Air Quality
Excellent
No health implications.
22
PM2.5
36
PM10
42
O3
0.7
CO
4
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Jul
40
Excellent
Tue
15 Jul
58
Good
Wed
16 Jul
50
Excellent
Thu
17 Jul
52
Good
Fri
18 Jul
53
Good
Sat
19 Jul
49
Excellent
Sun
20 Jul
46
Excellent
Air quality in the last 12 months (Chengxiang)
|
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
|
|
2025/04
|
17
|
33
|
44
|
43
|
44
|
46
|
50
|
55
|
78
|
56
|
53
|
38
|
108
|
88
|
76
|
64
|
63
|
61
|
54
|
25
|
43
|
52
|
41
|
26
|
10
|
11
|
26
|
47
|
40
|
41
|
|
|
2025/03
|
86
|
49
|
38
|
40
|
12
|
11
|
27
|
44
|
33
|
35
|
53
|
68
|
41
|
28
|
35
|
16
|
48
|
38
|
42
|
45
|
41
|
43
|
60
|
82
|
87
|
60
|
48
|
52
|
21
|
8
|
10
|
|
2025/02
|
40
|
13
|
12
|
59
|
51
|
26
|
16
|
51
|
32
|
35
|
41
|
142
|
65
|
59
|
47
|
69
|
71
|
43
|
35
|
11
|
9
|
20
|
10
|
50
|
56
|
62
|
83
|
82
|
|||
|
2025/01
|
58
|
50
|
36
|
40
|
38
|
51
|
63
|
49
|
52
|
47
|
34
|
43
|
44
|
45
|
84
|
59
|
51
|
34
|
43
|
46
|
63
|
42
|
37
|
20
|
27
|
32
|
18
|
44
|
61
|
32
|
30
|
|
2024/12
|
39
|
42
|
22
|
36
|
33
|
32
|
20
|
54
|
29
|
26
|
25
|
14
|
20
|
50
|
77
|
52
|
41
|
36
|
42
|
25
|
38
|
61
|
26
|
21
|
25
|
50
|
66
|
81
|
43
|
44
|
53
|
|
2024/11
|
12
|
14
|
27
|
29
|
42
|
37
|
23
|
22
|
21
|
30
|
18
|
18
|
17
|
11
|
13
|
13
|
14
|
17
|
12
|
8
|
11
|
26
|
31
|
23
|
17
|
16
|
31
|
21
|
33
|
37
|
|
|
2024/10
|
10
|
8
|
13
|
10
|
9
|
16
|
15
|
10
|
27
|
42
|
41
|
33
|
23
|
34
|
24
|
22
|
32
|
37
|
29
|
14
|
23
|
24
|
28
|
31
|
16
|
13
|
18
|
12
|
32
|
35
|
18
|
|
2024/09
|
35
|
35
|
24
|
18
|
22
|
13
|
16
|
20
|
16
|
39
|
52
|
40
|
18
|
16
|
20
|
23
|
19
|
23
|
19
|
21
|
21
|
9
|
8
|
21
|
21
|
18
|
15
|
19
|
22
|
13
|
|
|
2024/08
|
31
|
47
|
57
|
51
|
43
|
29
|
35
|
44
|
47
|
51
|
50
|
51
|
34
|
24
|
21
|
20
|
20
|
23
|
23
|
12
|
21
|
30
|
33
|
42
|
40
|
42
|
63
|
50
|
42
|
46
|
40
|
|
2024/07
|
28
|
24
|
24
|
27
|
31
|
25
|
23
|
24
|
21
|
24
|
29
|
27
|
31
|
30
|
31
|
32
|
27
|
24
|
24
|
28
|
33
|
29
|
18
|
15
|
7
|
9
|
12
|
30
|
20
|
24
|
23
|
|
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