Air Quality
Excellent
No health implications.
3
PM2.5
10
PM10
30
O3
0.7
CO
3
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Jun
49
Excellent
Fri
19 Jun
49
Excellent
Sat
20 Jun
50
Excellent
Sun
21 Jun
53
Good
Mon
22 Jun
48
Excellent
Tue
23 Jun
53
Good
Wed
24 Jun
37
Excellent
Air quality in the last 12 months (Chenghai)
|
2026/05
|
37
|
43
|
42
|
25
|
31
|
39
|
39
|
47
|
38
|
40
|
54
|
66
|
41
|
20
|
24
|
29
|
35
|
34
|
35
|
30
|
23
|
33
|
33
|
32
|
27
|
27
|
30
|
36
|
37
|
52
|
56
|
|
2026/04
|
31
|
31
|
44
|
51
|
28
|
38
|
40
|
38
|
43
|
36
|
32
|
30
|
29
|
25
|
32
|
36
|
37
|
48
|
41
|
42
|
34
|
34
|
26
|
18
|
29
|
44
|
50
|
39
|
33
|
24
|
|
|
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
|
|
|
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