Air Quality
Excellent
No health implications.
12
PM2.5
21
PM10
51
O3
0.7
CO
6
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
29 Oct
62
Good
Thu
30 Oct
59
Good
Fri
31 Oct
56
Good
Sat
1 Nov
54
Good
Sun
2 Nov
55
Good
Mon
3 Nov
33
Excellent
Tue
4 Nov
29
Excellent
Chenghai Air quality rank
Air quality in the last 12 months (Chenghai)
|
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
|
|
2025/07
|
17
|
21
|
22
|
29
|
15
|
19
|
40
|
40
|
32
|
16
|
12
|
34
|
38
|
36
|
33
|
39
|
37
|
29
|
24
|
24
|
22
|
15
|
25
|
35
|
26
|
28
|
38
|
32
|
27
|
34
|
27
|
|
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
|
|
|
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