Air Quality
Excellent
No health implications.
3
PM2.5
7
PM10
42
O3
0.3
CO
3
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Aug
49
Excellent
Fri
21 Aug
51
Good
Sat
22 Aug
54
Good
Sun
23 Aug
56
Good
Mon
24 Aug
59
Good
Tue
25 Aug
62
Good
Wed
26 Aug
43
Excellent
Air quality in the last 12 months (Chenghai)
|
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
|
|
|
2025/08
|
26
|
25
|
20
|
12
|
13
|
28
|
40
|
40
|
25
|
15
|
17
|
25
|
34
|
15
|
23
|
28
|
22
|
17
|
16
|
30
|
32
|
37
|
29
|
21
|
29
|
25
|
23
|
25
|
26
|
18
|
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