Air Quality
Excellent
No health implications.
7
PM2.5
15
PM10
16
O3
0.8
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
26 Sep
32
Excellent
Sun
27 Sep
24
Excellent
Mon
28 Sep
26
Excellent
Tue
29 Sep
26
Excellent
Wed
30 Sep
28
Excellent
Thu
1 Oct
31
Excellent
Fri
2 Oct
44
Excellent
Air quality in the last 12 months (Chengkou)
|
2026/08
|
19
|
15
|
13
|
11
|
15
|
20
|
25
|
27
|
31
|
28
|
25
|
27
|
25
|
22
|
24
|
26
|
34
|
31
|
26
|
26
|
27
|
27
|
25
|
24
|
20
|
21
|
24
|
26
|
20
|
30
|
33
|
|
2026/07
|
35
|
24
|
27
|
26
|
26
|
25
|
27
|
30
|
26
|
22
|
21
|
19
|
22
|
23
|
24
|
25
|
20
|
27
|
47
|
38
|
40
|
39
|
35
|
31
|
31
|
26
|
22
|
19
|
20
|
19
|
20
|
|
2026/06
|
41
|
46
|
43
|
47
|
44
|
38
|
25
|
21
|
26
|
31
|
31
|
26
|
27
|
33
|
34
|
31
|
31
|
20
|
21
|
24
|
23
|
18
|
18
|
22
|
25
|
24
|
29
|
26
|
26
|
24
|
|
|
2026/05
|
48
|
28
|
33
|
37
|
40
|
39
|
30
|
39
|
34
|
38
|
55
|
73
|
40
|
36
|
34
|
29
|
20
|
21
|
17
|
25
|
37
|
28
|
28
|
27
|
16
|
22
|
23
|
21
|
23
|
25
|
32
|
|
2026/04
|
33
|
40
|
43
|
66
|
67
|
62
|
55
|
41
|
31
|
40
|
36
|
30
|
29
|
24
|
24
|
30
|
44
|
50
|
61
|
85
|
50
|
20
|
27
|
32
|
43
|
55
|
49
|
28
|
34
|
42
|
|
|
2026/03
|
16
|
19
|
25
|
38
|
42
|
43
|
37
|
25
|
27
|
31
|
35
|
77
|
84
|
49
|
18
|
18
|
21
|
25
|
46
|
46
|
49
|
50
|
50
|
28
|
28
|
37
|
42
|
40
|
38
|
24
|
27
|
|
2026/02
|
60
|
63
|
69
|
79
|
82
|
81
|
98
|
73
|
54
|
55
|
57
|
58
|
73
|
72
|
64
|
35
|
73
|
58
|
57
|
57
|
57
|
71
|
73
|
46
|
43
|
29
|
26
|
16
|
|||
|
2026/01
|
24
|
41
|
56
|
66
|
61
|
59
|
62
|
70
|
82
|
81
|
85
|
102
|
113
|
104
|
111
|
91
|
110
|
121
|
58
|
36
|
48
|
50
|
57
|
65
|
77
|
72
|
64
|
62
|
52
|
29
|
43
|
|
2025/12
|
84
|
99
|
74
|
68
|
65
|
65
|
75
|
75
|
81
|
98
|
97
|
125
|
43
|
53
|
60
|
64
|
80
|
84
|
97
|
86
|
31
|
56
|
39
|
49
|
52
|
57
|
64
|
77
|
88
|
104
|
65
|
|
2025/11
|
38
|
42
|
50
|
54
|
51
|
39
|
16
|
21
|
27
|
48
|
46
|
44
|
49
|
49
|
53
|
49
|
20
|
19
|
29
|
40
|
45
|
60
|
52
|
45
|
43
|
54
|
70
|
70
|
68
|
80
|
|
|
2025/10
|
15
|
12
|
14
|
12
|
16
|
21
|
23
|
20
|
30
|
28
|
31
|
26
|
12
|
17
|
14
|
19
|
14
|
16
|
17
|
12
|
10
|
23
|
29
|
48
|
34
|
27
|
32
|
38
|
41
|
32
|
34
|
|
2025/09
|
24
|
27
|
23
|
24
|
24
|
15
|
17
|
17
|
16
|
23
|
18
|
13
|
15
|
20
|
29
|
26
|
20
|
15
|
11
|
13
|
16
|
16
|
13
|
13
|
24
|
17
|
16
|
19
|
11
|
12
|
|
|
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