Air Quality
Excellent
No health implications.
20
PM2.5
24
PM10
79
O3
0.6
CO
5
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Sep
60
Good
Tue
22 Sep
59
Good
Wed
23 Sep
84
Good
Thu
24 Sep
61
Good
Fri
25 Sep
59
Good
Sat
26 Sep
25
Excellent
Sun
27 Sep
30
Excellent
Air quality in the last 12 months (Chenghai)
|
2026/08
|
16
|
14
|
27
|
47
|
39
|
42
|
42
|
41
|
34
|
25
|
44
|
43
|
35
|
23
|
19
|
32
|
37
|
23
|
24
|
17
|
23
|
23
|
29
|
26
|
23
|
26
|
25
|
30
|
37
|
30
|
20
|
|
2026/07
|
21
|
22
|
20
|
17
|
17
|
16
|
18
|
21
|
26
|
32
|
43
|
39
|
18
|
17
|
22
|
19
|
21
|
28
|
31
|
26
|
38
|
43
|
43
|
43
|
38
|
24
|
19
|
18
|
22
|
32
|
29
|
|
2026/06
|
51
|
46
|
33
|
32
|
35
|
38
|
26
|
22
|
25
|
29
|
35
|
38
|
29
|
16
|
19
|
17
|
17
|
17
|
24
|
23
|
28
|
30
|
29
|
36
|
37
|
28
|
22
|
26
|
20
|
19
|
|
|
2026/05
|
37
|
43
|
42
|
25
|
31
|
39
|
39
|
47
|
38
|
40
|
54
|
66
|
41
|
20
|
24
|
29
|
35
|
34
|
35
|
30
|
23
|
33
|
33
|
32
|
27
|
27
|
30
|
36
|
37
|
52
|
56
|
|
2026/04
|
31
|
31
|
44
|
51
|
28
|
38
|
40
|
38
|
43
|
36
|
32
|
30
|
29
|
25
|
32
|
36
|
37
|
48
|
41
|
42
|
34
|
34
|
26
|
18
|
29
|
44
|
50
|
39
|
33
|
24
|
|
|
2026/03
|
20
|
55
|
33
|
38
|
35
|
29
|
46
|
36
|
37
|
36
|
44
|
52
|
43
|
44
|
41
|
40
|
37
|
46
|
49
|
34
|
37
|
41
|
41
|
40
|
52
|
37
|
38
|
32
|
39
|
48
|
42
|
|
2026/02
|
31
|
35
|
46
|
50
|
58
|
51
|
35
|
41
|
37
|
37
|
45
|
44
|
48
|
46
|
40
|
39
|
37
|
39
|
39
|
54
|
54
|
61
|
60
|
80
|
43
|
24
|
43
|
11
|
|||
|
2026/01
|
40
|
25
|
35
|
51
|
49
|
27
|
42
|
50
|
53
|
53
|
58
|
59
|
67
|
51
|
60
|
62
|
68
|
60
|
61
|
35
|
39
|
44
|
46
|
46
|
40
|
58
|
62
|
30
|
40
|
45
|
30
|
|
2025/12
|
32
|
45
|
44
|
48
|
42
|
40
|
49
|
51
|
49
|
41
|
52
|
47
|
44
|
32
|
45
|
52
|
60
|
54
|
62
|
52
|
82
|
40
|
41
|
46
|
30
|
29
|
36
|
43
|
43
|
53
|
41
|
|
2025/11
|
28
|
40
|
45
|
23
|
22
|
31
|
30
|
36
|
46
|
28
|
25
|
18
|
20
|
28
|
41
|
44
|
43
|
36
|
23
|
39
|
39
|
52
|
54
|
58
|
43
|
60
|
52
|
64
|
74
|
56
|
|
|
2025/10
|
22
|
22
|
28
|
33
|
21
|
22
|
36
|
33
|
34
|
28
|
29
|
26
|
22
|
23
|
22
|
39
|
38
|
39
|
32
|
24
|
15
|
17
|
24
|
33
|
35
|
48
|
46
|
44
|
28
|
39
|
42
|
|
2025/09
|
28
|
37
|
39
|
29
|
22
|
28
|
18
|
18
|
20
|
21
|
24
|
25
|
22
|
23
|
21
|
27
|
23
|
23
|
14
|
17
|
20
|
23
|
25
|
24
|
26
|
27
|
26
|
25
|
32
|
33
|
|
|
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