Air Quality
Excellent
No health implications.
21
PM2.5
40
PM10
74
O3
0.5
CO
5
SO2
21
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Mar
88
Good
Sat
28 Mar
84
Good
Sun
29 Mar
82
Good
Mon
30 Mar
86
Good
Tue
31 Mar
82
Good
Wed
1 Apr
82
Good
Thu
2 Apr
18
Excellent
Chengjiang Air quality rank
Air quality in the last 12 months (Chengjiang)
|
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
|
|
|
2025/08
|
31
|
29
|
18
|
16
|
29
|
26
|
14
|
8
|
12
|
15
|
16
|
19
|
16
|
34
|
30
|
11
|
12
|
19
|
26
|
19
|
10
|
8
|
9
|
14
|
12
|
9
|
9
|
14
|
12
|
13
|
19
|
|
2025/07
|
13
|
8
|
12
|
15
|
17
|
16
|
20
|
11
|
18
|
17
|
22
|
25
|
34
|
24
|
31
|
31
|
25
|
29
|
18
|
23
|
18
|
11
|
10
|
11
|
11
|
13
|
16
|
22
|
36
|
30
|
16
|
|
2025/06
|
12
|
15
|
16
|
18
|
24
|
31
|
32
|
33
|
24
|
32
|
34
|
36
|
42
|
39
|
16
|
21
|
12
|
9
|
13
|
13
|
17
|
9
|
12
|
9
|
10
|
12
|
15
|
13
|
12
|
14
|
|
|
2025/05
|
35
|
24
|
21
|
16
|
22
|
26
|
26
|
31
|
43
|
34
|
19
|
26
|
28
|
28
|
24
|
22
|
29
|
22
|
34
|
24
|
32
|
30
|
51
|
32
|
18
|
14
|
13
|
13
|
9
|
11
|
11
|
|
2025/04
|
31
|
56
|
85
|
84
|
89
|
75
|
70
|
64
|
58
|
67
|
56
|
43
|
73
|
58
|
51
|
22
|
22
|
29
|
32
|
35
|
30
|
25
|
38
|
48
|
48
|
57
|
61
|
59
|
30
|
31
|
|
|
2025/03
|
40
|
43
|
48
|
45
|
53
|
48
|
36
|
53
|
45
|
37
|
52
|
61
|
60
|
65
|
55
|
39
|
33
|
20
|
33
|
46
|
65
|
65
|
54
|
43
|
41
|
46
|
49
|
88
|
108
|
73
|
63
|
|
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