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
5 Nov
Wed
6 Nov
Thu
7 Nov
Fri
8 Nov
Real-time AQI (Monitoring Station in Changhua)
彰化
4314
PM2.5
30
PM10
109
O3
0.2
CO
2
SO2
21
NO2
线西
7822
PM2.5
57
PM10
121 *
O3
0.3
CO
6
SO2
12
NO2
大城
7820
PM2.5
48
PM10
116 *
O3
0.2
CO
2
SO2
4
NO2
Air quality in the last 12 months (Changhua)
|
2024/09
|
29
|
29
|
27
|
26
|
23
|
20
|
20
|
14
|
22
|
42
|
52
|
34
|
18
|
22
|
29
|
22
|
28
|
28
|
23
|
21
|
25
|
10
|
12
|
16
|
25
|
15
|
19
|
25
|
25
|
20
|
|
|
2024/08
|
28
|
43
|
43
|
35
|
37
|
21
|
27
|
38
|
43
|
47
|
48
|
50
|
46
|
36
|
29
|
13
|
21
|
19
|
16
|
11
|
21
|
27
|
37
|
42
|
35
|
38
|
48
|
44
|
40
|
33
|
33
|
|
2024/07
|
21
|
19
|
19
|
21
|
25
|
20
|
17
|
17
|
16
|
18
|
26
|
29
|
24
|
23
|
21
|
18
|
21
|
19
|
25
|
25
|
21
|
20
|
25
|
19
|
17
|
18
|
21
|
28
|
23
|
18
|
15
|
|
2024/06
|
11
|
8
|
18
|
32
|
31
|
19
|
20
|
14
|
22
|
15
|
14
|
28
|
28
|
29
|
22
|
17
|
18
|
16
|
17
|
18
|
26
|
32
|
25
|
17
|
18
|
21
|
29
|
17
|
18
|
20
|
|
|
2024/05
|
21
|
22
|
26
|
34
|
40
|
47
|
33
|
41
|
29
|
31
|
32
|
34
|
32
|
30
|
40
|
42
|
35
|
38
|
25
|
22
|
12
|
14
|
27
|
32
|
24
|
25
|
17
|
24
|
26
|
29
|
36
|
|
2024/04
|
35
|
56
|
39
|
32
|
26
|
34
|
17
|
36
|
26
|
49
|
46
|
41
|
27
|
31
|
54
|
33
|
37
|
38
|
84
|
73
|
39
|
31
|
34
|
28
|
44
|
44
|
35
|
20
|
37
|
22
|
|
|
2024/03
|
19
|
41
|
46
|
50
|
51
|
25
|
46
|
61
|
59
|
47
|
49
|
37
|
58
|
62
|
46
|
48
|
74
|
48
|
48
|
64
|
59
|
68
|
61
|
34
|
27
|
41
|
30
|
53
|
47
|
61
|
40
|
|
2024/02
|
48
|
26
|
26
|
23
|
26
|
29
|
22
|
33
|
67
|
120
|
61
|
55
|
67
|
102
|
80
|
33
|
36
|
82
|
58
|
43
|
28
|
20
|
22
|
27
|
31
|
43
|
34
|
44
|
52
|
||
|
2024/01
|
71
|
43
|
59
|
48
|
56
|
61
|
97
|
49
|
45
|
65
|
96
|
95
|
54
|
29
|
78
|
30
|
34
|
48
|
38
|
34
|
25
|
24
|
24
|
30
|
41
|
56
|
72
|
81
|
68
|
37
|
40
|
|
2023/12
|
42
|
39
|
37
|
26
|
33
|
42
|
50
|
54
|
62
|
51
|
59
|
29
|
28
|
37
|
64
|
43
|
49
|
45
|
38
|
30
|
51
|
46
|
36
|
39
|
54
|
52
|
43
|
33
|
32
|
50
|
86
|
|
2023/11
|
32
|
31
|
32
|
30
|
37
|
52
|
39
|
43
|
44
|
34
|
23
|
25
|
35
|
36
|
32
|
30
|
51
|
63
|
49
|
48
|
38
|
36
|
45
|
77
|
33
|
27
|
43
|
53
|
54
|
59
|
|
|
2023/10
|
31
|
44
|
41
|
49
|
39
|
25
|
22
|
23
|
28
|
31
|
42
|
36
|
34
|
37
|
50
|
61
|
54
|
42
|
42
|
51
|
33
|
29
|
28
|
28
|
25
|
22
|
28
|
33
|
34
|
34
|
33
|
|
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