Air Quality
Excellent
No health implications.
15
PM2.5
25
PM10
35
O3
0.5
CO
6
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Jun
49
Excellent
Tue
17 Jun
53
Good
Wed
18 Jun
49
Excellent
Thu
19 Jun
35
Excellent
Fri
20 Jun
35
Excellent
Sat
21 Jun
32
Excellent
Sun
22 Jun
29
Excellent
Air quality in the last 12 months (Chengjiang)
|
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
|
|
2025/02
|
44
|
48
|
28
|
40
|
49
|
47
|
32
|
39
|
45
|
34
|
39
|
46
|
54
|
54
|
57
|
57
|
42
|
40
|
42
|
49
|
58
|
49
|
53
|
27
|
29
|
24
|
28
|
38
|
|||
|
2025/01
|
31
|
35
|
45
|
38
|
36
|
49
|
38
|
36
|
43
|
27
|
23
|
44
|
35
|
44
|
78
|
71
|
48
|
35
|
64
|
44
|
45
|
38
|
32
|
23
|
25
|
29
|
42
|
52
|
72
|
32
|
31
|
|
2024/12
|
20
|
22
|
20
|
19
|
19
|
19
|
22
|
30
|
16
|
21
|
30
|
24
|
32
|
38
|
38
|
34
|
23
|
30
|
39
|
31
|
32
|
30
|
30
|
33
|
34
|
40
|
43
|
36
|
32
|
24
|
41
|
|
2024/11
|
28
|
33
|
44
|
42
|
43
|
49
|
32
|
26
|
22
|
30
|
23
|
20
|
20
|
25
|
26
|
26
|
31
|
30
|
33
|
32
|
18
|
25
|
20
|
19
|
20
|
32
|
19
|
25
|
22
|
18
|
|
|
2024/10
|
16
|
18
|
29
|
25
|
20
|
28
|
39
|
40
|
27
|
16
|
21
|
22
|
22
|
25
|
24
|
16
|
15
|
26
|
36
|
23
|
18
|
25
|
27
|
32
|
27
|
35
|
45
|
49
|
48
|
37
|
28
|
|
2024/09
|
24
|
22
|
26
|
18
|
18
|
31
|
28
|
10
|
10
|
10
|
14
|
13
|
26
|
29
|
32
|
24
|
20
|
22
|
24
|
31
|
27
|
17
|
22
|
39
|
37
|
36
|
28
|
20
|
20
|
22
|
|
|
2024/08
|
37
|
28
|
19
|
16
|
17
|
13
|
14
|
13
|
12
|
17
|
33
|
47
|
53
|
41
|
34
|
33
|
34
|
38
|
31
|
41
|
32
|
19
|
16
|
19
|
20
|
14
|
19
|
24
|
24
|
34
|
29
|
|
2024/07
|
11
|
18
|
14
|
9
|
15
|
15
|
12
|
13
|
13
|
13
|
10
|
13
|
13
|
14
|
16
|
14
|
17
|
15
|
15
|
16
|
12
|
11
|
18
|
23
|
17
|
21
|
26
|
24
|
22
|
14
|
20
|
|
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
|
|
|
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