Air Quality
Excellent
No health implications.
3
PM2.5
11
PM10
41
O3
0.7
CO
3
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Apr
35
Excellent
Fri
24 Apr
37
Excellent
Sat
25 Apr
39
Excellent
Sun
26 Apr
75
Good
Mon
27 Apr
77
Good
Tue
28 Apr
72
Good
Wed
29 Apr
40
Excellent
Air quality in the last 12 months (Chengxiang)
|
2026/03
|
40
|
92
|
22
|
26
|
21
|
33
|
42
|
35
|
34
|
40
|
43
|
43
|
42
|
39
|
35
|
32
|
42
|
55
|
31
|
42
|
31
|
38
|
42
|
30
|
47
|
36
|
33
|
31
|
46
|
60
|
53
|
|
2026/02
|
19
|
38
|
48
|
42
|
58
|
59
|
17
|
35
|
32
|
34
|
37
|
50
|
47
|
56
|
47
|
71
|
23
|
35
|
42
|
72
|
84
|
70
|
52
|
77
|
32
|
36
|
55
|
22
|
|||
|
2026/01
|
27
|
22
|
34
|
33
|
38
|
22
|
40
|
40
|
51
|
52
|
49
|
54
|
48
|
42
|
45
|
51
|
50
|
37
|
37
|
24
|
26
|
41
|
23
|
24
|
23
|
40
|
33
|
24
|
38
|
27
|
20
|
|
2025/12
|
39
|
38
|
49
|
39
|
28
|
29
|
31
|
35
|
45
|
32
|
39
|
50
|
35
|
30
|
36
|
39
|
37
|
59
|
54
|
48
|
80
|
25
|
34
|
45
|
22
|
34
|
26
|
25
|
28
|
36
|
37
|
|
2025/11
|
22
|
40
|
47
|
9
|
13
|
21
|
25
|
28
|
25
|
32
|
17
|
7
|
10
|
26
|
41
|
31
|
29
|
23
|
23
|
30
|
31
|
37
|
39
|
40
|
42
|
73
|
47
|
80
|
68
|
49
|
|
|
2025/10
|
31
|
21
|
25
|
27
|
38
|
42
|
26
|
26
|
29
|
26
|
25
|
30
|
40
|
36
|
22
|
25
|
27
|
25
|
18
|
17
|
14
|
14
|
24
|
22
|
24
|
37
|
38
|
21
|
25
|
29
|
25
|
|
2025/09
|
31
|
36
|
43
|
46
|
33
|
15
|
18
|
19
|
20
|
29
|
26
|
36
|
37
|
38
|
28
|
18
|
16
|
16
|
21
|
16
|
19
|
20
|
19
|
21
|
18
|
14
|
20
|
18
|
32
|
33
|
|
|
2025/08
|
32
|
30
|
29
|
21
|
18
|
30
|
41
|
51
|
42
|
29
|
24
|
32
|
25
|
24
|
13
|
13
|
16
|
23
|
24
|
25
|
20
|
31
|
44
|
35
|
19
|
14
|
13
|
16
|
13
|
15
|
21
|
|
2025/07
|
18
|
15
|
23
|
23
|
16
|
18
|
22
|
43
|
37
|
16
|
11
|
20
|
42
|
22
|
38
|
46
|
42
|
23
|
18
|
20
|
13
|
12
|
16
|
14
|
22
|
31
|
32
|
27
|
25
|
45
|
46
|
|
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
|
|
|
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