Air Quality
Excellent
No health implications.
3
PM2.5
14
PM10
86
O3
0.4
CO
5
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
5 Sep
84
Good
Sun
6 Sep
66
Good
Mon
7 Sep
67
Good
Tue
8 Sep
38
Excellent
Wed
9 Sep
37
Excellent
Thu
10 Sep
40
Excellent
Fri
11 Sep
40
Excellent
Air quality in the last 12 months (Chengjiang)
|
2026/08
|
16
|
15
|
15
|
28
|
34
|
30
|
23
|
30
|
32
|
27
|
35
|
32
|
36
|
42
|
36
|
30
|
21
|
19
|
22
|
26
|
28
|
30
|
42
|
38
|
37
|
20
|
23
|
31
|
21
|
23
|
31
|
|
2026/07
|
21
|
16
|
17
|
19
|
28
|
17
|
21
|
23
|
27
|
27
|
21
|
21
|
27
|
30
|
28
|
19
|
19
|
24
|
36
|
48
|
41
|
36
|
27
|
28
|
22
|
21
|
25
|
19
|
18
|
19
|
21
|
|
2026/06
|
25
|
23
|
23
|
31
|
33
|
27
|
25
|
25
|
28
|
30
|
26
|
18
|
18
|
20
|
21
|
17
|
16
|
17
|
18
|
19
|
17
|
18
|
18
|
19
|
21
|
19
|
18
|
15
|
21
|
24
|
|
|
2026/05
|
27
|
27
|
22
|
28
|
31
|
30
|
38
|
34
|
33
|
22
|
22
|
23
|
25
|
30
|
33
|
39
|
37
|
38
|
38
|
40
|
36
|
31
|
32
|
27
|
29
|
40
|
45
|
38
|
27
|
24
|
26
|
|
2026/04
|
41
|
42
|
39
|
40
|
39
|
40
|
39
|
48
|
38
|
35
|
39
|
42
|
47
|
59
|
70
|
63
|
60
|
56
|
58
|
43
|
47
|
53
|
52
|
57
|
41
|
44
|
42
|
37
|
31
|
31
|
|
|
2026/03
|
49
|
53
|
53
|
45
|
63
|
66
|
64
|
66
|
27
|
33
|
47
|
45
|
41
|
34
|
30
|
31
|
39
|
33
|
42
|
38
|
53
|
51
|
30
|
45
|
73
|
50
|
42
|
63
|
45
|
35
|
40
|
|
2026/02
|
30
|
31
|
34
|
39
|
39
|
40
|
41
|
42
|
31
|
30
|
29
|
26
|
26
|
33
|
38
|
50
|
69
|
49
|
34
|
29
|
22
|
25
|
34
|
39
|
42
|
36
|
31
|
42
|
|||
|
2026/01
|
38
|
29
|
21
|
19
|
28
|
28
|
31
|
29
|
29
|
25
|
44
|
31
|
50
|
33
|
51
|
26
|
34
|
34
|
32
|
28
|
24
|
28
|
29
|
31
|
27
|
35
|
32
|
35
|
32
|
33
|
41
|
|
2025/12
|
42
|
39
|
54
|
34
|
31
|
31
|
38
|
48
|
29
|
38
|
40
|
35
|
61
|
51
|
26
|
29
|
43
|
29
|
19
|
30
|
40
|
24
|
28
|
25
|
47
|
42
|
32
|
32
|
27
|
28
|
27
|
|
2025/11
|
25
|
10
|
8
|
13
|
14
|
12
|
17
|
26
|
11
|
11
|
14
|
19
|
25
|
24
|
28
|
34
|
28
|
23
|
18
|
32
|
42
|
34
|
27
|
41
|
40
|
54
|
45
|
49
|
46
|
44
|
|
|
2025/10
|
8
|
11
|
13
|
13
|
15
|
21
|
8
|
8
|
12
|
15
|
19
|
19
|
23
|
29
|
24
|
16
|
15
|
21
|
24
|
29
|
15
|
18
|
18
|
31
|
31
|
24
|
25
|
28
|
23
|
28
|
37
|
|
2025/09
|
21
|
21
|
16
|
16
|
16
|
20
|
25
|
24
|
17
|
18
|
15
|
13
|
12
|
9
|
13
|
15
|
17
|
22
|
19
|
24
|
18
|
20
|
13
|
11
|
23
|
8
|
9
|
14
|
8
|
7
|
|
|
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