Air Quality
Excellent
No health implications.
6
PM2.5
9
PM10
23
O3
0.6
CO
2
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 Aug
50
Excellent
Fri
15 Aug
58
Good
Sat
16 Aug
56
Good
Sun
17 Aug
57
Good
Mon
18 Aug
56
Good
Tue
19 Aug
56
Good
Wed
20 Aug
35
Excellent
Air quality in the last 12 months (Chenghai)
|
2025/06
|
40
|
32
|
21
|
23
|
34
|
31
|
35
|
26
|
23
|
20
|
25
|
27
|
19
|
32
|
30
|
18
|
20
|
26
|
15
|
16
|
16
|
17
|
23
|
19
|
21
|
16
|
14
|
14
|
12
|
15
|
|
|
2025/05
|
55
|
55
|
48
|
36
|
39
|
33
|
37
|
49
|
39
|
29
|
27
|
42
|
41
|
42
|
32
|
21
|
21
|
26
|
27
|
24
|
22
|
31
|
28
|
26
|
24
|
37
|
40
|
34
|
15
|
24
|
37
|
|
2025/04
|
22
|
43
|
51
|
53
|
37
|
46
|
65
|
68
|
66
|
47
|
41
|
43
|
123
|
104
|
98
|
80
|
64
|
57
|
38
|
37
|
37
|
34
|
34
|
33
|
17
|
20
|
34
|
50
|
40
|
45
|
|
|
2025/03
|
108
|
37
|
30
|
24
|
14
|
17
|
23
|
33
|
39
|
44
|
59
|
72
|
61
|
25
|
54
|
15
|
42
|
56
|
46
|
50
|
53
|
52
|
63
|
77
|
72
|
51
|
29
|
50
|
34
|
14
|
12
|
|
2025/02
|
61
|
23
|
15
|
35
|
56
|
42
|
23
|
38
|
43
|
36
|
50
|
56
|
63
|
39
|
51
|
83
|
57
|
51
|
31
|
30
|
26
|
25
|
37
|
32
|
52
|
59
|
65
|
115
|
|||
|
2025/01
|
52
|
62
|
63
|
48
|
56
|
59
|
54
|
55
|
60
|
49
|
49
|
45
|
50
|
56
|
83
|
99
|
58
|
49
|
59
|
57
|
57
|
73
|
70
|
34
|
33
|
28
|
26
|
39
|
58
|
41
|
44
|
|
2024/12
|
52
|
59
|
58
|
45
|
41
|
39
|
49
|
39
|
44
|
32
|
43
|
34
|
31
|
53
|
54
|
53
|
56
|
53
|
56
|
47
|
46
|
67
|
53
|
44
|
42
|
50
|
61
|
87
|
66
|
62
|
72
|
|
2024/11
|
29
|
19
|
32
|
44
|
43
|
42
|
30
|
35
|
33
|
33
|
41
|
37
|
23
|
29
|
40
|
23
|
26
|
23
|
15
|
12
|
15
|
26
|
31
|
28
|
32
|
20
|
32
|
34
|
37
|
47
|
|
|
2024/10
|
22
|
21
|
29
|
26
|
26
|
37
|
30
|
21
|
30
|
36
|
45
|
40
|
36
|
35
|
29
|
28
|
29
|
46
|
45
|
25
|
23
|
37
|
34
|
34
|
40
|
40
|
48
|
26
|
28
|
53
|
39
|
|
2024/09
|
31
|
43
|
41
|
31
|
26
|
16
|
16
|
14
|
18
|
31
|
54
|
39
|
33
|
29
|
21
|
28
|
28
|
25
|
31
|
18
|
15
|
19
|
14
|
16
|
24
|
32
|
31
|
26
|
33
|
34
|
|
|
2024/08
|
27
|
31
|
31
|
40
|
40
|
36
|
33
|
41
|
40
|
33
|
34
|
36
|
37
|
29
|
28
|
24
|
13
|
20
|
14
|
13
|
16
|
29
|
25
|
27
|
51
|
41
|
46
|
41
|
39
|
26
|
21
|
|
2024/07
|
23
|
20
|
13
|
17
|
16
|
17
|
16
|
13
|
15
|
18
|
18
|
22
|
19
|
16
|
20
|
18
|
15
|
15
|
18
|
19
|
16
|
16
|
35
|
32
|
38
|
16
|
22
|
23
|
26
|
21
|
29
|
|
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