Air Quality
Excellent
No health implications.
11
PM2.5
26
PM10
67
O3
0.6
CO
10
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
31 Oct
60
Good
Fri
1 Nov
51
Good
Sat
2 Nov
48
Excellent
Sun
3 Nov
49
Excellent
Mon
4 Nov
46
Excellent
Tue
5 Nov
45
Excellent
Wed
6 Nov
45
Excellent
Air quality in the last 12 months (Chenghai)
|
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
|
|
2024/06
|
20
|
13
|
23
|
27
|
23
|
34
|
19
|
21
|
25
|
23
|
18
|
24
|
23
|
25
|
29
|
19
|
19
|
17
|
17
|
16
|
22
|
23
|
22
|
16
|
16
|
17
|
20
|
19
|
25
|
43
|
|
|
2024/05
|
33
|
20
|
24
|
30
|
27
|
40
|
40
|
44
|
44
|
32
|
39
|
44
|
30
|
33
|
35
|
53
|
36
|
46
|
36
|
21
|
17
|
14
|
17
|
16
|
19
|
24
|
22
|
26
|
31
|
25
|
34
|
|
2024/04
|
27
|
43
|
35
|
42
|
29
|
22
|
17
|
39
|
21
|
40
|
44
|
52
|
50
|
36
|
48
|
52
|
37
|
27
|
40
|
47
|
27
|
39
|
32
|
28
|
26
|
23
|
20
|
19
|
28
|
22
|
|
|
2024/03
|
16
|
20
|
37
|
45
|
91
|
52
|
27
|
61
|
59
|
52
|
51
|
36
|
66
|
74
|
92
|
87
|
100
|
55
|
59
|
58
|
58
|
54
|
59
|
40
|
37
|
39
|
38
|
53
|
54
|
58
|
33
|
|
2024/02
|
58
|
36
|
33
|
37
|
37
|
29
|
25
|
10
|
25
|
73
|
69
|
55
|
61
|
80
|
59
|
44
|
34
|
44
|
38
|
33
|
21
|
23
|
22
|
40
|
47
|
45
|
39
|
36
|
61
|
||
|
2024/01
|
70
|
64
|
54
|
38
|
57
|
70
|
71
|
66
|
59
|
46
|
73
|
82
|
62
|
44
|
64
|
42
|
35
|
50
|
63
|
47
|
26
|
27
|
16
|
31
|
45
|
64
|
74
|
71
|
86
|
67
|
65
|
|
2023/12
|
38
|
46
|
42
|
38
|
35
|
35
|
35
|
47
|
62
|
63
|
64
|
43
|
28
|
43
|
60
|
23
|
24
|
33
|
35
|
19
|
22
|
45
|
39
|
37
|
44
|
58
|
74
|
63
|
46
|
68
|
83
|
|
2023/11
|
34
|
31
|
40
|
48
|
54
|
54
|
43
|
43
|
47
|
51
|
25
|
24
|
26
|
33
|
35
|
34
|
56
|
59
|
59
|
47
|
43
|
42
|
54
|
70
|
46
|
38
|
56
|
62
|
53
|
53
|
|
|
2023/10
|
37
|
38
|
48
|
55
|
35
|
23
|
19
|
22
|
25
|
28
|
35
|
40
|
37
|
34
|
45
|
51
|
51
|
49
|
53
|
40
|
25
|
29
|
33
|
32
|
36
|
31
|
31
|
32
|
38
|
39
|
35
|
|
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