Air Quality
Excellent
No health implications.
16
PM2.5
33
PM10
20
O3
0.7
CO
4
SO2
26
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Oct
45
Excellent
Thu
15 Oct
47
Excellent
Fri
16 Oct
47
Excellent
Sat
17 Oct
46
Excellent
Sun
18 Oct
39
Excellent
Mon
19 Oct
40
Excellent
Tue
20 Oct
39
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