Air Quality
Excellent
No health implications.
7
PM2.5
14
PM10
73
O3
0.5
CO
4
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
56
Good
Fri
15 May
44
Excellent
Sat
16 May
43
Excellent
Sun
17 May
43
Excellent
Mon
18 May
54
Good
Tue
19 May
50
Excellent
Wed
20 May
22
Excellent
Air quality in the last 12 months (Chengxiang)
|
2026/04
|
32
|
34
|
26
|
25
|
35
|
52
|
29
|
33
|
39
|
47
|
41
|
32
|
38
|
41
|
37
|
30
|
37
|
35
|
35
|
50
|
38
|
36
|
39
|
22
|
36
|
42
|
52
|
60
|
33
|
24
|
|
|
2026/03
|
40
|
92
|
22
|
26
|
21
|
33
|
42
|
35
|
34
|
40
|
43
|
43
|
42
|
39
|
35
|
32
|
42
|
55
|
31
|
42
|
31
|
38
|
42
|
30
|
47
|
36
|
33
|
31
|
46
|
60
|
53
|
|
2026/02
|
19
|
38
|
48
|
42
|
58
|
59
|
17
|
35
|
32
|
34
|
37
|
50
|
47
|
56
|
47
|
71
|
23
|
35
|
42
|
72
|
84
|
70
|
52
|
77
|
32
|
36
|
55
|
22
|
|||
|
2026/01
|
27
|
22
|
34
|
33
|
38
|
22
|
40
|
40
|
51
|
52
|
49
|
54
|
48
|
42
|
45
|
51
|
50
|
37
|
37
|
24
|
26
|
41
|
23
|
24
|
23
|
40
|
33
|
24
|
38
|
27
|
20
|
|
2025/12
|
39
|
38
|
49
|
39
|
28
|
29
|
31
|
35
|
45
|
32
|
39
|
50
|
35
|
30
|
36
|
39
|
37
|
59
|
54
|
48
|
80
|
25
|
34
|
45
|
22
|
34
|
26
|
25
|
28
|
36
|
37
|
|
2025/11
|
22
|
40
|
47
|
9
|
13
|
21
|
25
|
28
|
25
|
32
|
17
|
7
|
10
|
26
|
41
|
31
|
29
|
23
|
23
|
30
|
31
|
37
|
39
|
40
|
42
|
73
|
47
|
80
|
68
|
49
|
|
|
2025/10
|
31
|
21
|
25
|
27
|
38
|
42
|
26
|
26
|
29
|
26
|
25
|
30
|
40
|
36
|
22
|
25
|
27
|
25
|
18
|
17
|
14
|
14
|
24
|
22
|
24
|
37
|
38
|
21
|
25
|
29
|
25
|
|
2025/09
|
31
|
36
|
43
|
46
|
33
|
15
|
18
|
19
|
20
|
29
|
26
|
36
|
37
|
38
|
28
|
18
|
16
|
16
|
21
|
16
|
19
|
20
|
19
|
21
|
18
|
14
|
20
|
18
|
32
|
33
|
|
|
2025/08
|
32
|
30
|
29
|
21
|
18
|
30
|
41
|
51
|
42
|
29
|
24
|
32
|
25
|
24
|
13
|
13
|
16
|
23
|
24
|
25
|
20
|
31
|
44
|
35
|
19
|
14
|
13
|
16
|
13
|
15
|
21
|
|
2025/07
|
18
|
15
|
23
|
23
|
16
|
18
|
22
|
43
|
37
|
16
|
11
|
20
|
42
|
22
|
38
|
46
|
42
|
23
|
18
|
20
|
13
|
12
|
16
|
14
|
22
|
31
|
32
|
27
|
25
|
45
|
46
|
|
2025/06
|
49
|
49
|
16
|
21
|
29
|
33
|
35
|
41
|
33
|
31
|
24
|
14
|
16
|
18
|
22
|
30
|
28
|
32
|
21
|
24
|
22
|
32
|
41
|
32
|
31
|
25
|
24
|
26
|
28
|
19
|
|
|
2025/05
|
66
|
51
|
55
|
51
|
48
|
48
|
52
|
39
|
35
|
27
|
28
|
32
|
31
|
43
|
43
|
37
|
26
|
30
|
35
|
38
|
39
|
43
|
45
|
18
|
51
|
34
|
28
|
16
|
13
|
26
|
37
|
|
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