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
17 May
Mon
18 May
Tue
19 May
Real-time AQI (Monitoring Station in Changhua)
彰化
2910
PM2.5
27
PM10
65
O3
0.1
CO
5
SO2
8
NO2
线西
2916
PM2.5
25
PM10
42
O3
0.2
CO
4
SO2
10
NO2
二林
337
PM2.5
30
PM10
30
O3
0.2
CO
1
SO2
8
NO2
大城
3114
PM2.5
42
PM10
32
O3
0.1
CO
3
SO2
10
NO2
Air quality in the last 12 months (Changhua)
|
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
|
|
|
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
|
|
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