
|
19
|
44
|
49
|
32
|
38
|
|
2024/12
|
38
|
45
|
32
|
33
|
28
|
31
|
24
|
62
|
26
|
21
|
26
|
20
|
27
|
59
|
74
|
49
|
38
|
43
|
44
|
20
|
42
|
57
|
21
|
20
|
19
|
46
|
65
|
74
|
37
|
39
|
48
|
|
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