Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
32
O3
0.6
CO
5
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Nov
50
Excellent
Fri
14 Nov
54
Good
Sat
15 Nov
54
Good
Sun
16 Nov
51
Good
Mon
17 Nov
48
Excellent
Tue
18 Nov
15
Excellent
Wed
19 Nov
22
Excellent
Air quality in the last 12 months (Chenghai)
|
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
|
|
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
|
|
|
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