Air Quality
Excellent
No health implications.
32
PM2.5
33
PM10
72
O3
0.7
CO
10
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Dec
51
Good
Sat
21 Dec
43
Excellent
Sun
22 Dec
45
Excellent
Mon
23 Dec
48
Excellent
Tue
24 Dec
56
Good
Wed
25 Dec
74
Good
Thu
26 Dec
50
Excellent
Air quality in the last 12 months (Chenghai)
|
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
|
|
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
|
|
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