Air Quality
Excellent
No health implications.
6
PM2.5
13
PM10
52
O3
0.6
CO
7
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Apr
50
Excellent
Fri
1 May
67
Good
Sat
2 May
59
Good
Sun
3 May
55
Good
Mon
4 May
58
Good
Tue
5 May
47
Excellent
Wed
6 May
43
Excellent
Air quality in the last 12 months (Chenghai)
|
2026/03
|
20
|
55
|
33
|
38
|
35
|
29
|
46
|
36
|
37
|
36
|
44
|
52
|
43
|
44
|
41
|
40
|
37
|
46
|
49
|
34
|
37
|
41
|
41
|
40
|
52
|
37
|
38
|
32
|
39
|
48
|
42
|
|
2026/02
|
31
|
35
|
46
|
50
|
58
|
51
|
35
|
41
|
37
|
37
|
45
|
44
|
48
|
46
|
40
|
39
|
37
|
39
|
39
|
54
|
54
|
61
|
60
|
80
|
43
|
24
|
43
|
11
|
|||
|
2026/01
|
40
|
25
|
35
|
51
|
49
|
27
|
42
|
50
|
53
|
53
|
58
|
59
|
67
|
51
|
60
|
62
|
68
|
60
|
61
|
35
|
39
|
44
|
46
|
46
|
40
|
58
|
62
|
30
|
40
|
45
|
30
|
|
2025/12
|
32
|
45
|
44
|
48
|
42
|
40
|
49
|
51
|
49
|
41
|
52
|
47
|
44
|
32
|
45
|
52
|
60
|
54
|
62
|
52
|
82
|
40
|
41
|
46
|
30
|
29
|
36
|
43
|
43
|
53
|
41
|
|
2025/11
|
28
|
40
|
45
|
23
|
22
|
31
|
30
|
36
|
46
|
28
|
25
|
18
|
20
|
28
|
41
|
44
|
43
|
36
|
23
|
39
|
39
|
52
|
54
|
58
|
43
|
60
|
52
|
64
|
74
|
56
|
|
|
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
|
|
|
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