Air Quality
Excellent
No health implications.
8
PM2.5
31
PM10
56
O3
0.7
CO
4
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Apr
61
Good
Wed
30 Apr
53
Good
Thu
1 May
69
Good
Fri
2 May
66
Good
Sat
3 May
57
Good
Sun
4 May
15
Excellent
Mon
5 May
17
Excellent
Air quality in the last 12 months (Chengxiang)
|
2025/02
|
40
|
13
|
12
|
59
|
51
|
26
|
16
|
51
|
32
|
35
|
41
|
142
|
65
|
59
|
47
|
69
|
71
|
43
|
35
|
11
|
9
|
20
|
10
|
50
|
56
|
62
|
83
|
82
|
|||
|
2025/01
|
58
|
50
|
36
|
40
|
38
|
51
|
63
|
49
|
52
|
47
|
34
|
43
|
44
|
45
|
84
|
59
|
51
|
34
|
43
|
46
|
63
|
42
|
37
|
20
|
27
|
32
|
18
|
44
|
61
|
32
|
30
|
|
2024/12
|
39
|
42
|
22
|
36
|
33
|
32
|
20
|
54
|
29
|
26
|
25
|
14
|
20
|
50
|
77
|
52
|
41
|
36
|
42
|
25
|
38
|
61
|
26
|
21
|
25
|
50
|
66
|
81
|
43
|
44
|
53
|
|
2024/11
|
12
|
14
|
27
|
29
|
42
|
37
|
23
|
22
|
21
|
30
|
18
|
18
|
17
|
11
|
13
|
13
|
14
|
17
|
12
|
8
|
11
|
26
|
31
|
23
|
17
|
16
|
31
|
21
|
33
|
37
|
|
|
2024/10
|
10
|
8
|
13
|
10
|
9
|
16
|
15
|
10
|
27
|
42
|
41
|
33
|
23
|
34
|
24
|
22
|
32
|
37
|
29
|
14
|
23
|
24
|
28
|
31
|
16
|
13
|
18
|
12
|
32
|
35
|
18
|
|
2024/09
|
35
|
35
|
24
|
18
|
22
|
13
|
16
|
20
|
16
|
39
|
52
|
40
|
18
|
16
|
20
|
23
|
19
|
23
|
19
|
21
|
21
|
9
|
8
|
21
|
21
|
18
|
15
|
19
|
22
|
13
|
|
|
2024/08
|
31
|
47
|
57
|
51
|
43
|
29
|
35
|
44
|
47
|
51
|
50
|
51
|
34
|
24
|
21
|
20
|
20
|
23
|
23
|
12
|
21
|
30
|
33
|
42
|
40
|
42
|
63
|
50
|
42
|
46
|
40
|
|
2024/07
|
28
|
24
|
24
|
27
|
31
|
25
|
23
|
24
|
21
|
24
|
29
|
27
|
31
|
30
|
31
|
32
|
27
|
24
|
24
|
28
|
33
|
29
|
18
|
15
|
7
|
9
|
12
|
30
|
20
|
24
|
23
|
|
2024/06
|
13
|
8
|
14
|
25
|
23
|
13
|
27
|
30
|
31
|
28
|
25
|
29
|
29
|
29
|
24
|
15
|
25
|
27
|
36
|
22
|
27
|
35
|
32
|
25
|
27
|
28
|
29
|
23
|
21
|
25
|
|
|
2024/05
|
20
|
21
|
27
|
30
|
36
|
43
|
44
|
43
|
36
|
31
|
46
|
43
|
19
|
24
|
34
|
38
|
30
|
37
|
27
|
14
|
8
|
11
|
28
|
44
|
52
|
30
|
23
|
24
|
24
|
33
|
35
|
|
2024/04
|
33
|
53
|
46
|
37
|
16
|
31
|
20
|
40
|
22
|
47
|
47
|
66
|
53
|
56
|
67
|
60
|
50
|
32
|
60
|
63
|
30
|
40
|
41
|
28
|
54
|
52
|
44
|
30
|
48
|
36
|
|
|
2024/03
|
16
|
31
|
41
|
54
|
65
|
32
|
40
|
62
|
61
|
53
|
61
|
42
|
59
|
54
|
37
|
52
|
71
|
44
|
41
|
50
|
52
|
61
|
54
|
45
|
37
|
37
|
30
|
61
|
46
|
57
|
34
|
|
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
Air quality source: CNEMC
*: primary pollution