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 Jun
Fri
19 Jun
Sat
20 Jun
Sun
21 Jun
Real-time AQI (Monitoring Station in Changhua)
彰化
373
PM2.5
11
PM10
62
O3
0.1
CO
2
SO2
8
NO2
线西
252
PM2.5
4
PM10
37
O3
0.1
CO
2
SO2
4
NO2
二林
231
PM2.5
13
PM10
39
O3
0.1
CO
2
SO2
2
NO2
大城
193
PM2.5
9
PM10
44
O3
0.0
CO
3
SO2
2
NO2
Air quality in the last 12 months (Changhua)
|
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
|
|
|
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
|
|
|
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