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
15 Jun
Tue
16 Jun
Wed
17 Jun
Thu
18 Jun
Real-time AQI (Monitoring Station in Changhua)
彰化
159
PM2.5
9
PM10
28
O3
0.1
CO
0
SO2
17
NO2
线西
124
PM2.5
9
PM10
31
O3
0.1
CO
1
SO2
8
NO2
二林
145
PM2.5
10
PM10
28
O3
0.1
CO
2
SO2
4
NO2
大城
150
PM2.5
7
PM10
33
O3
0.1
CO
3
SO2
6
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