Air Quality
Excellent
No health implications.
11
PM2.5
24
PM10
46
O3
0.6
CO
12
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
27 Jul
50
Excellent
Sun
28 Jul
41
Excellent
Mon
29 Jul
40
Excellent
Tue
30 Jul
35
Excellent
Wed
31 Jul
32
Excellent
Thu
1 Aug
36
Excellent
Fri
2 Aug
33
Excellent
Air quality in the last 12 months (Chengjiang)
|
2024/06
|
33
|
23
|
30
|
28
|
16
|
15
|
15
|
18
|
16
|
11
|
17
|
21
|
11
|
17
|
25
|
15
|
25
|
25
|
30
|
34
|
21
|
21
|
17
|
17
|
18
|
12
|
12
|
11
|
12
|
13
|
|
|
2024/05
|
54
|
47
|
29
|
50
|
45
|
35
|
34
|
38
|
24
|
21
|
25
|
31
|
22
|
31
|
26
|
17
|
29
|
31
|
26
|
20
|
31
|
33
|
39
|
29
|
21
|
10
|
12
|
18
|
19
|
28
|
21
|
|
2024/04
|
31
|
41
|
55
|
53
|
54
|
72
|
61
|
58
|
60
|
68
|
74
|
76
|
62
|
47
|
55
|
74
|
83
|
52
|
43
|
38
|
37
|
45
|
50
|
48
|
42
|
45
|
51
|
59
|
49
|
53
|
|
|
2024/03
|
43
|
50
|
38
|
37
|
26
|
30
|
36
|
59
|
52
|
51
|
35
|
66
|
58
|
54
|
56
|
56
|
75
|
53
|
54
|
60
|
54
|
37
|
25
|
32
|
31
|
45
|
52
|
49
|
48
|
62
|
59
|
|
2024/02
|
33
|
45
|
54
|
31
|
40
|
32
|
42
|
44
|
51
|
61
|
64
|
41
|
37
|
28
|
36
|
43
|
30
|
32
|
49
|
54
|
46
|
51
|
60
|
52
|
48
|
39
|
39
|
39
|
37
|
||
|
2024/01
|
32
|
28
|
47
|
32
|
24
|
33
|
30
|
29
|
34
|
41
|
38
|
37
|
40
|
39
|
38
|
21
|
22
|
25
|
28
|
36
|
33
|
24
|
40
|
40
|
31
|
21
|
31
|
29
|
28
|
28
|
25
|
|
2023/12
|
48
|
21
|
17
|
21
|
19
|
30
|
35
|
22
|
18
|
20
|
22
|
26
|
15
|
18
|
22
|
25
|
19
|
20
|
22
|
54
|
46
|
60
|
53
|
55
|
55
|
37
|
34
|
31
|
28
|
34
|
32
|
|
2023/11
|
38
|
25
|
25
|
27
|
25
|
37
|
28
|
21
|
24
|
28
|
26
|
30
|
34
|
20
|
18
|
29
|
48
|
45
|
42
|
48
|
32
|
40
|
43
|
42
|
26
|
41
|
50
|
54
|
43
|
51
|
|
|
2023/10
|
25
|
17
|
18
|
19
|
20
|
19
|
14
|
18
|
24
|
28
|
31
|
29
|
21
|
18
|
24
|
30
|
28
|
25
|
32
|
33
|
37
|
36
|
30
|
29
|
26
|
22
|
25
|
25
|
36
|
35
|
40
|
|
2023/09
|
42
|
35
|
37
|
34
|
28
|
32
|
35
|
43
|
28
|
27
|
30
|
26
|
30
|
36
|
42
|
37
|
33
|
24
|
19
|
21
|
20
|
24
|
20
|
24
|
26
|
27
|
19
|
14
|
16
|
22
|
|
|
2023/08
|
19
|
23
|
24
|
19
|
22
|
25
|
18
|
20
|
19
|
24
|
25
|
24
|
29
|
33
|
31
|
25
|
29
|
35
|
31
|
36
|
34
|
30
|
22
|
26
|
14
|
16
|
21
|
30
|
32
|
32
|
33
|
|
2023/07
|
25
|
23
|
22
|
23
|
27
|
14
|
16
|
18
|
17
|
14
|
15
|
15
|
14
|
21
|
35
|
33
|
43
|
37
|
26
|
21
|
26
|
21
|
23
|
26
|
20
|
22
|
23
|
22
|
23
|
30
|
31
|
|
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